248 MANGILIA. 
tudinal ribs and impressed revolving strive; whitish, with three 
narrow brown bands, one of which appears on the spire-whorls. 
Length, 6 mill. 
West Indies. 
Described and figured by Reeve as WV. trifasciata, Gray, a few 
months later than Adams’ description. J. costata, Gray (Pl. 18, 
fig. 36), is the same species without bands, as first determined 
by Krebs. The latter name being preoccupied by Pennant, Mr. 
EH. A. Smith has recently changed it to decora. Krebs thinks 
that M. quadrilineata, Adams (unfigured), also belongs here. 
M. augovirrata, C. B. Ad. PI. 21, fig. 32. 
Ovately oblong, whorls with narrow shoulder ; longitudinally 
strongly ribbed, ribs close-set, obtuse ; white, orange banded. 
Length, 6 mill. 
West Indies. 
Described and figured by Reeve a few months later, under the 
name of I. luteo-fasciata, and without locality. Adams includes 
revolving striz in his diagnosis; they are not visible on the 
figure. Hutton erroneously identified with this species a New 
Zealand shell, afterwards distinguished as Drillia Sinclairt, 
Smith. 
M. Hornpecxit, Reeve. PI. 26, fig. 67. 
Shell ovate, spire rather short, acute, sutures deep, somewhat 
cavernous, longitudinally ribbed, ribs prominent, transversely 
very minutely striated; white. Length, 10 mill. 
West Indies. 
The following species, apparently of Mangilia (restricted), 
have been described as West Indian, etc.; they are unfigured 
and unknown to me. 
M. brevis, M. biconica, M. vicina, M. multilineata (= M. poly- 
zonata, H. and A. Ad.), M. muricoides, M. dubia, M. fusca, 
and M. candidissima, all of C. B. Adams. Jamaica. 
M. cinctella, Pfeiffer. Cuba. 
M. millestriata, E. A. Smith. St. Thomas, W. I. 
M. inepia, EK. A. Smith. Honduras. 
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