204 DRILLIA. 



D. OBLIQUICOSTATA, Reeve. PI. 12, fig. 12. 



Longitudinal ribs oblique, narrow, a little waved, obtusely 

 pointed on the periphery ; a few revolving stride at the base of 

 the body-whorl ; yellowish white, spotted and maculated with 

 chestnut. Length, 16 mill. 



Habitat unknown. 



A species which evidently has no especial characteristics. 

 I am not acquainted with it. 



D. CROCATA, Reeve. PL 12, fig. 13. 



Shell pyramidally oblong, transversely elevately striated, 

 longitudinally ribbed, last whorl furnished with a small gibbous 

 tubercle, canal very short, aperture short, sinus broad, large ; 

 whitish, covered with a saffron-olive epidermis. 



Length, '8 inch. 



Habitat unknown. 



This shell is unknown to me, but appears closely related to 

 D. Sinentris, Hinds. 



D. AQUATILIS, Reeve. PL 12, fig. 16. 



Shell ovately turreted, solid, spire acuminated, whorls smooth, 

 depressed round the upper part, obliquely plicately tubercled ; 

 canal very short, sinus large ; ivory-white, painted with bands 

 of extremely fine pale horny brown waved lines. 



Length, '75 inch. 



Habitat unknown. 

 D. PALLIATA, Reeve. PL 12, fig. 15. 



Shell ovately oblong, whorls rather convex, transverse^ very 

 finely closely striated, encircled with a single row of conspicuous 

 rather elevated granules; canal very short; whitish, covered 

 with a pale fulvous epidermis. Length, 13'5 mill. 



Habitat unknown. 

 D. EXARATA, Reeve. PL 12, fig. 14. 



Shell granose at the intersection of longitudinal and revolving 

 sculpture, the granules taking a spiral direction, minutely noduled 

 on the periphery ; canal very short, truncated, sinus large ; pale 

 fulvous color, brown-dotted between the ribs. 



Length, 13'5 mill. 



Habitat unknown. 



