204 DRILLIA. 
D. opLiquicosTaTA, Reeve. PI. 12, fig. 12. 
Longitudinal ribs oblique, narrow, a little waved, obtusely 
pointed on the periphery ; a few revolving striae 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. Sinensis, Hinds. Mery Pros 
D. aquatiuis, 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. patnriatTa, Reeve. PI. 12, fig. 15. 
Shell ovately oblong, whorls rather convex, transversely 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. 
