26 



SHORTER OONTRIBI^TIONS TO GENERAL GEOLOGY, 1919. 



Pleistocene on the Pacific coast as far as the 

 island of Socoito, which will ])e presented in a 

 future puhlication. 



LISTS OF SPECIES. 



The species collected at each locality on the 

 Alaskan coast above indicated will now he 

 enumerated. The collectors' station numbers 

 are given when such numbers appear on their 

 labels. The large numbers are those of the 

 stations as registered in the official records of 

 the United States Geological Survey. 



Otter Creek, 2 miles from the coast near Nome, 50 feet 

 below the surface and at an elevation above the present 

 sea level of about 20 feet. Collected by J. J. V. Beaver, 

 1905. Those marked with an asterisk now live south 

 of the line of floating ice in winter, or, roughly, in about 

 the latitude of the Aleutian Islands. Pliocene. 

 Pecten islandicus MuUer. 



Pecten lioicus Dall (temperate type). Extinct. 

 Pecten kindlei Dall (temperate type). Extintt. 

 *Monia macroschisma Deshaye.';. 

 Cardium sp. (fragment). 



Venericardia crassidens Broderip and Sowerby. 

 Venericardia crebricostata Krause. 

 Macoma sabulosa Spengler. 

 *Panomya ampla Dall. 

 Hemithyris psittacea Gmelin var. alaskana Dall. 

 Balanus sp. (fragments). 

 Station 18a (5074). Second beach, about IJ miles north 

 of Nome, at Center Creek, 32 feet below the surface antl 

 about 20 feet above the present level of the sea. Col- 

 lected by E. M. Kindle, 1S99. Pliocene. 

 *Pecten kindlei Dall. 

 *Monia macroschisma Deshayes. 

 Mytilus edulis Linn^. 

 Venericardia crebricostata Krause. 

 *Astarte rollandi Bernardi. 

 Astarte arctica Gray. 

 Astarte actis Dall. 

 Cardium ciliatum Fabricius. 

 Macoma middendorfhi Dall. 

 Macoma incongrua Martens. 

 Macoma sabulosa Spengler. 

 *Siliqua cf. S. patula Dixon. 



Spisula polynyma var. alaskana Dall. 

 *Mya sp. (aff. M. japonica Jay). 



Saxicava arctica Linn^. 

 *Panomya ampla Dall. 

 Panomya arctica var. turgida Dall. 

 Chrysodomus mesleri Dall. 

 Chrysodomus (fragment). 

 Thais (Nucella) nomeana Dall. 

 Trichotropis insignis Middendorff . 

 Natica sp. 



Natica aff. N. clausa Broderip and Sowerby. 

 Cryptoctenidia magna Dall. 

 *Balanus rostratus (Hoek) alaskensis Pilsbry. 

 *Balanus evermaimi Pilsbry. 



Station 21a (5075). Five miles east of Nome, from the 

 second beach. Collected by E. M. Kindle, 1908. 

 Pliocene. 



*Magasella aleutica Dall. 

 Hemithyris psittacea Gmelin var. alaskana Dall. 

 Station 216 (507(5). Five miles east of Nome, from pros- 

 pect holes in second beach. Collected by E. M. Kindle 

 and R. D. Mesler, 1908. Older Pliocene. 

 Pecten islandicus Miiller. 

 Chrysodomus sp. (fragment). 

 Thais (Nucella) nomeana Dall. 

 Hemithyris psittacea Gmelin var. alaskana Dall. 

 *Magasella aleutica Dall. 

 *Balanus rostratus alaskeni5is Pilsbry. 

 Station 22a (5077). One and one-half miles east of Nome, 

 from prospect holes in' second l)each. Collected by 

 E. M. Kindle and R. D. Mesler, 1908. Pliocene. 

 Pecten islandicus Miiller. 

 *Monia macroschisma Deshayes. 

 Mytilus edulis Linne. 

 Cardium (Serripes) gronlandicum Gmelin. 

 Cardium ciliatum Faljricius. 

 Astarte sp. (fragment). 



Venericardia crassidens Broderip and SowerTiy. 

 Macoma niiddendorffii Dall. 

 Macoma incongrua Martens. 

 Saxicava arctica Linne. 

 *Mya sp. (aff. M. japonica Jay). 

 *Panomya ampla Dall. 

 Buccinum sp. (fragment). 

 Trichotropis insignis Middendorff. 

 Hemithyris psittacea Gmelin var. alaskana Dall. 

 *Balanus rostratus alaskensis Pilsbiy. 

 Station 226 (5078). One-fourth to one-half mile east of 

 Nome, on the second beach, in prospect holes. Col- 

 lected by E. M. Kiadle and R. D. Mesler, 1908. Plio- 

 cene. 



*Monia macroschisma Deshayes. 

 Cardium ciliatum Fabricius. 

 Astarte actis Dall. 

 Macoma incongrua Martens. 

 Macoma middendorfhi Dall. 

 Saxicava arctica Linne. 

 *Panomya ampla Dall. 

 Spisula polynyma Stimpson var. alaskana Dall. 

 Thais (Nucella) nomeana Dall. 

 *Littorina palliata Say. 

 Littorina sp. (aff. L. grandis Middendorff). 

 Cryptoctenidia magna Dall. 

 *Balanus balanoides (linne) Pilsbiy. 

 *Balanus rostratus alaskensis Pilsbry. 

 Station 627. Forty miles up Col ville River from its mouth 

 on the Arctic coast. Collected by F. C. Schrader, 1901. 

 Pliocene. 



Chrysodomus leffingwelli Dall. 

 PjTulofusus schi'aderi Dall. 

 Station 706,7. Peard Bay, about 30 mUes southwest of 

 Point Barrow, from top of high bank. Collected by 

 E. de K. LefRngwell, 1914. Pleistocene (?). 

 Astarte bennetti Dall. 

 Astarte boreal is Schumacher. 

 Astarte leffingwelli Dall. 

 Venericardia crebricostata Krause. 



