404 W. G. Van Name — Bermuda Ascidians. 



Figure 12. — Cystodytes violaceus, n. sp. Zooid (much contracted) seen from the 



left dorsal aspect, containing two large eggs. Eectum containing pellets of 



undigested matter, x 32. Page 348. 

 Figure 13. — Cystodytes violaceus. Small spicules which are scattered in the test. 



x 40. Page 348. 

 Figure 14. — Cystodytes violaceus. Large spicules forming the capsules about 



the zooids, but occurring to some extent elsewhere in the test, x 40. 



Page 348. 



Plate XLIX. 



Figure 15. — Distaplia bennudensis, n. sp. Zooid seen from the right side, 

 showing the muscle bands of the mantle, x 32. i. fr=intermediate trans- 

 verse vessel of branchial sac. Page 349. 



Figure 16. — Distoma convexum, n. sp. Zooid seen from the left side, showing 

 arrangement of brown pigment spots on the mantle, x 32. Musculature 

 of mantle not shown. Page 342. 



Figure 17. — Cystodytes draschii Herdman. Zooid seen from the left side. x 32. 

 Page 347. 



Figures 18 and 19. — Distaplia bennudensis, n. sp. Colony of the flattened in- 

 crusting form showing the arrangement of the zooids. Side and top view, 

 x 2. Page 349. 



Plate L. 



Figure 20. — Amaroucium bermudai, n. sp. Zooid with short post-abdomen, 

 seen from the right side. Dorsal languets not represented in the figure. 

 Ovary not developed, e. c.=large ectoderm cells on the mantle, x 32. 

 Page 352. 



Figure 21. — Amaroucium exile, n. sp. Zooid seen from the left side containing 

 a large embryo. Dorsal languets not represented, x 32. Page 354. 



Figure 22. — Symplegma viride Herdman. Colony, two-thirds the natural size. 

 (After Herdman. ) Page 378. 



Figure 23. — Echinoclinum verrilli, n. sp. Entire colony incrusting a branching 

 alga, showing distribution of zooids and spicules, x 2. Page 372. 



Figure 24. — Echinoclinum verrilli. Zooid seen from the left side. No repro- 

 ductive organs developed, x 32. Page 372. 



Figure 25. — Echinoclinum verrilli. Spicules from the test, x 225. Page 372. 



Plate LI. 



Figure 26. — Didemnum lucidum, n. sp. Spicules, x 450. Page 360. 

 Figure 27. — Didemnum savicjnii Herdman. Spicules, x 450. Page 358. 

 Figure 28. — Didemnum lucidum, n. sp. Colony incrusting a branching alga, 



showing distribution of zooids and spicules. x 2. Page 360. 

 Figure 29. — Didemnum porites, n. sp. Spicules. x450. Page 360. 

 Figure 30. — Didemnum atrocanum, n. sp. Spicules, x 450. Page 359. 

 Figure 31. — Didemnum solidum, n. sp. Spicule, x 450. Page 358. 

 Figure 32. — Didemnum orbiculatum, n. sp. Spicules, x 450. Page 361. 

 Figure 33. — Didemnum porites, n. sp. Zooid seen from the left side. x32. 



Page 360. 



