DRILLIA. 193 
D. APPELIT, Weinkauff. Pl. 10, fig. 75. 
Shell narrower than D. callosa, with more numerous ribs and 
a longer canal ; light ochraceous, indistinctly white-banded. 
Length, 40 mill. 
Habitat unknown. 
D. ruscescens, Gray. PI. 14, figs. 97, 98; Pl. 15, fig. 13. 
Shell deep chocolate-brown, the longitudinal ribs separated 
by wider interspaces, crossed by revolving raised lines, forming 
granules, above the periphery smooth and slightly concave, with 
a raised line next the suture. Length, 19 mill. 
Vest Indies. 
D. solida, Adams, D. cuprea, Reeve (fig. 98), and D. nigres- 
cens, Gray (PI. 15, fig. 13), are synonyms—the latter described 
from a small specimen. WD. nigrescens, Adams — nigrescens, 
Gray, and has priority of publication over that species, as well 
as fuscescens: I think it better not to disturb the well-known 
_ name of the species, as Adams’ description was not accompanied 
by a figure, and could not be positively identified until Adams 
himself subsequently pointed out that it was the same shell as 
that figured by Reeve as nigrescens, Gray. 
D. HARPULARIA, Desmoulins. Pl. 14, fig. 99. 
Chestnut- or chocolate-color, spire more slenderly elongated ; 
canal longer and more compressed than the preceding species ; 
the revolving lines do not form granules on the ribs. 
’ Length, 1 inch. 
Australia. 
Barely distinguishable from the preceding species with the 
aid of the different locality. 
D. Scuininer, Weinkauff. Pl. 12, fig. 28. 
Strongly ribbed below the periphery, smooth and concave 
above it, ribs crossed by spiral striz; yellowish brown, with 
chestnut bands ; canal short and wide, subtruncate. 
Length, 18 mill. 
Zanzibar. 
D. pxrica, Reeve. Pl. 12, fig. 26. 
Dark shining chocolate-colored ; ribs prominently pointed at 
the periphery ; sinus broad and large. Length, 18 mill. 
Habitat unknown. 
