Genus Latirus, 397 



shell, which is not unlike Cantharus gracilis (Reeve) in form 

 superficially suggesting the trivial name. 

 Type at present unique in my collection. 



6. Peristernia CREMNOCHIONE sp. nov, (Fig. 9). 



P. testa subattenuatdyfusiformiyanfractibus septentyangu- 

 liferiSy longitudinaliter costulatisy ad angulis costarum prce- 

 cipue albofusis sulculis plus minitsve biniSy transversini 

 rugulosiSy fascia fulvo-brunned ad suturas et in medio ultimo 

 anfractu insigniy columella triplicatdy aperturd palliddy ovatdy 

 labro subangulato. 

 Long. 24 m. 

 Lat. II m. 

 Hab. Mauritius. 



This seems a variable little species, of which I have seen 



a good many specimens — the central brown fascia is, 



however, present in them all, the number of ribs, and their 



more or less angularity vary immensely : the ribs of one 



specimen I have — and which at one time was thought to be 



new — are quite destitute of any angles whatsoever, and the 



style of painting differs, giving the semblance of pseudo- 



varices. This may be called variety j3. pkotiformiSy the 



general appearance resmbling Phos roseatus (Hinds), in 



miniature. Of this species the type figured is one of two in 



the British Museum, South Kensington. I have received, 



through Mr. G. B. Sowerby, four other specimens mostly 



differing, as I have said, in the style of painting. This 



species and the last belong to the same section of the genus 



as P.pulchella (Reeve) and P. maculatay also of Reeve. 



7. PERISTERNIA SMITHIANA, Sp. nov. (Fig. 8). 



P. testa fusifonni fulvo-ochracedy ad angulos costarum 



pallidiorCy anfractibus septemy interdum octOy longitudinaliter 



forticostatiSy liris et costis tranversim alternantibuSy ad suturas 



rugulosiSy in medio angulatiSy canali brevi, subrecurvd^ 



Y 



