104 
BRITISH RADIATA. 
2. Flustra membranacea. 
Flustra membranacea, j Fabr.Faun. GrcBnlA^'J ; 
Mull. Zool. Dan. Prod. 253 ; Ellis and Soland. ZoopJi. 18 ; 
Flem. Brit. Anim. 536 ; Johnst. Trans. Newc. Soc. ii. 265 ; 
Blainv. Actinol. 450 ; Couch, Zooph. Cornw. 55 ; Corn. Faun. 
iii. 123. pi. 21. fig. 2 ; Johnst. Hist. Brit. Zooph. ed. 2. p. 348. 
t. 66. figs. 1, 2, 3. 
FI. telacea, Lamk. Anim. s. Vert. ed. 2. ii. 223 ; Grant, loc. 
cit. iii. 111. 
Membranipora membranacea, Blainv. Actinol. 447. 
a, h, c, d, e. On Fucus. Berwick Bay. Presented by G. 
Johnston, M.D. 
/. OnGigastina. Ayrshire, Rev. D. Landsborough.^’ Pre- 
sented by G. Johnston, M.D. 
g. On Fucus vesiculosus. Presented by G. Johnston, M.D. 
h. Patch on Fucus. Holy Island. Presented by G. John- 
ston, M.D. 
2. Chartella. 
Flustra, sp. Linn . ; Johnst. Brit. Zooph. ed. 2. p. 343. 
Chartella, Gray, Appendix and Proc. Zool. Soc. 1848. 
1. Chartella papyracea. 
Eschara papyracea utrinque cellifera, summitatibus securis aciei 
instar truncatis, Ellis, Corail. pi. 38. fig. 8. ^ 
Flustra papyracea, Ellis and Soland. Zooph. 13; Flem. Brit. 
Anim. 535 ; Lister, Phil. Trans. 1834, 384. pi. 12. fig. 3 ; 
Milne- Edwards, Lam. Anim. s. Vert. ed. 2. ii. 220 ; Blainv. 
Diet. Sci. Nat. lx. 415. 
F. chartacea, Turt. Gmel. iv. 663 ; Turt. Brit. Faun. 209 ; Stew. 
Elem. ii. 436 ; Couch, Corn. Faun. iii. 121 ; Johnst. Hist. 
Brit. Zooph. ed. 2. p. 343. t. 60. figs. 5, 6 ; Lamx. Pol. Flex. 
104. 
a, h, c, d. Dry. Blackrock, Dublin. Presented by G. 
Johnston, M.D. 
e,f. Dry. Hastings, Sussex. Presented by G. Johnston, 
M.D. 
2. Chartella securifrons. 
Fucus marinus scruposus, Raii Syn. 43. no. 10 ; Morris, Hist. 
Plant. Oxon. iii. 546. t. 1. fig. 17 (opt.). 
Narrow-leaved Horn wrack, Ellis, Corail. 69. no. 1. 1.28. fig. 1. a, 
A, B. 
Eschara foliacea /3, Linn. Syst. ed. 10. 804. 
E. securifrons, Pall. Elench. 56. 
