CLASS GASTROPODA 
221 
Range. Off Pigeon Point and Monterey Bay, California, in 60-822 
fathoms. 
Colus pulcius Dali, 1919 
Plate 9, fig. 1 
Proceedings of the United States National Museum, 56 : 318 . 
Shell of moderate size, of about six rounded whorls, the apex eroded, 
shell substance of a pale livid brown, covered by an olivaceous perios- 
tracum, the suture distinct and deep; axial sculpture of uniform fine 
silky incremental lines; spiral sculpture of uniform flattened spirals sep¬ 
arated by narrow grooves, about twenty-seven to thirty spirals on the 
penultimate whorl; aperture ovate, outer lip (immature?) slightly crenu- 
lated by the external sculpture, inner lip erased, brownish, pillar white, 
straight; canal short, wide, deep, forming a well-marked fasciole. 
Height of shell, 38; of last whorl, 26; of aperture, 18; diameter, 17 mm. 
(Dali.) 
Type in United States National Museum, No. 223700. Type locality, 
Arctic Ocean north of Bering Strait. 
Range. Known only from type locality. 
Colus halimeris Dali, 1919 
Plate 8, fig. 7 
Proceedings of the United States National Museum, 56 : 320 . 
Shell small, whitish with a yellow-brown periostracum and five whorls, 
including a swollen subglobular nucleus, spire otherwise rather acute, 
the whorls moderately rounded; suture distinct, not appressed; spiral 
sculpture of numerous, fine, shallow, squarish grooves, separated by 
wider flattish interspaces, these covering the whole surface; axial sculp¬ 
ture of faint incremental lines; aperture ovate, outer lip thin, simple, 
body erased, pillar short, twisted; canal short, wide, recurved. I-Ieight 
of shell, 21; of last whorl, 15; of aperture, 11; diameter, 10 mm. (Dali.) 
Type in United States National Museum, No. 207192. Type locality, 
United States Fish Commission Station 4248 in Eastern Passage, near 
Stikine River, southeast Alaska. 
Range. British Columbia to San Diego, California, in 60-822 fathoms. 
Colus trombinus Dali, 1919 
Plate 8, fig. 6 
Proceedings of the United States National Museum, 56 : 321 . 
Shell small, short, rotund, with about five whorls, the apex distinct 
not appressed; axial sculpture of fine, regular, almost miscroscopic, in- 
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