MITRELLA. 125 



Apparently closely allied to the preceding species, but has 

 smooth spire-whorls, and somewhat different coloring. 



C. BROOKEI, Reeve. PL 48, fig. 86. 



Shell fusiform, narrow, somewhat curved, smooth, linearly 

 grooved at the base ; yellowish, densely waved with chestnut 

 streaks, stained darker at the base ; aperture narrow, lip denticu- 

 lated within. 



Sarawak, Borneo (Mus. Taylor). 



I am not acquainted with this species ; the figure resembles 

 the smooth variety of C. zebra, Gray, except that the spire is 

 longer. 



C. SEMICONVEXA, Lam. PL 48, figs. 87-93. 



Shell rather thick, smooth, striated at base ; pale, longitudinally 

 flamed and reticulated with red-brown ; aperture roseate within ; 

 outer lip strongly dentate. Length, 8-18 mill. 



S. Australia, Tasmania. 



Varies considerably in form and coloring. 



With this are to be placed as synonyms G. rosacea, Reeve (fig. 

 89). and C. saccharata, Reeve ( fig. 90), short and long specimens 

 which have lost their overlying reticulated pattern of chestnut 

 spots jind Hames. (..'. lntea, Quoy dig. 91), from Tonga-Taboo, 

 is an unrecognized species, which may. perhaps be a worn C. 

 xc.ni/co/irexa; veiy likely C. polUa, Reeve (fig. 92), described 

 from a single specimen in the Taylor collection, and without 

 habitat, is also a synonym. C. miltostoma, Tenison-Woods, was 

 described from a small specimen, six millimetres long; I have 

 specimens (fig. 93) agreeing essentially with this description 

 and eight mill, in length, strongly resembling C. rosacea, above ; 

 the two may constitute a minor variety, perhaps. 



C. PICTA, Reeve. PL 48, fig. 94. 



Shell ovate, rather thick, spire somewhat obtuse, smooth ; 

 reticulately flamed with chocolate and white ; aperture rather 

 small, narrow ; lip thickened, denticulated within. 



Length, 13-5 mill. 



Habitat unknown (Mus. Cuming). 



I think this will prove to be a color-variation of the last 

 species. 



