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MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Family AKERIDAE 
Genus HAMINOEA Turton, 1830 
Shell thin and fragile, unicolored, corneous, yellowish or greenish, 
covered with a thin cuticle, globose, ovate or cylindric-oval, the spire 
sunken and concealed, vertix concave, imperforate or minutely perforate; 
body whorl large; aperture as long as the shell, broadly rounded below, 
narrow above; columella simply concave, thin, its edge narrowly reflexed, 
showing a slight fold where it joins the body of the shell; lip retreating 
above, but not distinctly sinused. 
Type. Bulla hydatis Linnaeus. 
Distribution. Europe, West Atlantic, West Indies, west America, 
Japan, China, Polynesia, Australia, New Zealand. 
Haminoea virescens Sowerby, 1833 
Genera of Shells, Bulla, fig. 2. 
Shell open, subpyramidal, patulous, green, semipellucid, contracted 
above the middle, elevated above the spire, acuminated, very minutely 
transversely striated; aperture anteriorly largely expanded; columella very 
obliquely arched. Alt., 14, diam., 10mm. (Sowerby.) 
Type in British Museum. Type locality, Pitcairn’s Island. 
Range. Santa Barbara, California, to Puerto Libertad, Mexico. 
Pleistocene: San Pedro; Pliocene: Caloosahatchie beds, Florida. (Dali.) 
Haminoea vesicula Gould, 1855 
Pacific Railroad Surveys, Appendix, 5:334; PI. 11, fig. 29. 
Shell small, fragile, ovate-globose, pale greenish-yellow; body of the 
shell small, truncate at the summit; outer whorl large; aperture about 
twice the length of the body of the shell, and projecting above it, broadly 
rounded both posteriorly and anteriorly; outer lip indexed at the middle; 
pillar profoundly arcuate, with a narrow delicate callus. Length, 3.10; 
breadth, 1.5 in. (Gould.) 
Type in United States National Museum. Type locality, San Diego, 
California. 
Range. Vancouver Island to Gulf of California. 
Haminoea olgae Dali, 1919 
Plate 1, fig. 11 
Proceedings of the United States National Museum, 56:300. 
Shell large, thin, very light yellowish-green or reddish-brown, inflated, 
with the outer lip rising high above the sunken and impervious spire; the 
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