110 
BRITISH RADI ATA. 
10. Amphiblestrum. 
Amphiblestrum, Gray, Appendix, Proc. Zool. Soc. 1848. 
Membranipora, sp. Blainv. ; Joknst. Brit. Zooph. ed. 2 ; M.-Edw. 
Lamk. Hist. ed. 2. ii. 225. 
Flustra, sp. Muller ; Johnst. Brit. Zooph. ed. 1 . 
1. Amphiblestrum raembranaceum. 
Flustra membranacea, Mull. Zool. Dan. Prod. 253. no. 3054 ; 
Zool. Dan. iii. 63. t. 117- figs. 1,2; Fair. Faun. Grcenl. 437 ; 
Lamour. Corail. 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. Diet. 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. D. S.N. lx. 412; Man. Act. 447- 
Flustra tuberculata, Johnst. Brit. Zooph. 289; 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. 
f. 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, II as sail? ” 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. Ilogg has proved that it is the 
nidus of Natica monilifera, Linn. Trans, xiv. 318, &c. 
Fam. 5. Bugulid^e. 
Bugulidae, Gray , Appendix, Proc. Zool. Soc. 1848. 
Cellularidse part., Johnst. Brit. Zooph. 
Escharidae part., Johnst. Brit. Zooph. ed. 1. 248, ed. 2. 264; 
Gray, Syn. Brit. Mus. 1847, 135. 
