FISHES OF ARCTIC ALASKA. 



499 



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

 C'lascanus. There is bat little doubt that .4.. alaseanus and A. personatus are the same. 



" e can hnd no difference between our specimens and one specimen from Green- 

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



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



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



17. Myozocephalus polyacanthocephalus (Pallas). 



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

 way different 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. Myozocephalus jaok (Cuvier and Valenciennes). 



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

 The number of preopercular spines vaHes; 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 specimens 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: 



19. Myozocephalus 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 Hafbor. We have compared them with specimens 

 taken by the Albatross on Bristol Bay (Bep. 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 flns are a trifle larger and the maxillary slightly longer. 



