ball] new species of shells 149 



groups of five or six", separated by somewhat deeper grooves ; aper- 

 ture large, whitish ; outer lip defective, body and pillar with a wash 

 of callus ; pillar short, straight ; canal wide, deep, recurved, forming 

 a strong rounded fasciole. Lon. of shell, 52; of last whorl, 40; of 

 aperture, 28; maximum diameter, 30 mm. 



Station 5023, on the east coast of Sakhalin, in 75 fathoms. U. S. 

 Nat. Mus., 110,530. 



Perhaps nearest to B. verkruseni Kobelt, but a shorter, wider shell, 

 without the regularly spaced similar ribs and elevated spire of that 

 species. 



BUCCINUM BOMBYCINUM Dall, n. sp. 



Shell small, bulimoid, polished, livid flesh-color, extremely thin, 

 with a subacute spire, thin, closely adherent periostracum and about 

 six whorls ; surface smooth, except for very faint incremental lines 

 and a few, simple, spiral, nearly obsolete lines, which look as if they 

 had been pushed out from the inner side of the whorl with a sharp 

 stylus ; shell not constricted at the suture ; aperture semilunar, outer 

 lip thin, expanded ; throat pinkish, a thin wash of callus on the body ; 

 pillar white, thin, obliquely truncate in front, the axis pervious in 

 the adult ; canal shallow, wide, slightly recurved, forming a slight 

 fasciole; operculum subcircular, nucleus subcentral. Lon. of shell, 

 27; of last whorl, 20; of aperture, 15; maximum diameter, 14 mm. 



Station 5067, in 29 fathoms, on the east coast of Sakhalin Island, 

 Okhotsk Sea. U. S. Nat. Mus., 110,531. 



Allied to B. hydrophanum Hancock and others of that group, but 

 smaller and differing in minor details. 



BUCCINUM LIMNOIDEUM Dall, n. sp. 



Shell thin, elevated, acute, slender, straw-color, with spiral bands 

 of pale purple-brown, most of those on the last whorl narrow and 

 articulated, but probably variable, as in other species, with about 

 eight evenly rounded whorls ; nucleus of two whorls, the first blunt 

 and smooth, the second sharply spirally striated ; subsequent whorls 

 slightly irregularly puckered in front of the suture, but less so on 

 the last whorl ; remaining sculpture microscopic spiral stria?, more 

 or less wavy and reticulated by sharp but microscopic incremental 

 lines ; the striation is fasciculated by recurrent deeper grooves, but 

 to the unaided eye the shell appears almost smooth ; outer lip thin, 

 sharp : throat whitish, a wash of callus on the body and pillar ; 

 columella white, strongly twisted, almost plicate, not pervious ; canal 

 short, well defined, recurved, forming a strong fasciole, with a sharp 



