TUNICATA. 



345 



PLATE III. 



Figs. 1, 2, 3 and 4. Rhabdocynthia ceylonica, n. sp. 



Nat. size. 

 Figs. 5 and 6. Test removed from right and left 



sides. 

 Fig. 7. The branchial sac. x 40. 

 Figs. 8 and 9. Dorsal tubercles, x 40. 

 Fig. 10. Tentacles, face view, x 40. 



,, 11. Tentacle, in profile, x 40. 

 Figs. 12, 13, 14 and 15. The echinated calcareous 



spicules. 

 Fig. 16. The dorsal tubercle and tentacles, x 40. 

 ,, 17. The dorsal languets. x 40. 

 18. White pigment flecks down the inside of 



each branchial lobe (alive). 

 ,, 19. The same white pigmentation after preser- 

 vation in formol. 

 20. Cynthia trcmsversaria, var. manaarends, n. 

 Nat. size. 



languets, tentacles. 



Fig. 21. With test removed 

 ,, 22. Dorsal tubercle, 

 x40. 



The stigmata, x 40. 



Part of the branchial sac. x 40. 



Cynthia crinitistellata, Hrdn. Nat. size 



One of the stellate hairs, enlarged. 



A group of hairs, enlarged. 

 Figs. 28 and 29. An echinated spine, x 40. 

 Figs. 30 and 31. Cynthia mipuensis, n. sp. 

 size. 



Part of branchial sac. x 40. 



Lining of branchial siphon, x 40. 



Three of the spines enlarged, x 200. 



Test removed. Nat. size. 



The tentacles, x 40. 



The dorsal languets. x 40. 



23. 

 24. 

 25. 

 26. 

 27. 



Fig. 32. 

 33. 

 34. 



35. 



36. 

 37. 



Nat. 



Figs. 38 and 39. Two dorsal tubercles, x 40. 



PLATE IV. 



Fig. 1. Cynthia lanka, n. sp., left side. Nat. Fig. 20, 

 size. 

 ,, 2. Another, with a Bhodosoma ceylonicum (Bh.) 



adhering. 

 3. Another, with a more marked ridge con- 

 taining the apertures. 

 ,, 4. Anterior end showing the ridge with the 



apertures. 

 5. Test removed, left side. 

 6. Test removed, right side. 

 Figs. 7, 8, and 9. The dorsal tubercle of different 

 individuals, x 40. 

 Three of the dorsal languets. x 40. 

 Part of the branchial sac. x 40. 

 The spicules lining the branchial siphon 

 ( x 40), two shown enlarged with the 

 bases in situ. 

 Part of the gonad, enlarged. ,, 36. 



Molgula taprobane, n. sp. Nat. size. 

 Figs. 15 and 16. The same from right and left sides, 37. 

 test removed. Nat. size. ,, 38. 



Fig. 17. Part of the branchial sac and dorsal 39. 

 lamina, x 40. Figs. 40 



18. Specimen from Trincomalee. Nat. size. 43 



,, 19. The dorsal tubercle, x 40. 



2 Y 



Ctenicella ridge icai/l, n. sp., test removed, 



left side, x 2 J. 

 The dorsal tubercle, x 40. 

 The branchial siphon, x 10. 

 Part of the branchial sac. x 40. 

 Styela areolata, Hellek. Nat. size. 

 An unusually sandy specimen. 

 A large specimen with a group of seven 



young pearl oysters adhering, 

 to 30. The right and left sides of two speci- 

 mens, with test removed, to show gonads, 

 and 32. The dorsal tubercle of two 



specimens, x 40. 

 Part of the branchial sac. x 40, 

 Pd/ycarpa mutilans, n. sp, Nat. size. 

 The same cut open to show the interior 



with no branchial sac. 

 Section of the body-wall to show the 



abundant endocarps. x 15, 

 Dorsal lamina and branchial sac. x 40. 

 Another specimen of this species. 

 One of the large simple tentacles, x 40. 

 to 42. Outlines of endocarps, enlarged, 

 and 44. Dorsal tubercle of two specimens. 



x40. 



