92 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 937. List of Diatomacese from a deep-sea dredging in the Atlantic 

 Ocean off Delaware Bay by the U. S. Fish Commission 

 steamer Albatross. By Albert Mann. 



pp. 303-312. 



P. 938. Description of a new species of cyprinoid fish, Couesius greeni, 

 from the headwaters of Fraser River in British Columbia. 

 By David S. Jordan. 



pp. 313-314. 



P. 939. Note on the wall-eyed pollack, Pollachius chalcogrammits 

 fucensis, of Puget Sound. By David S. Jordan and Charles 

 'H. Gilbert. 



pp. 315-316. 



P. 940. Preliminary report on the molluscan species collected by 

 the United States scientific expedition to West Africa in 

 1889-90. By Robert E. C. Stearns. 



pp. 317-339. 



P. 941. On rare or little-known mollusks from the west coast of North 

 and South America, with descriptions of new species. By 

 Robert E. C. Stearns. 



pp. 341-352, 1 plate. 



P. 942. Scientific results of explorations by the U. S. Fish Commission 

 steamer Albatross. No. XXV. Report on the mollusk- 

 fauna of the Galapagos Islands with descriptions of new 

 species. By Robert E. C. Stearns. 



pp. 353-450, 2 pis. 



P. 943. Scientific results of explorations by the U. S. Fish Commission 

 steamer Albatross. No. XXVI. Report on the pteropods 

 and heteropods collected by the U. S. Fish Commission 

 steamer Albatross during the voyage from Norfolk, Virginia, 

 to San Francisco, California, 1887-88. By James I. Peck. 



pp. 451-466, 3 pis. 



P. 944. Diagnosis of a new California lizard. By Leonhard Stej- 

 neger. 



p. 467. 



P. 945. Description of a supposed new species of Odontophorus from 

 southern Mexico. By Robert Ridgway. 



pp. 469-170. 



P. 946. A subtropical miocene fauna in Arctic Siberia. By William 

 H. Dall. 



pp. 471-478, 1 plate. 



P. 947. Notes on a collection of birds from eastern Nicaragua and the 

 Rio Frio, Costa Rica, with a description of a supposed new 

 Trogon. By Charles W. Richmond. 



pp. 479-632. 



P. 948. Description of a new species of fruit bat, Pteropus aldabrensis, 

 from Aldabra Island. By Frederick W . True. 



pp. 533-534. 



