132 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Type in United States National Museum, No. 206152. Type locality, 
Catalina Island, California. 
Range. Known only from type locality. 
Sinum pazianum Dali, 1919 
Plate 92, fig. 10 
Proceedings of the United States National Museum, 56:354. 
Shell small, grayish-white, depressed, with a translucent smooth nucleus 
of a whorl and a half and two subsequent whorls; suture distinct, outline 
oval, axial sculpture of faint incremental lines; spiral sculpture of fine 
incised lines, sometimes close, sometimes with wide interspaces, but barely 
perceptible except with a lens; last whorl produced, body with a slight 
glaze of enamel; pillar lip reflected with an umbilical chink behind the 
reflection, base slightly flattened. Longer diameter, 9; shorter diameter, 7 ; 
height, 2.5 mm. (Dali.) 
Type in United States National Museum, No. 211406. Type locality, 
U.S. Fish Commission Station 2823, off La Paz, Lower California, in 26 l / 2 
fathoms. 
Range. Catalina Island, California, to Panama. 
Genus EUNATICINA Fischer 1855 
Shell umbilicated, oval oblong, thin ventricose; spire sharp; inner lip 
straight, thin anteriorly, with a median callus. (Tryon, Manual of Con- 
chology.) 
Type. Sigaretus papilla Gmelin. 
Distribution. Moluccas, Japan, Philippines, Madagascar, Australia, 
California. 
Eunaticina oldroydii Dali, 1897 
Plate 92, figs. 11, 11a 
Nautilus, 11: No. 8, 85. Bulletin 112, United States National Museum, PI. 14, figs. 1,2. 
Shell large, thin, naticoid, with a short spire and 3-4 inflated whorls; 
color pale brown, livid on the spire, fading to waxen on the base; surface 
sculptured with extremely fine wavy spiral striae; aperture ample, oblique, 
the outer lip thin, a little patulous, the body covered with a thin callus, 
the pillar lip obliquely cut away, wide near the junction with the body, the 
basal part of the margin receding; umbilicus large, pervious, its walls 
covered with a thin, silky, brown wrinkled epidermis. Alt., 35; diameter, 
37 mm. (Dali.) 
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