98 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
rows of nodules on the ribs, the cords connecting them less conspicuous; 
on the last whorl there are about 14 cords, but only at the shoulder is con¬ 
spicuous, the interspaces are narrower with an occasional intercalary 
thread; axial sculpture of (on the penultimate whorl about 20) narrow 
nearly vertical ribs with subequal interspaces reticulating the spirals, with 
deep interstices, but on the last whorl becoming obsolete; aperture narrow, 
inner lip erased, canal short, straight. Height of shell, 6.5; of last whorl, 
4; diameter, 2.5 mm. (Dali.) 
Type in United States National Museum, No. 208558. Type locality, 
Port Althorp, Alaska, in Granite Cove. 
Range. Granite Cove, Port Althorp, Alaska. 
Lora pribilova Dali, 1919 
Proceedings of the United States National Museum, 56:50; PI. 16, fig. 2. 
Shell white, with a straw-colored periostracum and about six roughly 
sculptured whorls, the apex eroded; suture distinct, axial sculpture of (on 
the last whorl 16) rounded narrow riblets crossing the whorls and obsolete 
on the base; spiral sculpture of (on the spire three, on the last whorl four) 
prominent rounded cords more or less nodose at the intersections with the 
ribs, and between the cords two or three fine threads and a few finer 
striae; the posterior cord forms a shoulder to the whorl; on the canal the 
cords and threads become more uniform; aperture simple, pillar erased. 
Height of shell, 12; of last whorl, 8; diameter, 5.5 mm. (Dali.) 
Type in United States National Museum, No. 225573. Type locality, 
Cape Lisburne, Arctic Ocean. 
Range. Cape Lisburne, Arctic Ocean, to Esteros Bay, California. 
Lora pitysa Dali, 1919 
Proceedings of the United States National Museum, 56:40; PI. 16, fig. 7. 
Shell small, translucent white, with a one-sided subglobular smooth 
nucleus of a whorl and a half, and about four subsequent whorls; suture 
distinct, anal fasciole sloping to a corded shoulder; spiral sculpture begins 
by two strong cords, one of which marks the shoulder and to these are 
added by intercalation until the penultimate whorl has four and the last 
fourteen, not counting the threads on the canal; these are reticulated by 
axial cords of similar size which do not form ribs or nodes, though the 
posterior cord at the shoulder is slightly undulated; anal sulcus obscure, 
aperture simple, inner lip erased, canal short. Height of shell, 5.5; of 
last whorl, 3.5 ; diameter, 2 mm. (Dali.) 
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