PLATE III. 
Figs. 1-12. Platydoris eurychlamys, Bergh. 
Fig. 1. a, Buccal ganglia ; b, b, gastro-cesophageal ganglia. Cam. luc. x 55 cliam. 
Fig. 2. a, Proximal ; b, distal, olfactory, ganglion. Cam. luc. x 55 diam. 
Fig. 3. a, (Esophagus ; b, stomach ; cc, intestine ; d, bile-duct ; from beneath. 
Fig. 4. a, Cleft at anterior end of duct of renal syrinx (5). 
Fig. 5. Arborescent outgrowths of duct of renal syrinx. Cam. luc. x 100 diam. 
Fig. 6. Two large lateral teeth, from the side. Cam. luc. x 350 diam. 
Fig. 7. One of the smaller disks of the prseputium, from above. Cam. luc. x 350 diam. 
Fig. 8. Hooks of two of the larger disks, from the side. Cam. luc. x 350 diam. 
Fig. 9. Lower part of praeputium. Cam. luc. x 100 diam. 
Fig. 10. Villi from the surface of the ventricle of the heart (pathological). Cam. luc. x 100 diam. 
Fig. 11. a, Posterior; b, anterior part of the salivary gland. 
Fig. 12. a, Hermaphrodite duct ; b, its ampulla ; c, constricted part of the same ; d, female branch ; 
c, male branch ; /, prostate ; g, thinner part of the vas deferens ; h, thicker part ; ii, penis ; 
k, vestibular gland. 
Fig. 13. Discodoris morphcea, Bergh. 
Fig. 13. a, Ampulla of the hermaphrodite duct; b, female branch ; c, male branch ; d, prostate ; e, vas 
deferens ; f, penis. 
Figs. 14-20. Ceratosoma cornigerum, Adams. 
Fig. 14. Otocyst on the surface of cerebral ganglion (a). Cam. luc. x 350 diam. 
Fig. 15. Spicules from capsule of cerebral ganglion. Cam. luc. x 350 diam. 
Fig. 16. Hooks of the labial disk. Cam. luc. x 750 diam. 
Fig. 17. Part of the rhachis of the radula ; a, median rhachidian thickening of cuticle ; b, b, inner- 
most lateral teeth (from the inner side). Cam. luc. x 750 diam. 
Fig. 18. Lateral tooth, from behind. Cam. luc. x 750 diam. 
Fig. 19. Two lateral teeth from the middle of a series, from the side. Cam. luc. x 750 diam. 
Fig. 20. Part of the rhachis; act, b, b, as in fig. 17. Cam. luc. x 350 diam. 
Figs. 21-25. Tliordisa (?) clandestina, Bergh. 
Fis. 21. Part of the rhachis of the radula, with the innermost teeth of two series. Cam. luc. X 350 diam. 
O 7 
Fig. 22. Outermost portion of three series of teeth with 3-5 teeth ; a, of the fourth ; b, of the sixth 
complete row of the tongue. Cam. luc. x 350 diam. 
Fis. 23. Innermost teeth of two series, from the side. Cam. luc. x 750 diam. 
Fig. 24. A lateral tooth, from the side. Cam. luc. x 750 diam. 
Fig. 25. Outermost portion of two series of teeth, with 5 and 7 teeth ; a, a, outermost teeth. Cam. luc. 
X 750 diam. 
Figs. 26-29. Chromodoris stricitella, Bergh. 
Fig. 26. Elements of the labial plate. Cam. luc. x 750 diam. 
Fig. 27. Ilhachis of the radula; a, median “pseudotooth”; 6, b, first lateral ; c, sixth lateral tooth (of 
left side). Cam. luc. x 750 diam. 
Fig. 28. Second lateral tooth, viewed obliquely from inside. Cam. luc. x 750 diam. 
Fig. 29. Outer portion of a series with seven plates ; a, outermost tooth. Cam. luc. x 750 diam. 
Fig. 30. Euplocamus japonicus, Bergh. 
Fig. 30. Spicules of the skin. Cam. luc. x 200 diam. 
