(120 



Plate II. 

 Aplysia gaugantua, B. 



FIG 



1. a, (Esophagus ; b, first stomach ; c, masticatory stomach ; d, third 



stomach ; c, intestine. 



Aplysia mokocuuoa, U. 



2. The shell from beneath. 2/1. 



3. The penis with a, the prostata {'.'). 

 i. IMcdian plates. 



5. First lateral plate. 



6. Outer end of a series, a, outermost plate. 



7. Outer end of two series, aa, outermost plate. 



(Figs. 4-7 drawn by Cam. 200 x .) 



Aplysia louata, 13. 



8. The shell, from beneath. 2/1. 



9. Elements of the mandible. 



10. Median and first lateral plate. 



11. Outer end of a series, a, outermost plate. 



(Figs. 10-12 drawn by Cam. 200 x .) 



12. The penis. 



Aplysia Woodii, B 



13. The hinder end of the sole of the foot. 



14. The shell from beneath. 3/1. 



15. Elements of mandible. 

 IG. INIedian plate. 



17. A lateral plate. 



18. The ninth plate from the outer end of a series. 



19. Outer end of a series, a, outermost plate. 



(Figs. 15-19 drawn by Cam. 350 x .) 



x\PLYSIA POIKILIA, B. 



20. Elements of mandible. 



21. Hooks of the palate. 



(Figs. 20-21 drawn by Cam. 350 X .) 



