MARINE POLYZOA. 85 



45. LEPRALIA DISCRETA. PL CI. figs. 3, 4. 



Cells decumbent, cylindrical, ringed, widely distant and con- 

 nected to each other by tubular processes ; mouth contracted, 

 orbicular. Ovicell decumbent, slightly keeled in front, flattened, 

 and wider above, not punctured. 

 Hab. E. Falkland Islands, 4-10 fathoms. T. del Fuego, Darwin. 



California, (from) Dr. Greville. 



The three latter species, viz. L. hyalina, annularis and dis- 

 creta, form a very natural group, with which L, gram/era might 

 not improperly be conjoined, and perhaps also L. tennis. 



46. LEPRALIA ANNULARIS. PL XCV. figs. 1, 2. 



Cells decumbent, cylindrical, disposed side by side in concen- 

 tric circular rows ; mouth contracted, orbicular, with a strong 

 tubular process on each side. Ovicell decumbent, acuminate, 

 not punctured. 



Eschara annularis, Moll, Seerinde, p. 39. pi. 1. fig. 4; Pallas, 



Elench. Zooph. p. 48. sp. 13 (sed sp. 9 huj. gen.); Boddaert 



in Pall. Belg. p. 59. 

 Escharina concentrica, Lamarck, ed. 2. ii. 237 ; Lamouroux, 



Polyp. Flex. p. 108. 

 Hab. Cape of Good Hope, W. H. Harvey. Algoa Bay. On 



fucus. 



Fam. 11. CELLEPORIDJS. 



Polyzoarium composed of cells more or less vertical to its axis 

 or plane, heaped together, or irregularly overlying each other. 



1. CELLEPORA. 



Polyzoarium calcareous, rigid, adnate or erect ; composed of 

 urceolate, suberect, contiguous cells, heaped together irregularly 

 or arranged quincuncially. An ascending rostrum on one or 

 both sides of the mouth, furnished with an avicularium. 



Cellepora, sp., 0. Fabricius, Faun. Grcenl. ; Johnst. Brit. Zooph. 

 ed. 2. p. 295 ; Linn. System; Muller, Zool. Dan. Prod.; Berk. 

 Syn. ; Stewart, Elements; Lamarck, An. s. Vert, (part.); La- 

 mouroux, Hist. Polyp. Flex. p. 85 (part.) ; Fleming, Brit. An. ; 

 Olivi, Zool. Adr. 



Spongites, Oken, Lehrb. Nat. 85, 1815. 



Tubipora (part.), Linn. Syst. Nat. 



Millepora, Pall. Elenchus ; Ellis 8f Solander (part.). 



Eschara (part.), Pallas, Elench. 



