- Fig. 1 a, Balanus glandula, scutum, internal; 1 b, tergum, external.
- 2 a, Balanus balanoides; 2 b, portion of basal edge of parietes of a compartment; 2 c, tergum; 2 d, tergum, var.
- 3 a, Balanus cariosus; 3 b, portion of basal edge of parietes of a compartment; 3 c, scutum, internal view of; 3 d, tergum, internal; 3 e, tergum, external view.
- 4 a, Balanus declivis, lateral view, with basal membrane removed; 4 b, rostrum (to left hand), two lateral compartments, and carina; 4 c and 4 d, scutum and tergum, external views.
- 5 a, Balanus Hameri; 5 b, scutum, internal view; 5 c, tergum, external view.
- 6 a, Balanus amaryllis; 6 b, scutum, internal; 6 c, tergum, external view.
- 7 a, Balanus allium; 7 b and 7 c, scutum, external and internal views; 7 d, tergum, external.
- 8 a, Balanus cepa, scutum, internal; 8 b, scutum, external;
8 c, tergum, external view.