48 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Type in Paris Museum. Type locality, near Santa Barbara, California. 
Blainville gives for type locality “Des iles Sandwich,” which is a mistake 
or his shell was a ballast one. 
Range. Puget Sound to San Diego, California, and Socorro Island. 
Acanthina spirata aurantia Dali, 1908 
Proceedings of the United States National Museum , 34:248. 
Shell smaller than the typical, with the interspaces of the spiral 
threads prettily lamellose axially and more or less articulated with 
blackish-brown small spots; color orange-yellow. Interior of the outer 
lip thickened and with six or seven well-marked denticulations. Length, 
18 mm. (Dali.) 
Type in United States National Museum, No. 199893. Type locality, 
San Pedro, California. 
Range. San Pedro to Newport, California. 
Acanthina paucilirata Stearns, 1871 
Conchological Memoranda , No. 6:1. American Journal of Conchology; PI. 14, fig. 16. 
Shell moderately elevated, whorls four to six; body whorl four-fifths 
the total length, angulated above and excavated between the angle and 
the suture; a sharp groove behind the tooth. Upper whorls canalicu- 
lated, nucleus smooth. Aperture elongate, purple-brown in the throat; 
outer lip sharp, yellowish, internally denticulated, with a prominent tooth 
at its outer edge. Columella purple, canal short, umbilicus nearly covered 
by the columellar callus. Siphonal fasciole strong. Externally painted 
with longitudinal broad-black and narrow-whitish streaks, interrupted 
by the white dental groove and three or four, narrow, yellowish, revolving 
carinae, which, except the keel, are inconspicuously elevated. Long., .55; 
lat., .33 in. (Stearns.) 
Type in United States National Museum. Type locality, Coronado 
Islands, off San Diego, California. 
Range. San Pedro, California, to Cerros Island, Lower California. 
Subgenus Acanthina s.s. 
Acanthina lugubris Sowerby, 1822 
The Genera of Recent and Fossil Shells, Monoceros, fig. 3. 
Mon. testa ovata, subventricosa, anfractibus costis tribus vel quaternis 
rudis cingulatis, costis hie illic tumidis, inciso-striatis, interstitiis lacuno- 
sis, aperturae fauce denticulata, dente marginali longissimo incurvo; fusca, 
maculis flammulisve nigris variegata, columella et aperturae fauce pur- 
pureo-fuscis. 
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