136 
BRITISH UADIATA. 
2. Crisia geniculata. 
Tibiana, Lister, Phil. Trans. 1834, p. 385. pi. 12. fig. 5. 
Crisia geniculata, M.-Edwards, Ann. des Sci. Nat. n.s. ix. 197. 
pi. 6. fig. 1 ; Mem. 5 ; Johnst. Hist. Brit. Zoopk. ed. 2. p. 287. 
a. On Fuci, with Sertularia polyzonias. Ireland, W. 
Thompson, Esq. Presented by G. Johnston, M.D. 
b. “A specimen which proves that Cr. geniculata and Cr. 
eburnea are one species?” Presented by G. Johnston, 
M.D. 
c. Ayrshire, Rev. D. Landsborough. Presented by G. John- 
ston, M.D. 
3. Crisia acideata. 
Crisia aculeata, Hassall, Ann. <$- Mag. Nat. Hist. vi. 170. pi. 7- 
figs. 3, 4, & vi. 366 ; Johnst. Hist. Brit. Zooph. ed. 2. p. 285. 
Crisie ivoire, M.-Edwards, Ann. des Sci. Nat. n. s. ix. 198. pi. 6. 
fig. 2 ; not Larnx. 
Crisia eburnea, Van Beneden, Recherch. 52. pi. 6. figs. 12-16 
(without the spinous processes). 
a.? b.l On Sertularia. Presented by G. Johnston, M.D. 
4. Crisia denticulata. 
Cellaria denticulata, Lamk. Anim. s. Vert. ii. 137, ed. 2. ii. 182. 
Crisia denticulata, Johnst. Hist. Brit. Zooph. ed. 2. p. 284. t. 50. 
figs. 5, 6. 
Crisie dentel6e, M.-Edwards, Ann. des Sci. Nat. n.s. ix. 201. 
pi. 7- fig. 1. 
Crisia luxata, Flem. Brit. Anim. 540 ; Blainv. Diet. S. N. lx. 424; 
Actinol. 460 ; Johnst. Brit. Zooph. 262 ; Thompson, Ann. Nat. 
Hist. v. 252 ; Couch, Zooph. Cornw. 42 ; Corn. Faun. iii. 99. 
pi. 18. fig. 3; Macgilliv. Ann. <^- Mag. Nat. Hist. ix. 466. 
Crisia patagonica?, D’Orbigny, Voy. Amtfr. Merid. 
a. Dry, on Sertularia. Berwick Bay. Presented by G. 
Johnston, M.D. 
b. Dry, on Fuci. Carnlough, co. Antrim. Presented by 
G. Johnston, M.D. 
c. On black paper. Presented by G. Jolmston, M.D. 
d. Jersey. Presented by G. Johnston, M.D. 
2. Falcaria. 
Falcaria, Oken, Lehrb. Nat. 91, 1815; F. comuta, type. 
Crisidia, M.-Edwards, Mem. ; Johnst. Brit. Zooph. ed. 2. 287, 
1847. 
Eucratea, Lamx. Bull. Soc. Phil. iii. 1812; E. cornuta, type. 
Uuicellaria, sp. Blainv. Diet. Sci. Nat. lx. 1830. 
