184 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Epidermis dark brown, whitish or livid beneath; surface smooth ex¬ 
cept several incised striae near the base. Length, 20 mm. (Tryon, Manual 
of Conchology.) 
Type in Museum Cuming. 
Range. Farrallon Islands, California, to San Bartolome Bay, Lower 
California. Fossil: Pliocene, San Pedro, California. 
Mr. Cuming gives the type locality as west coast of Africa, which 
must be a mistake. 
This was described as Pseudoliva. 
Genus PYRULOFUSUS Morch, 1869 
Shell large, relatively thin, with a very short spire and large body 
whorl, usually sinistral but with rare dextral individuals; nucleus very 
large, smooth, flat-topped, infolded with an apical dimple, subsequently 
spirally sculptured, with obscure axial folds; periostracum thin, dehiscent; 
aperture ample, the outer lip expanded and thickened, the body and pillar 
enameled, often brightly colored; the canal very short, shallow and wide, 
hardly incurved, and with no evident siphonal fasciole; operculum much 
smaller than the aperture, rounded-quadrate with apical nucleus: radula, 
chrysodomoid but rather irregular, the rhachidian tooth in the typical 
species tricuspid; the laterals with two large terminal cups, the median 
cusp of the central tooth variable. (Dali.) 
Type. Fusus deformis Reeve. 
Distribution. North Pacific, Arctic, North Atlantic. 
Pyrulofusus deformis Reeve, 1847 
Conchologia Iconica, Fusus, fig. 45. 
Shell ovate, rather thin, ventricose, sinistral, spire papillary, depressed; 
whorls transversely very finely striated, obliquely tubercularly swollen 
beneath the sutures, aperture very large. (Reeve.) 
Length, 3 in. (Tryon, Manual of Conchology .) 
Type in Musum Cuming. Type locality, Spitzbergen. 
Range. Arctic Ocean and south to the Shumagin Islands, Alaska; 
circumboreal. 
Pyrulofusus harpa Morch, 1858 
Plate 29 
Novitatcs Cotichologicac Mollusca Marina, 5; PI. 1, figs. 3, 4. 
Testa sinistrosa ovata, sordide caeruleoque albidanet rufescente, in apice 
obtusa; anfractibus quinis sutura profunda divisis, transversim sulcatis, 
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