- Fig. 1, Balanus quadrivittatus.
- 2 a, Balanus terebratus, part of basis seen from the outside; 2 b, the same, seen from within.
- 3 a, Balanus vestitus, scutum, internal view; 3 b, tergum, external view.
- 4 a, Balanus imperator, scutum, internal view; 4 b, tergum, external view; 4 c, portion of basal edge of wall of the shell.
- 5 a, Balanus flosculus.
- 5 b,””var. sordidus.
- 5 c,””scutum, internal view.
- 5 d,””””var.
- 5 e and 5 f,”tergum, internal and external views of.
- 6 a, Balanus bisulcatus, scutum, external view; 6 b, tergum, external view; 6 c, scutum, internal view.
- 7, Balanus dolosus, tergum, external view.
- 8 a, Balanus unguiformis, scutum, internal view; 8 b, tergum, do.
- 9, Balanus varians, tergum, external view.
- 10 a, Balanus inclusus.
- 10 b,””var. that has been attached to a branch of a coralline.
- 10 c,”””seen from beneath, showing the narrow furrowed basis and wide lateral compartments; the other four
compartments, namely, the two carino-lateral, the carina, and rostrum, being of very small size.