438 THE FUR SEALS OF THE PRIBILOF ISLANDS. 



mm. 



Length of base of adipose fin 1'^ 



Posterior end of adipose to caudal 81 



Posterior end of anal to caudal 81 



Length of base of anal "'- 



Anterior end of anal to posterior of ventrals 163 



Height of body in front of dorsal 195 



Height of body at posterior end of adipose and anal 105 



Height of body at beginning of caudal 77. 



Ventrals under anterior third of dorsal. 



Adipose fin over posterior end of anal. 



Ventrals reach about one-half distance to vent. 



Twenty-fonr scales in transverse series from origin of dorsal to lateral line. 



One hundred and twenty-five scales in lateral line. 



Color, silvery, gray on back, black spots obsolete. . 



This species is evidently a close ally of the Atlantic salmon, belonging to the 

 restricted subgenus Sahno-, from Salmo .sa/ar it diflfers in the slightly larger mouth and 

 rather different coloration, and in very little else. 



The names Salmo mykiss Walbaum, Salmo penshinensis Pallas, and Salmo purpura- 

 tuH Pallas, belong to this species. 



28. Salvelinus malma (Walbaum). Ciolet; "Salmon trout." (Plate XLIV.) 



Everywhere very abundant in fresh water streams and along the beaches. Pyra- 

 mid Creek, Captains Harbor, Unalaska, Nikolski, Bering Island, Karluk, Petro- 

 panlski. 



In all these specimens the head is short (4^ to U in length) as compared with 

 siiecimens from farther south (head, Sf to Sf). The latter may be possibly recogni- 

 zable as a distinct subspecies, Salvelinus malma parlri (Suckley). We have not at 

 hand, however, sufficient material to determine this point. 



The species is very common along the Aleutian Islands, as also on Bering Island, 

 where many si)ecimen8 were seen. Specimens taken above the fall in Pyramid Creek, 

 a little tributary of Captains Harbor, Unalaska, are very small— not over 5 inches 

 long — and brightly colored. They are not otherwise different, 



29. Salvelinus kundscha (Pallas). Knndscha. (Plate XLV.) 



h'undscha, Krasrheninnikof, ])e8(;r. Kamtch., 1745. 



Saltno knndscha, Pallas, Iter. App., 706. 



Salmo kuiuhclta, Gmelin, Syst. Nat., 1788. 



Salmo leiicomaenis, Pallas, Zoogr. Hosso. Asiat., Ill, northern and eastern shores of Kamchatka. 



Giinther Cat., VI, 14.5.— Brevoort, N.irr. Exped. to China and Japan, 276, PI. X, fig. 3. 

 Sahelittua leucomivniH, Bean, Proc. U. S. Nat. Mus. 1896, XIX, 382. 

 Sahno ciirUus, Pallas, Zoogr. Rosso. Asiat., Ill, 2.">1, 1811, Knrilc Islands. 



One specimen taken by Mr. Barrett-Hamilton at Petropaulski. It has also been 

 recorded by Dr. Bean as Salmo lencoma;nis, from Petropaulski, where it was taken by 

 Stejneger and Grebnitzki. This interesting species is well known in Kamchatka, 

 and its distinction from Salvelinus malma is very evident. 



One specimen, about 14 inches long, collected at Petropaulski by Barrett-Hamilton 

 agrees with Bean's description above cited, except in tlie longer head, which is con- 

 tained 4| times in length to base of caudal. We present a figure of this specimen. 



30. Cristivomer namaycush (Walbaum). 



Recorded from the Yukon region. 



