120 THE NAUTILUS. 



Gultellus grayanus Sowb. (not Dunker?); Cultellus subsulcatus Sowb.; 

 Cultellus belcheri (as of Gray manuscript) Sowb. ; not C. costatus 

 Middendorf nor Sowerby. 



Psammosolen sanctcr.-martluz (Cliemu.) Orbigny. N. Carolina, 

 Bermuda, the Antilles and south to Rio Janeiro. 



Psammosolen cumingianus Dunker. N. Carolina to Texas and 

 Sao Paulo, Brazil. 



West American Species. 



Solen sicarius Gould. Vancouver Island to San Pedro, California. 



So/en rosaceus Carpenter. Santa Barbara, Cal., south to the Gulf 

 of California. 



Solen mexicanus Dall. West coast of Tehuantepec, Mexico. 



Solen (Solena) rudt's C. B. Adams. Panama,. 



" Confounded with S. obliquus Spengl. of the Antilles, by Carpenter 

 and Sowerby." 



Ensis californicus Dall. Monterey, Cal., south to the Gulf of 

 California. 



Siliqua lucida Conrad. Monterey to San Diego, Cal. 



Confounded with the young of S. nuttaUii by Carpenter and Gabb. 



Siliqua media Gray. Okhotsk and Bering Seas northward to the 

 Arctic Ocean at Cape Lisburne. 



Syn. Machczra costata Midd. (not Say) ; S. borealis Conrad. 



Siliqua patula Dixon. Okhotsk Sea, the southern border of Ber- 

 ing Sea and the Gulf of Alaska to Sitka. 



Syn. Solen maximus Wood (not Gmel.); S. gigas Dillw.; S. gran- 

 dis (Hinds' manuscript, as of Gmelin) Dunker; Carpenter; S.splen- 

 dens Chenu. 



Siliqua (patula var.) alta Brod. and Sowb. Bering Sea and Strait. 



Syn. Cultellus costatus Sowb. (not Say). 



Siliqua (patula var.) nuttaUii Conrad. Lituya Bay, Alaska, south 

 to Oregon and Monterey, California. 



Syn. S. californica Conrad, and S. nuttali Sowb. 



The following new species are described : 



Solen mexicanus. Gulf of Tehuantepec. 



Ensis californicus. From 14 fathoms sand, oflfthe Island of San 

 Pedro Martir, Gulf of California. 



Tagelus poegi. Cuba; mouth of Old River, Belize; Greytown, 

 Nicaragua, and Rio Grande do Sul, Brazil. Some scattered notes on 

 Tagelus gibbus Spengler, are also given. 



