NEOTUJOniNUM, VOliUTHARPA. 19T 



B. CANALICULATA, Dall. 



Shell solid, livid white, covered with a strong, dark brown 

 pilose epidermis ; whorls moderately rounded ; suture tleoply 

 channelled; surface of the whorls covered with fine, spiral, 

 thread-like ridges, with still finer ones intervening between them, 

 lightly decussated by the fine but distinct lines of growth, to 

 which the epidermis especiall}' adheres ; the coarser ridges arc 

 about seven in number, between the posterior end of the aperture 

 and the edge of the suture behind it. Whorls five and a half, 

 aperture half as long as the shell ; internall}' polished ; outer 

 edge somewhat thickened; inner. lip callous; columella strongly 

 tM'isted ; canal short, rather wide. 



Length 1-.33 inches, diam. -75 inch. 



Gape Espenhcrfj, Alaska. (One specimen, on the beach.) 



Much less inflated and proi)ortionally longer thnn B. JJalei, 

 which is nearly smooth and has not the channelled suture. I am 

 not acquainted with this species. 



(ienus NEOBUCCINUM, E. A. .S uith. • 



N. Eatoni, E. a. Smith. PI. 77. figs. 357. 3;')8. 



Pallid brown ; shell thin and smooth. Length, 5() mill. 



lu'rcjuelcn. Island, 3-7 fathoms. 



Animal (in spirit) uniform butf color; foot broad in front and 

 somewhat truncated, narrowed posteriorly; head of moderate 

 size, furnished with two rather short tentacles not adjacent at 

 their base; eyes situated on prominences on the outer side of 

 the tentacles towards their bases ; proboscis very long ; siphonal 

 expansion of the mantle thick, of medium length. 



Lingual ribbon very long; rachidian tooth trieuspidate, uncini 

 tricuspidate also, prongs hooked, outer one the largest, the inner 

 rather smaller, the median ver3^ much smaller still and close to 

 the latter. 



The preceding genera, Baccinum and Burcinopnis, are in- 

 habitants of the Arctic sea ; this, of the Antarctic waters. 



(iinu^ VOLUTHARPA, Fischer. 



This little group of mollusks is confined in distribution to the 

 North Pacific Ocean, its metropolis being Japan. Three of the 

 species were originall}- described as BuUia, from which genus it 



