88 ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. 



Fig. 63 — 64- Acanthias vulgaris $. 



Fig. 63: Ventral fin from the ventral side; natural size. 

 — 64: The same from the dorsal side; most of the muscles arising from the bod}- removed. 



Plate VI. 



The figures, except fig. 67 — 68, represent the right ventral fin. 



Fig. 65 — 66. Scylliiim stellare. 



Fig. 65: The ventral fin from the ventral side; somewhat reduced; the greater part of the glandular 

 bag .S' removed; n^, a^ special muscles of the appendix; / the winglike process. 



— 66: The same, from the dorsal side; q/ the basal opening of the appendix-slit. 



Fig. 67 — 68. Rajci clauata. 



Fig. 67: The left ventral fin, from the dorsal side; considerably reduced; the terminal parts covered 

 by the aponeurosis. 



— 68: The same, from the ventral side. 



Fig. 69 — 71. Chimcera monstrosa. 



Fig. 69: The right ventral fin, from the ventral side; a little reduced; the skin on the branches 

 of the terminal j^art not removed; b* the medial terminal branch, (^** the dorsal one, d*** 

 the lateral one; / the .serrated plate» covered with its skin. 



— 70: The same, from the dorsal side; m the muscle of the v.serrated plate »; x process on the 



piece 6j. 



— 71: Part of the same, from the ventral side; the ventral portion of the J/nsc. addiictor ^ A in 



fig. 70, removed. 



