110 
BRITISH RADIATA. 
10. Amphiblestrum. 
Ampliiblestrum, Gray, Appendix, Proc. Zool. Soc. 1848. 
Membraiiipora, sp. Blainv. ; Johnst. Brit, Zooph. ed. 2; M.-Bdw, 
LamJc. Hist. ed. 2. ii. 225. 
Flustra, sp. Muller •, Johnst. Brit. Zooph. ed. 1. 
1. Amphiblestrum membranaceum. 
Flustra membranacea. Mull. Zool. Ban. Prod. 253. no. 3054 ; 
Zool. Ban. iii. 63. t. 117. figs. 1, 2; Fahr. Faun. Grcenl. 437 ; 
Lamour. Corall. 47 ; M.-Edw. Lamk. Hist. ed. 2. ii. 225 ; 
Blainv. Man. Act. 450. 
Membranipora membranacea, Johnst. Hist. Brit. Zooph. ed. 2. 
p. 328. t. 56. fig. 7- &p.478 ; not Blainv. Bict. Sc. Nat. 412. 
Flustra unicornis, Flem. Edin. Phil. Journ. ii. 87 ; Flem. Brit. 
Anim. 236; Blainv. Act. 450; Johnst. Trans. Newc. Soc. ii. 266. 
Membranipora unicornis, Blainv. B. S. N. lx. 412; Man. Act. 447 . 
Flustra tuberculata, Johnst. Brit. Zooph. 2S9; Bose, Vers, iii. 143. 
Flustra Peachii, Couch, Rep. Corn. Polytechnic Soc. 81 (see 
Johnst. Brit. Zooph. 478). 
a, b, c, d, e. On shells and stone. Berwick Bay. Presented 
by G. Johnston, M.D. 
/. On slate. “ Flustra unicornis.” Presented by G. John- 
ston, M.D. 
g. On flint. ^^F. unicornis var.” Presented by G. John- 
ston, M.D. 
h. On a shell. “Lepralia indentata, HassalFl’^ Presented 
by G. Johnston, M.D. 
N. B. Flustra arenosa, Ellis and Soland. Zooph. 17 ; Stew. Elem. 
ii. 437 ; Bose, Vers, iii. 142 ; Johnst. Hist. B. Z. ed. 2. p. 350. 
Millepora arenosa anglica, Raii Syn. i. 31. 
English sandy Millepore, Ellis, Corail. 74. no. 5. pi. 25. fig. e. 
Eschara lutosa, Pall. Elench. 37 . 
Alcyonium arenosum, Turt. Gmel. iv. 564; Turt. Brit. Faun. 207. 
According to Mr. Boys “ is undoubtedly the nidus of some marine 
animal, as I have found the cells entire, with eggs in each.” 
Linn. Trans, v. 231. Mr. J. Hogg has proved that it is the 
nidus of Natica monihfera, Linn. Trans, xiv. 318, &c. 
Fam. 5. Bugulid^. 
Buguhdse, Gray, Appendix, Proc. Zool. Soc. 1848. 
CeUularidse part., Johnst. Brit. Zooph. 
Escharidse part., Johnst. Brit. Zooph. ed. 1 . 248, ed. 2. 264 ; 
Gray, Syn. Brit. Mus. 1847, 135, 
