134 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
simple, anal sulcus wide and shallow, outer lip arcuate, canal straight. 
Height of shell, 18; of last whorl, 12; diameter, 6 mm. (Dali.) 
Type in United States National Museum, No. 220348. Type locality, 
Bering Sea, near Nunivak Island. 
Range. Known only from type locality. 
Mangilia eriopis Dali, 1919 
Proceedings of the United States National Museum, 56: 67; PI. 23, fig. 1. 
Shell small, white, polished, having a nucleus with an oblique smooth 
small apex and about one whorl, the latter part spirally striated, and about 
six and a half subsequent whorls; spire acute, slender, the whorls mod¬ 
erately rounded, the suture distinct, not appressed; spiral sculpture of a 
few obscure threads on the back of the canal and on the apical whorls; 
axial sculpture of (on the last whorl, about 15) sigmoid ribs, most prom¬ 
inent at the shoulder, feeble over the anal fasciole and on the base; aper¬ 
ture narrowly ovate, anal sulcus shallow and wide, beginning at the suture; 
outer lip produced, thin and sharp; inner lip and pillar with a thin wash of 
enamel; pillar straight, attenuated in front, canal short and narrow. 
Height of shell, 13.5; of last whorl, 7.5; diameter, 5 mm. (Dali.) 
Type in United States National Museum, No. 216411. Type locality, 
Forrester Island, Alaska. 
Range. Forrester Island, Alaska, to Queen Charlotte Islands. 
Mangilia constricta Gabb, 1865 
Proceedings of the California Academy of Sciences, 3: 184. 
Shell white, solid, smooth, subfusiform; whorls seven, suddenly con¬ 
stricted at the upper portion, near the suture; suture impressed; body 
whorls rapidly expanded below the constriction; aperture wide, columel- 
lar lip encrusted; canal short; outer lip acute, prominent in the middle; 
posterior sinus deep, angular above and adjoining the suture. (Gabb.) 
Type in State Geological Survey, Survey Cabinet, Mollusca, No. 1055. 
Type locality, Santa Catalina Island, in 80 fathoms. 
Range. Known only from type locality. 
This was described as Clathurella constricta Gabb. 
Mangilia granitica Dali, 1919 
Proceedings of the United States National Museum, 56:67. 
Shell, small, waxen white, darker on the pillar, with two nuclear and 
about five subsequent whorls; nucleus flat-topped, the first whorl with 
one strong keel, the second with three, the suture is laid on the anterior 
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