58 COKYNID^E. 



PITES with 15-20 tentacula, body deep orange, becoming 

 pale where it passes into the stem ; GONOPHORES borne 

 on short peduncles in a dense cluster immediately behind 

 the lowest tentacles. 



GONOZOOID. UMBRELLA bell-shaped, with its transverse 

 and vertical diameters nearly equal, covered with thread- 

 cells, and traversed by two opposite interradial furrows, 

 extending from the base of the manubrium to the margin 

 of the bell; MANUBRIUM deep orange; MARGINAL TEN- 

 TACLES springing from orange bulbs, with a distinct 

 ocellus, nodulated with clusters of thread-cells, and 

 with a larger spherule at the extremity. 



CLOSELY allied to S. decipiens, from which it differs " in 

 its simple habit, in the more ovate form of the polypite, 

 and in its more numerous tentacles" (Allman). The um- 

 brella also has only two of the furrows, instead of four as 

 in Dujardin's species. 



Hub. Rooted to the bottom of rock-pools near low-water 

 mark. Skelmorlie, Firth of Clyde (G. J. A.) . 



Genus ZANCLEA, Gegenbaur *. 



GEMMARIA, M'Cracly, Gymnophthalmataof Charleston Harbour, Proc. Elliott 

 Soc. Nat. Hist. Charleston, 151. 



GENERIC CHARACTER. Stem simple or branched, rooted 

 by a creeping filiform stolon, the whole invested by a chitin- 

 ous polypary ; polypites more or less clavate ; tentacles capi- 

 tate, scattered over the body ; gonophores borne on the body 

 of the polypite, and originating free medusiform zooids. 



Umbrella of the sexual zooid (at the time of liberation] 

 nearly spherical; manubrium not reaching the margin of 

 the bell, tvith a simple mouth ; radiating canals 4 ; marginal 



* "Versuch eines Systemes cler Medmen,' 1 in Zeitschrift fur wissenschaft- 

 liche Zool. 1856, p. 229, t, viii. fig. 4. 



