188 DR1LLIA. 



D. EXIGUA, 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. VITTATA, 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 (E. A. Smith). 



Mr. Smith changed the name to P. exquisita, on account of 

 Mangilia vittata, Hinds ; but as JMangilia is generally regarded 

 as a distinct genus from Drillia, there is no occasion for this. 



D. COCCINATA, Reeve. PI. 13, fig. 54 ; PI. 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, 

 occasionally 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. D. pulchella, 

 Reeve (p. 186), is very closely allied. D. laevisulcata, Maltzan 

 (PI. 30, fig. 85), from West Africa, agrees with this species 

 except in its color, which is bluish gray. As only dead shells 

 Vere found in mud, they were possibly discolored. D. rosolina, 

 Marrat (unfigured), described below, also needs to be compared 

 with coccmata. 



D. EBUR, Reeve. PI. 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. 



