136 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Lamellaria stearnsii orbiculata Dali, 1871 
Plate 92, figs. 4, 5 
American Journal of Conchology, 7:122; PI. 15, figs. 2, 3. 
Shell resembling the last ( L. stearnsii ); of two whorls and a half; but 
larger than L. stearnsii; whorls more inflated, aperture very oblique, suture 
deeper, spire more elevated and proportionately larger, columella rather 
thicker and more drawn out. Lat., 34; long., .32; alt., .24 in. (Dali.) 
Type in United States National Museum. Type locality, Monterey 
Bay, California. 
Range. Sannakh Islands, Alaska, to Gulf of California. 
Lamellaria diegoensis Dali, 1885 
Proceedings of the United States National Museum, 8:538; PI. 24, figs. 1, 2, 3. 
Shell calcareous except the immediate margins of the aperture, grayish 
waxen white, slightly iridescent with a mucilaginous polish like dry glue 
inside and out, somewhat malleated, with indications of the lines of growth 
by obscure slightly elevated transverse waves and faint irregular spiral 
tracings; three-whorled, very much inflated, though the form varies 
slightly between individuals and probably between the sexes; nucleus small, 
smooth; suture deep, not channeled; spire pervious from below; columella 
less calcareous than the shell in general, without callus or any thickening, 
twisted into an open spiral, continuous with the outer lip in front only; 
aperture very oblique, subquadrate. Alt., 15; max. lat., 17; long, of aper¬ 
ture, 12; lat. of aperture, 10 mm. (Dali.) 
Type in United States National Museum. Type locality, False Bay, 
near San Diego, California. 
Range. San Pedro and the islands to San Diego, California. 
Lamellaria digueti Rochebrune, 1895 
P.—Corpus rotundato ovatum, turgidum; pallio ovato, antice subtrun- 
cato, marginibus undatis; latis; pede subangusto, circulariter crenulate; 
regione buccali proboscidea; tentaculis duobus, rotundatis canaliculatis; 
branchiis subabsconditis; superne miniaceum; inferne albo luteum. Long., 
0.022; lat., 0.016; Crass., 0.012 mm. (Rochebrune.) 
Type in Museum, Paris. Type locality, Mogote, Baie de la Paz. 
Described as Plenrobranchus digueti. 
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