290 Leuckart: Bericht üb. d. Leist. in d. Naturgeschichte 



a. Polypen ganz in der Sarcosoma znrückziebar. Briareum. 

 Polypen ohne Kelche, regelrecht im Stamme vertheilt. 



Paragorgia. Polypen mit warzenförmigen Kelchen, unregelmäs- 

 sig vertheilt. 



b. Polypen nur theilweise zurückziehbar. 

 Solenogorgia Genth. Stamm rinnen- oder röhrenförmig. 

 Semperina Köll. Stamm walzenförmig. 



Gray bandelt in den Ann. and Mag. nat. hist. T. V. 

 p. 405 — 408 „on some new genera and species of Alcynoid 

 Corals in the british museum". Als neu wird dabei auf- 

 gestellt : Gen. Bus eil a (mit Rhipidogorgia occatoria M. 

 Edw. H.), Murit ella (mit Gorg. fucosaVal. = G. albi- 

 cans Köll.), B oar ella (B. flabellata n.), Menace IIa 

 (mit Gorg. reticularis Pall.), Phaeocella (mit Gorg. tu- 

 berculata Esp.), Bovella (B. ramulosa n.), Menella 

 (M. indica n. Bombay), Lignella (mit Gorg. Richardi 

 Lmx.), Leuco ella (L. cervicomis n.). Die Diagnosen 

 unseres Verf.'s lautea wie folgt. 



Bus ella Gr. Coral fan-shaped, forming an oblong frond, 

 very much branched and closely reticulated, with a number of short 

 club-shaped branchlets diverging from the sides of the frond; bran- 

 ches and branchlets cylindrical, diverging, furcately branched. Bark 

 thin, granulär, smooth. Polype-cells on all sides of the branches 

 and branchlets, sunken, close together, with a small round mouth. 

 Axis continuous, horny, black. 



Murit ella Gr. Coral branched in a plane; stem much 

 compressed, broad; branches and branchlets subcylindrical , apex 

 subclavate. Bark rather thick, granulär, with a uniform smooth 

 surface. Polype-cells large, entirely sunken, scattered over the whole 

 surface of the bark, with a very small contracted linear mouth. 

 Axis of the stem and lower branches compressed, horny, of branchlets 

 cylindrical, with a horny external coat and with soft pitli within. 



Boarella Gr. Coral branched in a plane, fan-shaped, for- 

 ming an oblong frond with in single stem ; branches and branch- 

 lets slender, nearly of the same diameter, netted; branches diver- 

 ging and often inosculating, some of the marginal branchlets free. 

 Bark thin, formed of thin scales or spicules. Polype-cells subcylin- 

 drical, elongate, truncate, membranaceous translucent, with a circular 

 mouth with ten marginal folds and ten short valves in an irregulär 

 series on each side of the branches, diverging in dififerent directions, 

 one, sometimes two or three, together. Axis continuous horny. 



Menacella Gr. Coral very much branched, fan-shaped, 

 irregularly reticulated; stem simple. Bark very thin, formed of 



