CLASS GASTROPODA 
263 
apertura dilatata, intus testudineo-violacea, nitida; canali brevissimo, lato, 
emarginato, epidermide tenue, griseo-viridi, ciliata. Long., 33; lat., 22; 
alt. anfr. ult., 26; lat. apert., 14; col. longit. ext., 12 mm. (Middendorff.) 
Shell ovate, deep purple, very short spire, with convex whorls; of 
which the last is much the longest; with sutures abruptly canaliculate; 
with lip spread out; with aperture dilated, within tortoise shell violet, 
dainty; with very short canal, broad, emarginate, thin epidermis grayish- 
green, ciliate. (Translation.) 
Type in Academy of St. Petersburg. Type locality, “Der Tugur-Busen 
und die grosse Schanter-Insel an der Sudkuste des Ochotskischen Meeres.” 
Range. Bering Strait to Straits of Juan de Fuca; also Japan. 
Family COLUBRARIIDAE 
Genus ENGINA Gray, 1839 
Shell ovate-conic; spire sharp, with longitudinal nodulous ribs, decus¬ 
sated by revolving lines; aperture narrow, with several oblique plications 
in front; outer lip rather thick, inflected or callous in the middle, crenu- 
lated within. (Tryon, Structural and Systematic Conchology.) 
Type? 
Distribution. Tropical: Indo-Pacific, Polynesia, Panama, West 
Indies; west coast of North America. 
Engina carbonaria Reeve, 1846 
Shell ovate, attenuated at both ends, transversely striated, longitudi¬ 
nally strongly ribbed, ribs distant, crossed with transverse ridges; varie¬ 
gated with jet black, interior of the aperture bluish-white. (Reeve.) 
Type in Museum Cuming. Type locality 
Range. San Pedro, California, to Panama and the Galapagos Islands. 
Family ALECTRIONIDAE 
Genus ALECTRION Montfort, 1810 (Nassa) 
Spire elevated, whorls glabrous, polished or papillary; inner lip 
spreading; outer lip denticulate, not variced externally. (Tryon, Struc¬ 
tural and Systematic Conchology.) 
Type. N. glans Linn. 
Distribution. World-wide. Fossil: Eocene. 
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