408 W. G. Van Name — Bermuda Ascidians. 



Figure 91.— Microcosmus miniatus Verrill. Outline of individual (removed 

 from the test) showing alimentary and reproductive organs of both sides. 

 Two-thirds the natui-al size. Page 396. 



Figures 92, 93 and 94. — Polycarpa obtecta Traustedt. Outlines of three 

 individuals (removed from the test), showing alimentary and reproductive 

 organs of both sides. Two-thirds the natural size. Page 386. 



Figure 95. — Microcosmus miniatus Verrill. Small piece of the branchial sac 

 from one of the spaces between two folds near the middle of the body, 

 x 24. Page 396. 



Plate LVIII. 

 Photographs of colonies of Compound Ascidians ; all natural size. 



Figure 96. — Amaroucium bermudce, n. sp. Three colonies seen from the side. 



Page 352. 

 Figure 97. — Amaroucium bermudce, n. sp. Colony seen from above. Page 352. 

 Figure 98. — Amaroucium exile, n. sp. Two colonies seen from above. Page 



354. 

 Figures 99 and 100.— Cystodytes draschii Herdman. Colony seen from above. 



Page 347. 

 Figure 101.— Cystodytes draschii Herdman. Colony see from the side. A 



portion is cut away, showing the white calcareous capsules surrounding 



the zooids. Page 347. 

 Figure 102. — Polysyncraton amethysteum, n. sp. Colony attached to a piece of 



sponge. Seen from above. Showing the characteristic distribution of the 



spicules on the surface of the colony. Page 366. 

 Figure 103. — Diplosoma atropunctatum, n. sp. Colony attached to a fragment 



of coral (Porites). The same specimen is shown enlarged in figure 137. 



Page 370. 

 Figure 104.— Distoma convexum, n. sp. Colony (sectioned) seen from above and 



from one side, showing the cut surface. Page 342. 

 Figures 105 and 106. — Distoma obscuratum, n. sp. Two colonies seen from 



above. Page 343. 

 Figure 107. — Distoma capsulatum, n. sp. Two colonies seen from above. Page 

 * 341. 



Plate LIX. 



Photographs of colonies of Compound Ascidians ; all natural size. 



Figure 108. — Distaplia bermudensis. n. sp. Flat incrusting colony seen from 



above. Page 349. 

 Figure 109.— Michaelsenia tincta, n. sp. Colony seen from above. Page 381. 

 Figure 110.— Botrylloides nigrum Herdman, var. nov. planum. Colony incrust- 

 ing a piece of limestone. Page 377. 

 Figure 111. Distaplia bermudensis, n. sp. A capitate and an irregularly 



incrusting colony, the former seen from the side, the latter from above. 



Page 349. 

 Figure 112. — Didemnum savignii Herdman. Colony seen from above. (A small 



piece has been removed.) Page 358. 



