198 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
tinct, not channeled; apex somewhat eroded with a small blunt top; 
surface of the whorls delicately sculptured with fine revolving threads, 
four or five to a millimeter, of which about every fourth thread is per¬ 
ceptibly stronger than the other three; these are crossed by still finer, 
sharp, elevated, arcuate, incremental lines, along which the hispidity of 
the periostracum is arranged; pillar white, solid, twisted, funicular dis- 
tally; canal very short, wide; outer lip thin, simple, with a concave-flexu- 
osity behind the periphery; body with a thin white callus. Alt., 42; 
max. diam., 22; long, aperture, 17 mm. (Dali.) 
Type in United States National Museum. Type locality, 121 fathoms 
near the Pribilof Islands, Bering Sea. 
Range. Bering Sea, Pribilof Islands to Alaska in 14-121 fathoms. 
Liomesus ooides Middendorff, 1848 
Bulletin, Academy of St. Petersburg, 7, No. 16:6. Sibirische Reise, 2:326; PI. 8, 
figs. 7, 8. 
Testa alba, crassa, ovato-conica; spira abbreviata; anfractibus con- 
vexiusculis, non plicatis, ad suturas abrupte-canaliculatis, striis longitudin- 
alibus cinctis, quarum intcrstitia incrementi vestigilis tenerrimis decussan- 
tur canali brevi; labio magis minusve calloso; abro crasso; apertura 
mediocriter aperta. Long., 25. (Middendorflf.) 
Shell white, thick, ovately conical; spire abbreviated; with whorls 
slightly convex, not plicate, abruptly canaliculate to the suture, girdled 
with longitudinal striae of which the interstices are cut across by very 
slender vestiges of growth lines; with short canal; lip more or less callous; 
thick; aperture moderately open. (Translation.) 
Type in Academy, St. Petersburg. Type locality, Okhotsk Sea? 
Range. Okhotsk Sea. Fossil: Pleistocene, of Yesso, Hokkaido, 
Japan. 
Liomesus ooides canaliculatus Dali, 1874 
Plate 2, fig. 23 
Proceedings of the California Academy of Sciences, 5:252. Scientific Results of 
the Exploration of Alaska; PI. 4, fig. 4, 1879. 
Shell solid, livid white, covered with strong, dark-brown, pilose epi¬ 
dermis ; whorls moderately rounded; suture deeply channeled; surface of 
the whorls covered with fine, spiral, thread-like ridges, with still finer 
ones intervening between them, lightly decussated by fine, but distinct 
lines of growth, to which the epidermis especially adheres; the coarser 
ridges are about seven in number, between the posterior end of the aperture 
and the edge of the suture behind it. Whorls 5aperture half as long 
as the shell; internally polished; outer edge somewhat thickened; inner 
[198 1 
