132 MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Genus MANGILIA Risso, 1826 
Shell elevated, spire longer than the aperture, longitudinally ribbed, 
spirally minutely sculptured; pillar smooth, outer lip thin, simple, notch 
at the suture, nucleus smooth, short, last turn finely cancellate, no oper¬ 
culum. (Dali.) 
First species, Mangilia costulata Risso. 
Mangilia barbarensis Oldroyd, 1924 
Annals and Magazine of Natural History, scr. 3, 15:395. Arnold, Paleontology of San 
Pedro, California; PI. 7, fig. 9, 1903. 
New name for M. angnlata Carpenter, 1865, preoccupied. 
M. testa parva, rufo-purpurea, vix gracili, epidermide tenui fugaci; 
anfr. nucl. iii., helicoideis, primum laevibus, dein cancellatis, apice mamil- 
lato; anfr. norm, iv., convexis, suturis impressis, in medio spirae obtusan- 
gulatis; costis radiantibus circ. xii., acutioribus; costula spirali circa angu- 
lum, inter costas subobsoleta; tota superficie tenuiter spiraliter crebrisul- 
cata, sulculis sub lente saepius bifidis; apertura pyriformi, canali longiore, 
recto aperto; labro acuto, postice conspicue sinuato; columella baud 
contorta; labro ohsoleto. Long., .35; long, spir., .18; lat., .13 in. (Car¬ 
penter. ) 
Shell small, turreted, elongate-fusiform; apex acute; whorls six, broad 
and angular, angle being slightly posterior to middle; sculpture consists 
of ten prominent, rather sharp, transverse ridges which reach maximum 
prominence on angle of whorls; suture deeply impressed, distinct, aperture 
oblique, narrow, elliptical, drawn out anteriorly into a short, narrow 
canal; outer lip thin; simple, arcuate; inner lip smooth. (Arnold.) 
Type in British Museum? Type locality, Santa Barbara, California. 
Range. Puget Sound to Gulf of California. 
Reeve described a Mangilia angnlata, 1846, and the type locality was 
Manila Bay, Philippines. Carpenter named Mangilia angnlata in 1865 
and the type locality, Santa Barbara, California. 
Mangilia aleutica Dali, 1871 
American Journal of Conchology, 7:99. Proceedings of the United States Natiotial 
Museum, 9; PI. 3, fig. 6, 1886. 
Shell pure white, elongated, acuminated, of seven whorls carinated 
above, though not very strongly. Aperture narrow, long, two-fifths the 
length of the shell; outer lip sharp, thin, strongly flexuous, produced below, 
sinus close to but not on the suture, not very deep or prominent; canal 
one-third as long as the aperture, straight, narrow; columella smooth, 
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