104 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
ribs extending from the shoulder, where they are most prominent, over 
the periphery and obsolete on the base; there are also fairly distinct incre¬ 
mental lines; aperture short, wide, with a feeble anal sulcus and hardly 
differentiated canal; outer lip thin, simple, inner lip erased; throat whitish. 
Height of shell, 9.75; of last whorl, 6; of aperture, 4; diameter, 4 mm. 
(Dali.) 
Type in United States National Museum, No. 220399a. Type locality, 
Adakh Island, Aleutians. 
Range. Adakh Island, Aleutians, to Sitka, Alaska. 
Lora lotta Dali, 1919 
Proceedings of the United States National Museum , 56:47; PI. 14, fig. 4. 
Shell small, white, with a pale, straw-colored periostracum, nucleus 
eroded, four whorls remaining, the general characters resembling those of 
L. surana, but the axial sculpture nearly obsolete, or quite absent from the 
last whorl, the shoulder less accented, and the canal straighten Height of 
shell, 7.5; of last whorl, 6; diameter, 4 mm. (Dali.) 
Type in United States National Museum, No. 210725. Type locality, 
Queen Charlotte Islands, British Columbia. 
Range. Queen Charlotte Islands to San Diego, California. 
Lora sixta Dali, 1919 
Proceedings of the U?iited States National Museum, 56:49; PL 16, fig. 12. 
Shell small, white, with a pale, olivaceous periostracum, of five or more 
whorls (apex eroded); suture distinct; anal fasciole slightly excavated, 
sloping to a shoulder; axial sculpture of (on the last whorl about 20) 
narrow, rounded ribs with subequal interspaces, obsolete on the base, 
slightly nodulose on the shoulder, supplemented by fine, regular, almost 
microscopic, incremental lines; spiral sculpture hardly visible on the ribs, 
of feeble threads with wider, flat interspaces, most evident toward the 
canal; aperture simple, inner lip erased, canal straight. Height of shell, 
8; of last whorl, 6; diameter, 3.5 mm. (Dali.) 
Type in United States National Museum, No. 209235. Type locality, 
off San Diego, California, in 640 fathoms. 
Range. Off San Diego, California, in 359-822 fathoms. 
Lora colpoica Dali, 1919 
Proceedings of the United States National Museum, 56:50, PL 16, fig. 2. 
Shell resembling L. tennissima in sculpture, but shorter, much more 
distinctly shouldered, and subangulate at the shoulder, with traces of axial 
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