188 DRILLIA. 
D. exiaua, Hombr. et Jacq. PI. 9, fig. 39. 
Shell not adult, composed of seven whorls, brownish, with 
distant, large white tubercles on the periphery. Length, 10 mill. 
/ Torres Sts., Australia. 
Described from a single specimen. It may be a young shell 
of the stumpy form of D. Angasi, Crosse. 
D. virratTa, Reeve. PI. 9, fig. 44. 
Whorls slightly concave above the periphery, which is tuber- 
culate, with two or three inferior rows of smaller tubercles ; 
yellowish white, with a chestnut band occupying the shoulder 
of the whorls. Length, 15 mill. 
Philippines (EK. A. Smith). 
Mr. Smith changed the name to P. exquisita, on account of 
Mangilia vittata, Hinds; but as Mangilia is generally regarded 
as a distinct genus from Drillia, there is no occasion for this. 
D. coccinaTa, Reeve. Pl. 13, tig. 54; Pl. 30, fig. 85. 
Whorls smooth or obsoletely striate, concave around the upper 
part, plicately nodose on the periphery ; pink-white, stained with 
rose-color between the nodules, and sometimes below them, 
oceasionally faintly banded with rose on the lower part of the 
body-whorl. Length, 12-15 mill. 
West Indies. 
Occasionally the color varies to a pinkish brown, and I have 
before me a pure white variety from Yucatan. WD. pulchella, 
Reeve (p. 186), is very closely allied. D. levisulcata, Maltzan 
(Pl. 30, fig. 85), from West Africa, agrees with this species 
except in its color, which is bluish gray. As only dead shells 
Were found in mud, they were possibly discolored. D. rosolina, 
Marrat (unfigured), described below, also needs to be compared 
with coccinata. 
D. EBUR, Reeve. Pl. 13, fig. 56. 
Shell white, strongly nodulosely plicate, obsoletely spirally 
striate; pure white. Length, 17 mill. 
West Indies. 
Described by Reeve from specimens in the Cumingian col- 
lection, without locality. Some of these are before me, and on 
comparison with shells from St. Thomas and St. Croix, W. I., 
show no differential characters. The nearest species is D. 
