190 DRILLIA, 
upper part, obliquely regularly ribbed; sinus broad; yellowish 
white. Length, 12 mill. 
Habitat unknown, 
D. RosEA, Sowb. PI. 10, fig. 62. 
Strongly plicately noduled, concave around the upper part of 
the whorls; outer lip somewhat wing-like, with a deep posterior 
sinus and a slight anterior one; pinkish brown, aperture rosy. 
Length, 26 mill. 
W. Coast of Central America, 
D. rosonina, Marrat. 
Resembles D. rosea, but is obliquely ribbed, closely striated, 
and uniform rose-color. W. Africa, 
Unfigured. No dimensions given. 
D. acuminata, Mighels. Pl. 12, fig. 20; Pl. 32, fig. 41. 
Shell with a very slight angle on the periphery, with numerous 
small ribs reaching the suture and terminating at a raised 
revolving line on the lower part of the body-whorl ; below this 
line are sometimes revolving strize; livid or chocolate-brown, 
with a white band at the suture, ribs white, aperture brown. 
Length, 10 mill. 
Sandwich Islands ; Indian Ocean (Nevill). 
D. Marier, Crosse. PI. 13, fig. 73. 
Shell olivaceous brown, smooth, with a pair of narrow brown 
revolving lines below the periphery, body-whorl with one or two 
additional colored lines, situated inferiorly, the base with a few 
revolving striz. Length, 10 mill. New Caledonia. 
D. cuavata, Sowb. Pl. 11, fig. 95. 
Shell with a few strong longitudinal ribs, which surmount the 
angulated periphery and reach the sutures; no revolving sculp- 
ture ; outer lip thickened, the sinus large and ascending, aperture 
truncate below ; whitish, the ribs slightly stained with flesh-color 
Length, 13 mill. 
Xipixapt, W. Columbia (Cuming). 
D. pica, Reeve. Pl. 13, fig. 50. 
Shell thick; whitish, irregularly variegated with a few large 
squarish brown spots; upper portion of whorls smooth, concave, 
below the periphery with numerous narrow ribs ; sinus broad. 
Philippines (Cuming); Mauritius (Robillard). 
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