Bull. U. S. F. C. 1902. 
Plate 13. 
Pigs. 91-94. Thyone scabra.— 91. Two pieces of calcareous ring ( x 5). 92. Madrepore plate ( X 20). 93. Tables from skin; 
side and external views (x 156). 94. Supporting rods from tentacles (x 156). 
- ~ ' ' — ' 97. Tables; side and 
Sup- 
, . , I seen 
from outer side ( x 5). . m .. .... 
Figs. 103, 104. Caudina arenata. — 103. Part of calcareous ring ( x 5). 104. Tables from skin ( x 156). 
Figs. 105-108. Troch o stoma ooliticum. — 1 05. Part of calcareous ring (X 5). 100, 107. Tables from skin (x 156). 108. Red- 
dish-brown bodies from skin (x 156). 
side and external views ( x 156). 94. supporting rous irom tentacles t x mo;. 
Figs. 95-102. Thyone briareus — 95. Two pieces of calcareous ring ( x 5). 96. Madrepore plate ( x 20). 9/. Tables; side ai 
external views ( x 156). 98. Terminal plate of pedicel ( x 50). 99. Supporting rods from pedicels ( x 156). 100 Su 
porting rods from tentacles ( x 156) . 101. Calcareous ring from cloaca ( x 5). 102. Calcareous ring, laid flat and se 1 
