FISHES OF ARCTIC ALASKA. 



499 



and less depth to the body than is given by Girard in his original description of A. 

 alascanm. There is bnt little doubt that A. alascanus and A. personatus are the same. 



We can hud no difterence between our specimens and one specimen from Green- 

 land. All are probably identical with Ammodytes tobianus of Europe. 



The following shows the number of fin rays and lateral folds of specimens: 



From Port Clarence, 

 Alaska. 



From Puget Sound. 



Dorsal. 



Anal. 



Lateral 

 fold. 



Dorsal. 



Anal. 



Lateral 

 fold. 



61 

 58 

 56 

 57 

 58 

 53 

 59 

 58 

 58 

 60 



29 

 28 

 28 

 28 

 29 

 26 

 29 

 28 

 27 

 30 



145 

 138 

 140 

 140 

 140 

 136 

 135 

 147 

 145 

 139 



59 

 59 

 59 

 59 

 58 

 57 

 58 

 59 

 57 

 58 



30 

 30 

 31 

 28 

 30 

 29 

 30 

 29 

 29 

 29 



. 138 

 151 

 140 

 151 

 148 

 133 

 149 

 133 

 148 

 143 



From Upemavik, Greenland : Dorsal, 58 ; anal, 30 ; lateral fold, 140. 



17. Myoxocephalus polyacanthocephalus (Pallas). 



We took three specimens of this fish at Chignik Bay, Alaska. They are in no 

 way diiferent from specimens of the same species from Unalaska or Puget Sound. 

 D., X, 14 ; A., 12. D., X, 15 ; A., 12. D., X, 15 ; A., 12. 



18. Myoxocephalus jaok (Cuvier and Valenciennes). 



Specimens of this species were taken at Port Clarence and Grantley Harbor. 

 The number of preopercular spines varies; in the young there are four, in older 

 specimens the third spine from the top may be only a tubercle or entirely wanting. 

 In most of the specimelis the caudal has two narrow, vertical wavy bands on its 

 posterior half; in one of the specimens the color on the caudal shows no tendency to 

 form in bands. 



Our specimens show the following number of spines and rays: 



Dorsal. 



Anal. 



Pectoral. 



IX 15 



14 



18 



X 15 



13 



18 



IX 15 



14 



17 



IX 16 



14 



18 



IX 15 



12 



18 



19. Myoxocephalus verrucosus (Bean). 



Type locality: Plover Bay, Siberia. 



We obtained seven specimens of A. verrucosus: four at Kings Island, two at Port 

 Clarence, and one at Grantley Harbor. We have compared them with specimens 

 taken by the Albatross on Bristol Bay (Eep. U. S. Fish Comm., 1896, 421), and these 

 have in turn been compared by Dr. Bean with the type of the species. Six of our 

 specimens have eleven dorsal spines; the other, ten. In the sixteen specimens taken 

 by the Albatross only one has eleven dorsal spines; the rest have ten. In our speci- 

 mens the fins are a trifle larger and the maxillary slightly longer. 



