260 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Buccinum ovulum Dali, 1894 
Proceedings of the United States National Museum, 17:707; PI. 30, fig. 6. 
Shell small, thin, of about four and a half or five whorls; surface 
smooth, or with faint irregular spiral threads mostly obsolete; covered 
with a vernicose adherent olive-green epidermis; substance of the shell 
livid pinkish-purple, with a white margin to the pillar and aperture; 
last whorl much the largest; suture deep but not channeled; nucleus 
eroded in all the specimens; pillar nearly straight, thin, with a deep, 
very short, recurved canal; body sometimes with a thin wash of yellow¬ 
ish callus; operculum small, nearly circular, the nucleus subcentral, surface 
of attachment fan-shaped, reflected by a depression in the concave outer 
surface. Length of shell, 25; max. diameter, 20 mm. (Dali.) 
Type in United States National Museum, No. 106997. Type locality, 
Station near Amukhta Pass, Aleutians, in 248 fathoms. 
Range. Amukhta Pass, Aleutian Islands. 
Buccinum aleuticum Dali, 1894 
Plate 15, fig. 2 
Proceedings of the United States National Museum, 17 :706; PI. 27, fig. 7. 
Shell thin, six whorled, covered by a thin, sparsely pilose, dehiscent 
epidermis; of a livid-pinkish color with a white pillar and margin to 
the outer lip and a dark-chestnut nucleus; sculpture of extremely fine, 
regular, close-set grooves, with equal or wider interspaces, regularly 
spaced on the last, but tending to pair on the earlier whorls; spire short, 
rather pointed; whorls full; suture deep, but not channeled; aperture 
moderate; pillar with a white callous ridge incurved upon it; siphonal 
distinct, bounded by a groove behind; outer lip slightly thickened, hardly 
reflected; throat livid brown; operculum small, subcircular with a sub¬ 
central nucleus and fan-shaped scar of attachment. Length of shell, 35; 
max. diam., 21 mm. (Dali.) 
Type in United States National Museum, No. 122591. Type locality, 
Station 3219, south of Unimak Island, Aleutians. 
Range. Known only from type locality. 
# 
Buccinum chishimanum Pilsbry, 1904 
Nautilus, 18:87. Proceedings, Philadelphia Academy of Natural Sciences, 1905; PI. 3, 
fig. 20. 
Shell ovate, rather thin but moderately solid, yellowish olive-green, 
the principal spiral ribs typically red-brown with light spots. Spire slate- 
blue or ashy-purple. Whorls six, the apex slightly mammillar and smooth, 
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