50 
596 Vitrinella alaskensis 
Type locality: —Unalaska, Alaska (Dall). 
597 V. (Docomphala) Stearnsi 
Type locality:—-Monterey, Cal. 
598 V. (Docomphala) berryi 
Type locality:—Off Del Monte, Monterey bay, Cal. (S. S. 
Berry). San Diego, Cal. (Mrs. Oldroyd). 
599 Cyclostrema xantusi. Cape San Lucas. 
600 Cyclostrema diegensis 
Type locality:—San Diego, Cal. 
601 Circulus cosmius. Ecuador. 
602 Circulus cerrosensis. Off Cerros Island. 
603 Cyclostremella californica 
Type locality:—-Long Beach, Cal. (Mrs. Oldroyd). Monterey, 
Cal. (Berry). 
604 Scissilabra dalli 
Type locality: —San Diego. Also from San Pedro, Cal.; Mon- 
terey, Cal. 
605 Cooper, J. G.: 
Catalogue of west North American and many foreign shells, 
with their geographical ranges. Printed for the state mining 
bureau of Cal., April, 1894. This catalog included all mollusca 
known at that time to inhabit West America from Sitka to Cape 
San Lucas. Numbers 606-1139 are herewith incorporated, as fol- 
lows: 
606 Acanthinula harpa Say. 
Circumboreal?—south to Maine, Sweden, Siberia, (Alaska?) 
607 Acanthochites avicula Carpenter. 
Catalina Island, Cal.—20 fathoms. Monterey, Cal. 
608 Acantopleura fluxa Carpenter. 
Catalina and Santa Barbara Islands, Cal. 
609 Acila castrensis Hinds. 
Sitka, Alaska, to San Diego, Cal. Puget Sound, 8 fms. (F. L. 
Button. 
Synonymy:—Nucula castrensis. 
610 Acmea atrata Carpenter. 
Margarita bay to Cape St. Lucas, Baja Cal. 
611 Acmea dalliana Pilsbry. 
Gulf of California. 
612 Acmea fascicularis Menke. 
Margarita bay, Lower California, to Gulf of California. 
613 Acmea instabilis Gould. 
Vancouver Island to Monterey, Cal. Sitka, Alaska. 
614 Acmeea mesoleuca Menke. 
Gulf of California (to Panama?) Mazatlan. 
