GASTEROPODA. PaT/l 
ultimo octantes quinque longitudinis testa, cylindraceo, antice angus- 
tato: apertura angusta ; labro recto, simplici ; columella quadri-plicata, 
sinu stiphonali brevi, viz recurvo. 
Mitra vitellina, Goutp; Proceed. Boston Soc. Nat. Hist., i. 170. 
January 1850. Expedition Shells, 72. 
Suet slender, fusiform, solid, with fine, longitudinal fissures, 
pretty regularly disposed, and with hair-like, revolving strie#, much 
more closely arranged, which, in the fissures, are deeply indented, the 
posterior one being at a considerable distance from the suture, and 
those about the base being much more deeply sculptured. Colour 
pale orange, with an imperfect white vitta adjacent to the posterior 
revolving strie, a second at the anterior third of the last whorl, and 
with the other parts of the shell, slightly mottled with white, except 
the sutural portion. Whorls eight or nine, conical, abrupt at the 
suture, the last about five-eighths the length of the shell, the median 
portion cylindrical, the basal but slightly constricted. Aperture one- 
third the length of the shell, longitudinally narrow, lip mostly parallel 
to the axis, siphonal portion slightly recurved, broad; columella parallel 
to the lip, with four plaits. 
Length an inch and three quarters; breadth seven-twentieths of an 
inch. 
Habitat uncertain, probably Hast Indies. 
An elegant species, about the size of M. subu/ata, having the general 
form and coloration of M. glabra, Sw., and is sculptured more like 
M. impressa, Reeve. 
Figure 352, dorsal and ventral views of the shell. 
Mirra copuina (Gould). 
T. fusiformis, albida, hris volventibus et liris longitudinalibus altiorthus 
ulique reticulata ; areolis interceptis profundis : spira turrita, anfrac- 
tibus novem ad decem planiusculis subtabulatis, ultimo antrorsum in 
rostrum contortum sulito desinente: apertura angusta, flexuosa, 
postice obtusa; columella quadri-plicata, plicis antrorsum minoribus. 
