48 NTJDIBRANCHIATE GASTEROPODA. 



Coryphella sp. (anonyma). 

 Fig. 20. A piece of the radula, lateral view, a median teeth, bb lateral teeth, x 350 diam. 



Galvina sp. (anonyma). 



Fig. 21. A piece of the masticatory edge of the mandible. 



— 22. A piece of the radnla, from above, a median teeth, b lateral teeth. 



— 23. A median tooth, from above. 



— 24. Two median teeth, from the under side. 



- 25. A piece of the radnla, lateral view; a and b as in fig. 22. 

 Figs. 21 — 25 drawn with cam. Inc. x 350 diam. 



PI. V. 

 Gonieolis atypica, Bgh. 



Fig. 1. The efferent dncts of the genital system, viewed from the inside of the anterior genital mass. 



* the hinder edge of the anterior genital mass; a the dnct of the hermaphrodite gland, 



b ampulla of the same; c the prostatic part, and d the mnscnlons part of the seminal duct; 



e the inner part, and f the outer part of the penis (with glans); g the seminal vesicle, and 



// its duct. 



Coryphella salmonacea (Couth.). 



Fig. 2. A piece of the masticatory edge of the mandible, a the free edge, x 350 diam. 



3. A piece of the radnla, lateral view, aa median teeth, bb lateral teeth, x 200 diam. 



— 4. A lateral tooth, x 350 diam. 



5. A piece of the salivary gland (Gl. saliv.). 



— 6. A piece of the gland of the oral tube (Gl. ptyalina). 



Figs. 5 and 6 drawn with cam. Inc. x 100 diam. 



— 7. a seminal duct, b penis bag. 



— 8. a seminal duct, b glans penis. 



Coryphella salmonacea (Couth.), var. 

 Fig. 9. Lateral tooth-plate, from abowe. 

 ■ 10. Median tooth-plate, lateral view. 



Fig. 9 — 10 drawn with cam. Inc. x 350 diam. 



Coryphella sp. 



Fig. 11. A piece of the masticatory edge of the mandible, a the hinder end. 



— 12. A piece of the radnla, lateral view, aa median teeth, bb lateral teeth. 



— 13. A median tooth, from the under side. 



