100 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Lora grippii Dali, 1908 
Plate 7, fig. 6 
Nautilus, 21:137. Bulletin 112, United States National Museum; PI. 3, fig. 3. 
Shell small, straw-color or pale brown with occasional spiral bands of 
darker brown, or all brown; six-whorled, of which the first whorl and a 
half are white, polished, smooth and turgid, the subsequent portion of the 
shell having a dull surface; earlier whorls with the periphery nearer the 
anterior suture, the whorl behind the periphery somewhat flattened and 
compressed, crossed by low obscure riblets, about a dozen on the fourth 
whorl, which become obsolete later; the whorl in front of the periphery 
shows no axial sculpture; the whole whorl is spirally sculptured with nar¬ 
row sharp incised lines, one dividing the space behind the periphery, and 
about five in front of the periphery on the penultimate whorl; on the last 
whorl between the periphery and the siphonal fasciole there are about 
twelve of these lines, though they probably vary in number with the in¬ 
dividual, while the incremental lines are moderately conspicuous; outer lip 
thin, simple; pillar lips with a small deposit of white callus; aperture nar¬ 
row, lunate; canal very short, wide, with an inconspicuous fasciole. Length, 
9; of spire, 5; of aperture, 4; maximum diameter, 3.5 mm. (Dali.) 
Type in United States National Museum. Type locality, off San 
Diego Bay. 
Range. Catalina Island to Todos Santos Bay, Lower California. 
Lora pleurotomaria Couthouy, 1838 
Boston Journal of Natural History, 2:107; PI. 1, fig. 9. 
Shell fusiform, elongated, tapering to an acute point, of an uniform 
dark fawn-color, sutures distinct, whorls seven to nine, covered with 
rounded undulating ribs or plaits, to the number of eighteen upon the 
lowest, alternating with each other at the sutures, and most prominent on 
the superior whorls; in some instances these folds become obsolete about 
midway on the body-whorl, which is nearly half the length of the shell, 
with delicate, transverse striae near its middle; in some individuals these 
striae are apparent on all the whorls; outer lip trenchant, smooth, internally, 
the edge forming a regular outward curve; a slight compression is per¬ 
ceptible about its middle portion; columella arcuated superiorly, its inferior 
third inclining, rather abruptly, to the left; aperture an elongated oval, 
terminating in a brief sub-ascending canal. Long., 16/20; diameter of last 
whorl, 11/40 in. (Couthouy.) 
Type in Boston Society of Natural History. Type locality, Massachu¬ 
setts Bay, deep water. 
Range. Nunivak Island, Bering Sea to Puget Sound. Also Atlantic. 
f 100] 
