SCHIZOTHECA DIVISA. 285 



coarse and granulousj and losing altogether their vitreous 

 character and their lustre, whilst the very characteristic 

 spines are usually wanting. At first sight the species is 

 hardly recognizable in this condition. 



Habitat. On shells, stones, &c., from moderate depths. 



Localities. Coast of Devon (Miss Cutler) : Exraouth 

 (Barlee) : off the Deadman, Cornwall, 30-40 fathoms ; 

 Birterbuy Bay (T. H.) : Guernsey, where it is abundant 

 (Alder) : coast of Antrim (Hyndman). 



Geographical Distribution. Naples (A. W. Waters). 



Mr. Busk describes ^'two or three unequal teeth ^' as 

 occurring on either side of the mouth ; but I believe that 

 these are nothing more than the stumps of some of the 

 spines which are set very far forward, so as to project in 

 front of the ovicell. The whole number of the spines is 

 six. 



ScHizoTHECA DIVISA, Norman. 

 Plate XLI. figs. 4-6. 

 Lepralia DIVISA, Norman, Ann. N. H. Jan. 1864, 86, pi. x. fig. 6. 



Zooecia small, crowded, slightly convex, smooth, disposed 

 in regular lines ; orifice orbicular, raised, tubular, with 

 six very long and slender spines above, a slight notch 

 and two or three minute denticles on the lower margin, 

 which is much swollen, and sometimes produced into 

 a large spatulate process or flattened umbo. Ooecia 

 semielliptical, much elevated, smooth, flattened in front, 

 and with a narrow, slit-like fissure, which is not open 

 below. 



Colonies of a glossy white colour when fresh. 



Habitat. On dead shells, in moderate depths and in deeper 

 water. 



