62 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Whorls convex, rapidly increasing, smooth or very minutely spirally 
striate, light chocolate color, shining, under a thin olivaceous epidermis, 
speckled and spotted irregularly with white; interior chocolate color, with 
a white band near the base; columella broadly excavated, yellowish brown. 
(Tryon, Manual of Conchology.) 
Type in British Museum. Type locality, California superior. 
Range. Puget Sound to Magdalena Bay, Lower California. Guade¬ 
loupe and Socorro Islands. 
Subgenus Melarhaphe (Miihlfeldt) Menke, 1828 
Littorina scutulata Gould, 1849 
Proceedings of the Boston Society of Natural History, 3:83. Tryon, Manual of 
Conchology, 9: PI. 45, figs. 98-100-1-3. 
Testa parva, ovato-conica, plerumque erosa, castanea vel livida albido 
inordinatim maculata, striis obsoletis cincta; spira anfr. 5, ultimo ventri- 
coso; apertura late ovata; labro acuto, pallido; columella planata, antrorsum 
expansa; fauce livido. Long. %; lat. % poll. (Gould.) 
Faintly striate with spiral impressed lines, olivaceous chestnut or 
chocolate color, including aperture, sometimes not variegated, but usually 
with longitudinal, zigzag, white markings, sometimes broken up into spots, 
and frequently with an articulated white and chestnut band on the periph¬ 
ery. Length 9-12 mm. (Tryon.) 
Type in United States National Museum? Type locality, Puget Sound. 
Range. Kodiak Island, Alaska, to Turtle Bay, Lower California, and 
Socorro Island. 
Subgenus Algamorda Dali, 1918 
Littorina newcombiana Hemphill, 1876 
Proceedings of the California Academy of Sciences, 7:49. Bulletin 112, United States 
National Museum, PI. 5, fig. 5. 
Shell thin, turbinate, with four or five rounded whorls; apex subacute, 
last whorl somewhat inflated, subrimate, with or without three or four 
longitudinal brown bands; aperture ovate, outer lip thin, inner lip ap- 
pressed to the columella and somewhat thickened; suture deep; epidermis 
greenish. 
Operculum with nucleus sub-central with 2y 2 whorls. (Hemphill.) 
Type in Hemphill Collection, Stanford University. Type locality, 
Humboldt Bay, California. 
Range. Known only from type locality. 
Described as Paludinella. 
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