41 



451 Pecten hastatus Sowerby. 



North Pacific to Japan and Santa Barbara, Cal. 



451 Variety Hindsi Carpenter. 

 Santa Rosa Island (Yates). 

 Synonym of Pecten Hindsi. 



453 Pecten paucicostatus Carpenter. 

 Santa Barbara to San Diego. 



454 Pecten latiauritus Conrad. 

 Monterey to San Diego, Cal. 



455 Neaplysia californica J. G. Cooper 



Santa Cruz to San Pedro, Cal. Santa Barbara (Yates). 

 Synonym of Aplysia californica. 



456 Tornatina carinata Carpenter. 

 Santa Barbara to Panama. 



457 Tornatina cerealis Gould. 

 Monterey to San Diego, Cal. 



458 Cardium corbis Martyn. 



Alaska to Santa Barbara— Kamtschatka. 



459 Kellia suborbicularis Montagu. 



England to Canary Islands and United States — Vancouver 

 Island to Mexico — Panama? Mazatlan. Santa Rosa Island 

 (Yates). 



460 Modiola modiolus Linne. 



Circumboreal — Arctic Sea to Prance and North Carolina — 

 West coast to South America — Circumaustral? New Guinea? 

 Yates considers Santa Barbara as the southern limit of this spe- 

 cies, and as the northern limit of M. capax. R. E. C. Stearns con- 

 sidered M. Americana Leach, capax Conrad, and vulgaris Plem., as 

 synonyms. 



461 Axinaea intermedia Broderip. 

 Monterey to San Diego — South America. 

 Synonym of Glycimeris intermedia. 



461 Axinfea septentrionalis Middendorf. 



Alaska, latitude 64 degrees, to British Columbia. Uramok 

 Island; Sitka; Santa Barbara, fossil (Yates); Santa Rosa Island, 

 southern limit (Yates). 



463 Nucula tenuis Montagu. 



Circumpolar — Finland to Scotland — Greenland to North Car- 

 olina — Arctic Sea to Santa Barbara, Cal. Japan. 



464 Nitidella gouldii Carpenter. 

 Straits of Fuca to San Diego. 



465 Neptunea (Chrysodomus) I/irata Martyn. 



Kodiak Island to Straits of Fuca; Santa Barbara, younsr? 

 (Yates). 



466 Cerostoma foliatum Gmelin. 

 Vancouver Island; Santa Barbara (Yates). 



