MARINE POLYZOA. 8? 



am therefore very much in doubt, with Dr. Johnston, whether 

 this form is to be referred to the C. bimucronata of Lamouroux. 



3. CELLEPORA VITRINA. 



Cells ovate, ventricose ; mouth simple, orbicular ; rostrum 

 anterior, wanting in the marginal cells. Ovicell shallow, open 

 in front, recumbent. 

 Cellepora vitrina. Johnst. Brit. Zooph. i. 300; Couch, Corn. 



Faun. pt. 3. p.' 109. pi. 22. fig. 1. 

 Hob. Coast of Cornwall, not rare, Couch. Portaferry, Ireland, 



W. Thompson. 



The figure of this species has been accidentally omitted, but will 

 be given, with others, in a supplementary part of this Catalogue. 



4. CELLEPORA BISPINATA, n. s. PL CXX. figs. 1, 2. 



Cells ovate, elongated, surface granular ; mouth orbicular or 

 sub quadrangular ; rostrum anterior, with a very minute avicula- 

 rium on one side ; two long oral spines on the opposite margin. 



Hab. Tasmania, Mrs. Smith ; J. D. Hooker. On fucus. 



5. CELLEPORA MAMILLATA, n. s. PI. CXX. figs. 3, 4, 5. 

 Cells ovate, ventricose, immersed, forming an incrusting poly- 



zoarium, the surface of which is studded with mamillary pro- 

 jections ; mouth orbicular ; rostrum large, conical, with a large 

 avicularium on the internal face, sometimes a conical spine on 

 the opposite side of the mouth. 

 Hab. Coast of Patagonia, Darwin. 



** Erect. 



6. CELLEPORA RAMULOSA. PI. CIX. figs. 1, 2, 3. 

 Polyzoarium composed of dichotomous or irregularly dividing 



cylindrical branches. Cells ovate, slender ; rostrum with a small 

 avicularium on one side. Ovicell subglobose. 



Cellepora ramulosa, Linn. Syst. 1285 ; Mull. Zool. Dan. Prod. 



253 ; Flem. Brit. Anim. 532 ; Johnst. Trans. Newc. Soc. ii. 



267. pi. 12. figs. 3, 4 ; Lamk. Anim. s. Vert. ed. 2. ii. 258 ; 



Thompson, Ann. fy Mag. Nat. Hist. vii. 481 ; Hassall, ibid. 



vii. 367 ; Couch, Zooph. Cornw. 49 ; Corn. Faun. iii. 1 10. pi. 20. 



fig. 2; Macgilliv. Ann. fy Mag. Nat. Hist. ix. 467; Johnst. 



Hist. Brit. Zooph. ed. 2. p. 296. t. 52. figs. 4, 5 ; Gray, List 



Brit. Rad. p. 129. 

 Cellepora pumicosa var., Pallas, Elench. 255 ; Ellis 4* Soland. 



Zooph. 136. 



Cellepora Isevis, Macgilliv. Ann. fy Mag. Nat. Hist. ix. 46?. 

 Hab. Britain, from Shetland to the South. 



