Dibothriocephalus parvus, how distinguished from D. latus and D. cordatus, 316
— — morphology, 316
— plerocercoid of, 300
— synonyms, 309
Dicrocœiidæ, morphology, 232, 265
Dicrocœlium dendriticum, intermediate host unknown, 267
— — morphology, 266
— — organs of, diagram showing, 265
— — ova and miracidia, 266
— — synonyms, 266
— lanceolatum, incidental human parasite, 7
Diesing, first record of case of Metastrongylus apri in man, 433
Difämus tunensis, cause of diarrhœa, 57
— — characters, 57
Difflugia enchelys, 47
Digenea, morphology, 230
Digestive system, loss of, in parasites, 3
Dinoflagellata, 52
Dioctophyme, 431
— gigas, hosts and habitat in body, 431
— — in man, source of, 431
— — infection by, 431
— — morphology, 431
— — ova of, 432
— — synonyms, 431
Dioctophymidæ, 431
— characters, 375
Dionis de Carrières, liver-fluke in right hypochondriac region, 244
Diphyllobothrium (Bothriocephalus) ditremum, discovery of progeny of, 13
Diplodiscus subclavatus, hosts of, 6
Diplogonoporus, morphology, 316
— grandis, egg of, 298
— — morphology, 316
— — ventral view of genitalia of left side, 317
— — — — of portion of strobila, 317
Diptera, bibliography, 612
— biting-mouthed and other noxious carriers of disease, 600
— characters, 531, 532
— digestive tract of, inhabited by Herpetomonads, 102
— larvæ of, in man, references to, 599
Dipylidiidæ, 309, 320
Dipylidium, morphology, 320
— synonyms, 320
— caninum, 320
— — confused with Tænia solium, 660
— — cysticercoids of, 322
— — — hosts of, 322
— — dogs and cats infected with, through skin parasites, 323
— — embryo of, development, 321
— — expulsion of, drugs suitable for, 660
— — hosts of, 6, 7, 322
— — invasion by, effect on central nervous system, 649
— — morphology, 320
— — oncosphere of, 299
— — oncospheres of, animals selected as hosts for development, 299
Dipylidium caninum, prevalence of infection by, in children, 659, 660
— — proglottids of, 322
— — proglottis of, central portion, 321
— — region of human body inhabited by, 660
— — rostellum of, 289
Dirksen, effect on anæmia of expulsion of Tænia solium, 648
Dirofilaria immitis, 417
— magalhaesi, morphology, 417
— morphology, 416
— repens, 417
Discophora, see Hirudinea
Disporea in Myxosporidia, 182, 184
Distoma, opercula of ova of, discovery, 12
— echinatum, redia of, in later stage, 227
Distomata, morphology, 231
— cercariæ, 753
Distomum ophthalmobium, 244
Doeveren, van, on transmission of intestinal worms, 11
Doflein, Coccidiomorpha, 129, 151
— Cnidosporidia, 129, 194
— Entamœba kartulisi, 44
— Trypanosoma equiperdum, 97
Dog and cat, parasites common to, 6
— blood of, life-cycle of Babesia (Piroplasma) canis in, 175
— Dipylidium caninum parasite in, 322
— fleas, natural flagellates in, 111, 112
— — transmission of canine kala-azar by, 103
— — see also Ctenocephalus canis and Pulex serraticeps
— host of Dibothriocephalus latus, 313, 315
— — of Paragonimus kellicotti, 250
— intestine of, Isospora bigemina parasitic in, 149
— mange, transmission to man, 523
— rearing of Tænia echinococcus in, 356
— to dog, transmission of leucocytogregarine from, by tick, 155
— transmission of infection with Demodex folliculorum canis to man, 709
Dogs, contraction of surra by, 96
— dermal infection with larvæ of Ancylostomum duodenale, 455
— echinococci in, 346
— experiments with, to prove transmission of infantile kala-azar by fleas, 111
---- infected with Dipylidium caninum through skin parasites, 323
— infection with infantile leishmaniasis, 110
— — — — experimental, 110
— — — — natural, 110
— Leishmania tropica in, 108
— malignant jaundice in, carrier of, 493
— — — cause of, 177
— nagana fatal to, 94
— percentage infected with Tænia echinococcus in various cities and countries (footnote), 345
— prevention of echinococcus infection by, 346
— segregation of, as preventive against Oriental sore, 628
— skin diseases in, due to young nematodes, 378
Doliocystidæ, 135
Domestic animals, species of Sarcoptes transmissible from, to man, 520
— — trypanosomes deleterious or lethal to, 69, 70
Dormouse, inoculation of Trypanosoma lewisi into, 90
Dornblüth, method of evacuation of Oxyuridæ, 697
Dörr, tapeworm drug recommended by, 674
Dourine, anæmia and paralysis in, 97
— periods or stages of, 97
— trypanosome causing, 97
Dovecots, habitat of Argas reflexus, 506
Dracontiasis, disorder named by Galen, 386
Dracunculidæ, 385
— characters, 374
Dracunculus medinensis (Guinea worm), anterior extremity, 387
— — expulsion by extraction, 676
— — — methods and drugs for, 676
— — female, transverse section of, 388
— — infection by, prophylaxis against, 676
— — — symptoms and lesions following, 389
— — intermediate host, 388
— — larvæ of, 388
— — life-history, 386, 388
— — methods of extraction from body, 389
— — morphology, 386
— — period of development in man, 389
— — regions of body inhabited by, 386
— — synonyms, 386
— — viviparous nematode, 371
— morphology, 385
Dromedaries, “mbori” in, 96
Drone fly, 583, 584
Drosophila melanogaster, larvæ of, characters and habitat, 584
— — — effects produced by ingestion of, 584
Drosophilidæ, characters and habitat, 584
Drouillard, favourable effects of expulsion of Ascaridæ, 649
Drugs, reaction of spirochætes to, 115
Dubini, Filaria (?) conjunctivæ in man, 405
Dubreuilh, infection with Demodex folliculorum, 708
Ducks, destruction of mosquito larvæ by, 636
— how infected by Echinostoma echinatum, 226
Dufour, creation of name Gregarina by, 129
Duguet, maculæ cæruleæ (tâches bleues) due to infection by crab louse, 712
Dujardin, development of Tæniæ, 14
— psorosperms, 181
Duke, anterior station of trypanosomes in Glossinæ, 101
— Trypanosoma gambiense in antelope, 76
Dum-dum fever, 105
Dumesnil, larvæ of Muscidæ in nose, 720
Duodenum, flagellate stage of Lamblia intestinalis found in, 59
— human, habitat of Ancylostoma duodenale, 450
— possible invasion by Balantidium minutum, 204
— species of Trichostrongylus inhabiting, 435, 436
Durham, specimens of Leptus (bête rouge), 486
Dutton, Trypanosoma gambiense, 68
— and Todd, herpetomonads in mice, 738
— — researches on Spirochæta duttoni, 116, 117
Duval, liver-flukes in veins, 243
Dysentery, amœba as causal agent, 30, 34
— — — — experiments made to prove, 30, 40, 618
— amœbic, acute, symptoms, 618
— — carriers, 618
— — chronic, 618
— — experimental production, 618
— — gangrenous, treatment, 619
— — incubation period long, 618
— — latent, 618
— — — leading to liver abscess, 618
— — preventive measures, 620
— — relief of griping and straining, 618, 619
— — treatment by emetine hydrochloride,618, 619
— — — by ipecacuanha, 619
— — — by preliminary administration of castor oil, 619
— — — of liver abscess, 620
— — — surgical, 619
— association of Lamblia intestinalis with, 59, 625
— — of Noc’s entamœba with, 41
— — of Trichomonas with, 56, 624
— bacillary, 31
— — Entamœba coli present in cases of, 38
— bacillus, discovery of, 31
— balantidian or ciliate, 201, 202, 637
— — — prophylaxis, 637
— — — symptoms, 637
— — — treatment, 637
— discoveries of Cholera Investigation Commission with regard to, 30
— discovery of intestinal amœbæ in cases of, 30
— flagellate, 623
— — diet in, 625
— — geographical distribution, 624
— — prognosis, 625
— — prophylaxis, 625
— — protection of food supply against fæcal contamination in, 625
— — treatment, 624, 625
— followed by recovery from oxyuriasis, 698
— production by injection of amœbæ into cats, 35
— red, geographical distribution, 147, 741
— — in cattle, cause of, 147
— so-called, due to mites, 512
— spread by house-fly, 586
— treatment by bismuth subnitrate, 619
Dysodius lunatus, bite of, 541

E.
Ear, abscess of, liver-fluke in, 244
— parasites in, 615
— — see also Myiasis, auricular
Ears of hosts infested by Ornithodorus mégnini rendered painful, 510
Earth-eating in connection with Trichuris trichiura infection, 679
East Coast fever in cattle, cause of, 178, 179
— — — — pathogenic agent, 174
Eau de Cologne, application in nasal myiasis, 719
Echidnophaga, 543
Echinococcus, brood capsules, 349
— — — and scolices, mode of formation, 348, 349
— — — transformation into daughter cysts, 351, 353
— cysticus fertilis, 350
— cysts causing urticaria, 651
— daughter cysts, 350
— definition of, 301
— fluid, chemistry of, 353
— frequency of infection by, of various organs in slaughtered animals, 347
— hominis in liver, incised fibrous capsule and wall showing daughter cysts, 351
— in dogs, oxen, sheep and pigs, 346
— in man, age incidence, 355
— — death at various stages of development, 356
— — geographical distribution, 354, 355
— — organs of body invaded by, 355
— — percentage of prevalence in Central Europe, 354
— — secondary, 356
— — sex incidence, 355
— infection, prevention of spread by dogs, 346
— multilocularis (alveolar colloid), development, 357, 358
— — — — feeding experiments with Tænia from, 358
— — — — hooklets of, 359
— — — — in liver of ox, 357
— — — — in man, early disintegration, 357
— — — — — geographical distribution, 358
— — — — — invasion, results of, 358
— — — — — — site of, 358
— — — — morphology of, 356
— — — — reasons for distinction from hydatid or unilocular, 357, 358
— of liver rupturing into abdominal cavity, 652
— rate of growth, 354
— rich in glycogen, 348
— scolex, 349
— — development in rabbits, 353
Echinococcus scolex in process of vesicular metamorphosis, section through, 351
— — invaginated, section through, 350
— — transformation into daughter cyst, 352
— scolices in, 303, 349
— serum diagnosis of, 359
— structure and development, 347
— veterinorum, 350
— — brood capsules and scolices, 350
— — hooklets of, 355
Echinorhynchus, anatomy, 475
— excretory organs, 475, 476
— “floating ovaries” of, 150
— gigas, hosts of, 477
— — incidental human parasite, 7
— — intermediate hosts, 477
— — morphology, 477
— hominis, 478
— moniliformis, hosts, habitat and intermediate host of, 478
— nervous system, 475
— ova of, 477
— protrusor proboscidis, 475
— receptaculum proboscidis, 475
— retractor proboscidis, 475
— — receptaculi, 475
— sexual organs, 476
Echinostoma, cercariæ of, 225
— echinatum, method of infection of ducks and geese by, 226
— ilocanum, habitat, 268
— — morphology, 267
— — organs of, diagram showing, 268
— malayanum, habitat, 269
— — morphology, 268, 269
— morphology, 267
Echinostomidæ, 267
— morphology, 233
Echinostominæ, 267
— morphology, 233
Ectoparasites, 1
— permanent, changes in, 3
Ectoplasm of protozoa, 25, 26
— — substances deposited in, 26
Ectoschiza, 135
Eczema due to head louse infection, 709, 710
— following infection by crab louse, 712
— occupational, diagnosis from scabies, 706
— peri-anal and perineal, set up by migrations of Oxyuris vermicularis, 695
— purulent, following infection by ancylostomes, 684
— resulting from clothes louse infection, 711
— set up by infection with Dermanyssus gallinæ, 703
— — by Leptus autumnalis, 702
Ehrenberg, Spirochæta plicatilis, 114
Ehrlich’s acid hæmatoxylin, 751
Eimer, researches on coccidia, 136
Eimeria, 142
— avium, causal agent of white diarrhœa or white scour in fowls, and blackhead in turkeys, 145
— — cause of fatal epizootics among game birds and poultry, 142
Eimeria avium, infection by, method of, 145
— — life-cycle of, 142–145
— — — period, 144, 145
— — — phases, 142–144
— — merozoites of, 143
— — microgametes and macrogametes of, 143, 144
— — relation to E. stiedæ, 145
— — sporozoites of, 143
— — trophozoites of, 143
— falciformis, 136
— (Coccidium) schubergi, life-cycle of, 138–141
— hominis, 150
— — bodies described as, 150
— stiedæ, ascribed cause of “red dysentery” in cattle, 147
— — host of, 7, 145
— — oöcysts of, 142, 146
— — parasitic in rabbit and occasionally in man, 145, 148
— — schizogony, 147
— — — — effects, 147
— — synonyms, 145
— — see also Coccidiosis
— synonyms, 142
Eimeridea, 141, 742
Electrolytic needle, application in creeping disease, 731
Elephantiasis arabum from Filaria bancrofti infection, sites of body affected by, 677
— — — — — symptoms, 677
— — — — — treatment, 677
— scroti in filariasis, 402
Ellermann, rhizopods in poliomyelitis acuta, 46
Elmassian, discovery of Entamœba minuta, 42
— — of trypanosomes in “mal de caderas,” 68
Embryophore of tapeworms, 298
Emetine and vaccine treatment combined in pyorrhœa alveolaris, 620
— hydrochloride in flagellate dysentery, 625
— — in treatment of amœbic dysentery, 618, 619
— in oral endamœbiasis, 620
Emily, expulsion of guinea worm, 676
— method of extraction of Dracunculus medinensis, 389
Endamœba, 31, 34, 734
— see also Entamœba
Endamœbiasis, oral, 620
— — treatment, 620
Endermol, application in scabies, 707
Endoparasites, 1
— intermediate generations invading intermediate hosts, 5
— — hosts of, 5
— young of, leaving host or organ of host inhabited by parents, 5
Endophlebitis set up by Schistosoma hæmatobium, 274, 275
Endoplasm of protozoa, 25, 26
— — substances deposited in, 26
Endoschiza, 135
Endotoxins in Trypanosoma equiperdum, 98
Endotrypanum schaudinni, 99
Enemata, in evacuation of Oxyuridæ, 697
Entamœba, 31, 734
— africana, see under Entamœba tetragena
— buccalis, 43, 734
— — association with cancer of oral cavity, 43
— — — with dental caries, 43
— — — with pyorrhœa alveolaris, 43, 734
— — characters, 43
— — possible relation of E. pulmonalis to, 40
— bütschlii, 34
— coli, 32, 618, 733
— — characters, 33
— — cysts of, 33
— — — in normal fæces, 33
— — encystment process, 33
— — — — cytological changes during, 33
— — how distinguished from E. histolytica, 34, 40, 733
— — life-cycle of, 32, 33
— — non-pathogenic and non-culturable, 618
— — parasite of human intestine, 618
— — may be present in bacillary dysentery, 38
— — schizogony of, 32, 33
— — so-called autogamy of, 34
— — sporogony of, 32, 33
— gingivalis, 733
— — synonyms, 734
— hartmanni, 34
— histolytica,