172 Nichols — A Small Collection of Alaska Fishes. 



Salvelinus malma. 



WESTERN CHARR. 



Ptarmigan Creek, Kenai Peninsula; Cooper Creek; Bear Creek, near 

 Seward; Juneau Creek, tributary of Kenai River; Chilkoot Lake. 



Gasterosteus cataphractus. 



ALASKA STICKLEBA< K. 



Chilkoot Lake; Seward; Bear and Grouse Creeks, Kenai Peninsula. 



Anoplopoma fimbria. 



BLACK COD. 



One specimen, Seward, August 21; two specimens, Seward, August 24. 



Hexagrammos octogrammus. 



ALASKA GREENLING. 



One specimen, Unalaska Harbor, August 5. 



Cottus asper. 



PRICKLY BLOB. 



Head of Chilkoot Lake. 



Cottus cognatus. 



NORTHERN BLOB. 



The collection contains one specimen from Cooper Creek, obtained by 

 Mr. John N. Cobb, which is identified as Cottus cognatus Richardson. 

 Careful study shows it to be the same as those referred to this species by 

 Evermann and Goldsborough, 1907.* The specimen has dorsal vm-16; 

 anal L2; longest ray of pectoral about equal to head, 3.7 in length; 

 ventral L.6 in head, and 5.2 in length; first dorsal blackish with a 

 whitish tip. 



Leptocottus armatus. 



SMOOTH CABEZON. 



Several small specimens collected by Mr. John N. Cobb from a small 

 pool alongside the Alaska Central Railway, about one mile from the 

 wharf at Seward, Alaska, August 21, show an increased average number 

 of vertical tin rays. Examination of specimens from other points along 



the coast shows that the tin rays decrease southeastward. The type of 

 the species from San Francisco is distinctly a southern fish, and has 

 I) \ ii— 1 7, A 16. It is then possible to describe a northern race. The point 

 where the line should be drawn between it and the southern one must 

 remain purely a matter of personal opinion, and there seems to be no 

 advantage in recording this interesting geographic variation in nomen- 



*Evermann, Barton W. and Goldsborough, Edmund L. The Fishes of Alaska, L907. 

 Hull. Bur. Fish., \.\vi. 307. 



