76 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
whorl of adult specimens; suture narrowly corded and spotted; aperture 
chocolate within. (Tryon, Manual of Conchology .) 
Type in British Museum. Type locality, Santa Barbara, California. 
Range. Monterey, California, to Cerros Island, Lower California. 
This was described as Drillia moesta by Carpenter. 
Pseudomelatoma torosa Carpenter, 1865 
Journal de Conchyliologie, 13:145. Tryon and Pilsbry, Manual of Conchology, 6: 
PI. 14, fig. 93. 
Testa acuminata, laevis, aurantio-fusca, epidermide aurantio-olivacea 
induta; anfr. nucleosis P—(detritis) ; normalibus 7 tumidioribus, suturis 
planatis; serie una tuberculorum validorum, subrotundatorum, anfractu- 
penultimo 8, anfr. ultimo baud obsoletis; regione sinus parvi, rotundati 
paulum excavata; regione suturali haud sculpta; canali longiore; columella 
recta; labio tenui; labro acuta, postice sinuato. Long., .95, long, spir., .55 ; 
lat., .3, poll. (Carpenter.) 
Whorls rounded, olivaceous, with one row of strong bosses through¬ 
out; no posterior knobs. (Carpenter.) 
Type in British Museum. Type locality, Monterey, California. 
Range. Monterey to San Diego, California. 
This was described as Drillia torosa by Carpenter. 
Pseudomelatoma torosa aurantia Carpenter, 1865 
Journal dc Conchyliologie, 13:145. 
D. torosae simili, sed aurantia; linea suturali expressa; interdum 
spiraliter sculpta. Long., .6; long, spir., .32; lat., .28 poll. 
Orange, with sutural riblets and faint spiral sculpture. (Carpenter.) 
Type in United States National Museum. Type locality, San Diego, 
California. 
Range. Monterey, California, to Mazatlan, Mexico. 
This was described as Drillia torosa aurantia by Carpenter. 
Genus CRASSISPIRA Swainson, 1840 (Drillia) 
Shell somewhat claviform, tuberculated; scarcely any anterior canal ; 
internal lip with a thick posterior callus; external lip thick within. (Tryon, 
Manual of Conchology.) 
Type. Pleurotoma bottae Valenciennes. 
Distribution. World-wide; low-water—100 fathoms. Fossil: Cre¬ 
taceous. 
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