NO. 2295. A^iJW NORTH PACIFIC MOLLUSKS—DALL. 299 



VOLVLTLELLA CALLICERA, new species. 



Shell minute, involved, white, with a short spine at the apex, sub- 

 cylindrical, almost equally attenuated at both ends, smooth and pol- 

 ished, the outer lip slightly falling short of the end of the spine, 

 laterally straight, rounding gently into the pillar lip in front; aper- 

 ture not quite as long as the shell, the body polished, a slight thick- 

 ening on the pillar lip; length, 3.5; diameter, 1 mm. U. S. Nat. 

 Mus. Cat. No. 194976&. 



Tyx>e-localiiy. — U. S. Fish Commission station 2813, off the Gala- 

 pagos Islands, in 40 fathoms, coral sand. 



SCAPHANDER WILLETTI, new species. 



Shell small, yellowish white, of about four whorls, the apex sunken 

 but exposed in a pit bounded by a sharp carina, the shell wider 

 anteriorly; surface with faint incremental lines crossed obliquely by 

 minute vermicular sculpture, which is niore nearly spiral about the 

 middle of the shell and visible only imder a lens; aperture narrow 

 behind, wider and produced in front, the edge of the outer lip pro- 

 duced to form the apical carina, laterally straight and rounded to the 

 pillar in front; umbilical region covered with a smooth layer of enamel, 

 pillar concave, axis twisted; height of shell, 12.5; maximum diameter, 

 7; diameter at apex, 2 mm. U. S. Nat. Mus. Cat. No. 216405. 



Tyj^e-localii'y.—ForTGster Island, Alaska; George Willett. 



DIAPHANA BRUNNEA, new species. 



Shell small, reddish brown, thin, with a small subglobular nucleus 

 and about tliree whorls, separated on the flattish summit by a rather 

 deep suture; the last whorl rather large, swollen, widest in front; 

 surface smooth; aperture not quite as long as the shell, narrow 

 behind, expanded in front; outer lip thin, nearly straight, rounding 

 into the pillar lip which is reflected over but does not close a narrow 

 umbilical chink; inner lip thinly glazed, the axis not gyrate; height 

 of shell, 5; diameter, 3.5 mm. U. S. Nat. Mus. Cat. No. 208718. 



Type-locality. — Harbor of St. Paul, Kodiak, Alaska; in 15 to 20 

 fathoms, gravelly bottom. Collected by W. H. Dall. 



DIAPHANA CALIFORNICA, new species. 



Shell translucent and whitish, thin, the brown soft parts showing 

 through, subcylindric, the nucleus minute, globular, with about three 

 subsequent whorls ; the spire blunt with the whorls rounded narrowly 

 above a deep suture; surface smooth except for faint incremental 

 lines, polished; aperture as long as the shell, posterior sulcus sm_all, 

 outer lip thin, sharp, straight, axis imperforate, pillar lip thin, body 

 hardly glazed; height, 4.5; diameter, 2.5 mm. U. S. Nat. Mus. Cat. 

 No. 130561. 



