FISHES FROM BERING SEA AND KAMCHATKA. 



35 



Interorbital deeply grooved, with a faint median ridge which extends backward upon the occiput; 

 occipital region slightly swollen, flat; length of snout about equal to diameter of pupil; line teeth on 

 lower jaw and vomer. Scales large, about 25 in number, judging^ from the scars. Dorsal inserted above 

 ventrals; distance from origin of dorsal to adipose fin equal to distance from origin of dorsal to edge 

 of preopercle; origin of dorsal nearer tip of snout than base of caudal by the diameter of the pupil. 

 Anal long, its base li in head. Vent midway between posterior edge of opercle and base of caudal. 



Head 3.6; depth 5.75. Dorsal 8; anal 27; pectoral 14; ventral 8. Eye 2.5 in head. 



CHAULIODONTIDiE. 

 Cyclothone microdon (Giinther). 



One specimen from station 4764, off Yunaska Island, Aleutian chain; depth 1,130 fathoms, but the 

 specimen probably taken at intermediate depth. A careful revision of this group will probably result 

 in a subdivision into a number of local forms. 



Chauliodus macouni Bean. 



List op St.\tions. 



AMMOUYTID^. 

 Ammodytes personatus Girard. 



Numerous specimens were taken at Unalaska. 



GASTEROSTEIDiB. 

 Gasterosteus cataphractus (Pallas). 



Taken at Unalaska, Attn, and Bering Islands and in Avatcha Bay, Kamchatka. 



Gasterosteus microcephalus Girard. 



In a small stream on Attu Island were taken numerous examples of this species, which show no 

 transition to G. cataphractus . 



Pygosteus pungitius (Linnaeus). 



Taken at Bering Island and in Avatcha Bay, Kamchatka. 



Of the 9 specimens collected at Bering Island, 5 have 10 spines in the dorsal, 4 have 11 spines. 

 Forty-two specimens were collected in Avatcha Bay; of these, 4 have 9 spines in the dorsal, 28 have 

 10 spines, 9 have 11 spines, and i has 12 spines. 



Sebastolobus alascanus Bean. 



SCORP^NID^. 



List of Stations. 



Vicinity of Attu Island. 



