272 MOLLUSCA. 
~ 
Mitra cophina, Goud; Proceed. Boston Soc. Nat. Hist., iii. 171. 
January 1850. Expedition Shells, 72. 
SHELL of moderate size, fusiform, slender, dead ashy white, surface 
longitudinally barred with twenty or more slender, elevated, com- 
pressed, regularly spaced ribs; the interspaces are also barred with 
finer, less elevated, and less distant lines (eight on the penultimate 
whorl), not crossing the long ridges, leaving deeply-excavated, trans- 
versely quadrate impressions in the intervals; spire turreted, of nine 
or ten conical whorls, the last five-eighths the length of the shell, ven- 
tricose at the upper part, but becoming attenuated and forming an 
elongated, contorted beak, with an oblique, elevated varix near its point. 
Aperture not half the length of the shell, narrow, a little oblique, poste- 
rior termination broad and transverse; columella with four folds, the 
two anterior very small, its wall being an erect lamina to the canal. 
Length four-fifths of an inch; breadth three-tenths of an inch. 
Inhabits Singapore. Pzckering. 
The form, size, and colour is like M. suturata, Reeve, but the sculp- 
ture is quite different, that species having no longitudinal ridges, and 
the transverse grooves are described as deep and punctured, and the 
intermediate ridges slightly granose. 
Figures 355, 355 a, two views of the shell. 
Mirra rorata (Gould). 
T. modica, solida, lanceolata, cinerea rubiginoso-marmorata, clathris 
longitudinahbus quadratis ad triginti et stris tenuibus volventibus de- 
cussata: spira elevata, anfractibus novem ad decem plants postice an- 
gulatis ; ultimo cylindraceo anticé sensim attenuato, dimidiam longi- 
tudinis teste superante: apertura angusta, labro acuto, roseo, tredecim 
sulculato ; columella quadri-plicata ; rostro lato oblique reflexiusculo ; 
Sauce incarnata. 
Mitra rorata, Goutp; Proceed. Boston Soc. Nat. Hist., ii. 171. 
January 1850. Expedition Shells, 72. 
