BIMEBIA VESTITA. 103 



cup, from whose centre the long peduncle of the gonophore 

 springs. They occur on the stem and primary branches, 

 and also on the fibrous mat from which the zoophyte rises. 

 Hob. Inch Garvie (T. S. W.) : on rocks, zoophytes, and 

 seaweeds near low- water mark, Firth of Forth (G. J. A.) : 

 Shetland (T. H.). 



Genus BIMERIA, T. S. Wright. 



Der. Formed from the name of the Bimer Eock, iu the Firth of Forth. 

 MANICELLA, Allman. 



GENERIC CHARACTER. Stems branched, rooted by a 

 thread-like stolon, the whole of the ccenosarc enclosed in a 

 chitinous polypary ; polypites vase-shaped, with a single 

 verticil of filiform tentacles, the body and the lower part of 

 each tentacle clothed in an opake-brown membrane ; gono- 

 phores borne on short ramules developed on the stem and 

 branches, and containing fixed sporosacs. 



B. VESTITA, T. Strethill Wright. 



BIMERIA VESTITA, T. S. Wright, Edinb. N. P. Journ. (N. S.) for July 1859, 



109, pi. viii. fig. 4 ; Allman, Ann. N. H. for May 1864. 

 MANICELLA FUSCA, Allman, Ann. N. H. for July 1859, and August 1859. 



Plate XV. fig. 2. 



STEM very slender, branched, the branches alternate, spi- 

 rally corrugated above their origins, bearing a few short 

 ramules ; the polypary of a dull brown colour, covered 

 with minute particles of earthy matter and sand, and 

 continued as a membranous envelope over the body of 

 the polypite and the lower half of the tentacles ; POLY- 

 PITES with a slightly alternating series of about 16 



