HELCIONISCUS. 153 



H. DIRUS Reeve. PI. 73, figs. 88, 89. 



Shell ovate, erectly conoid, densely radiately ridged and ribbed, 

 ribs and ridges very closely broken up into small warts. Dark blue- 

 black, sub-iridescent in the interior. 



Although a similarity prevails between the figures of this and the 

 preceding species [P. guttata Orb.], they are very different. P. dim 

 being of a deep, erectly conical form, rayed throughout with close- 

 set ribs and ridges, crenated with small tumid warts. (Eve.) 



Habitat unknown. 



P. dira REEVE, Conch. Icon. f. 92, 1855. 



H. FUNGUS Reeve. PL 44, figs. 18, 19. 



Shell ovate, depressly conoid, apex raised, subcentral ; radiately 

 densely ribbed and ridged, ribs and ridges narrow, small, everywhere 

 finely noduled. Dull ash, dotted around the apex and near the mar- 

 gin with reddish-brown, with nodules whitish. Interior semitrans- 

 parent, iridescent. 



A dull ash, depressly conoid shell, densely rayed with finely 

 noduled ribs and ridges, sparingly marked with reddish-brown dots, 

 which are seen most distinctly in the interior of the shell. (live.) 



West Indies (Rve.) 



" Tectura fungus MEUSCHEN " teste Reeve. Patella fungus RVE., 

 Conch. Icon., f. 105, 1855. 



This seems to be a Heleioniseus of the H. exaratus type. The 

 locality given by Reeve is in all probability incorrect. 



H. (?) ADEL^E Potiez & Michaud. PI. 67, figs. 11, 12. 



Shell ovate, depressed, blackish, painted with nearly regularly 

 placed oblong white spots ; radiately most finely costulated, the rib- 

 lets very numerous, unequal, subgranulous. Vertex anterior, acute 

 and tawny ; margin acute, entire. Inside blackish in the depth of 

 the cavity, the margin maculated, intermediate space whitish. 

 Length 15, breadth 10, alt. 4 mill. (P. & 31.) 



Habitat unknown. 



P. adelce P. & M ., Galerie des Moll., Mus. de Douai, i, p. 523, t. 37' 

 f. 1, 2, 1838. 



H. LINEATUS Lamarck. PI. 73, figs. 85, 86, 87. 



Shell oval, convex, buff-brown, painted with 10-12 yellow lines ; 

 excessively numerous longitudinal close stride ; vertex acute, buff. 

 Length exceeding one inch. (Lam.) 



Habitat unknown . 



