16 . Sebastodes introniger (Gilbert) 



Two adults (male 387 mm and female 515 mm) were caught at Bering Id. with 

 Sebastolobus alascanu s at station 70 (59) . 



DXm, 13-1/2-14-1/2, A III, 7-1/2. P 19. LI 32-33, gill rakers 7-8 plus 20 



4 plus 15 



Occipital ridges parallel and long, about 1/2 diameter of orbit, with spines 

 little developed. Plyoric caeca 10. Diameter of eggs (in stage III of develop- 

 ment) 0.58 mm. Color in life a uniform dark red. A dark spot on LI and pectoral fin. 



Family Anoplopomatidae 



17. Anoplopoma fimbria (Pallas) 



The last years TIRH expedition has discovered in Eastern Bering Sea this 

 species which were caught by trawl at about 50 per hour . Single specimens from 

 Olytorsky Cape. Our example from the Pribilof Id. 



D XX, 17 A lU, 15 P 17 



Total length of largest example (No. 24935 Zool. Inst. Acad. Nauk.) is 

 644 mm . Second example (LGU) 620 mm . Measurements in percentage of total 

 length. (Second smaller example in parens a male). Head length 25.5 (25.2), 

 predorsal 30.6 (29.5), preventral 28 . (26 . 4), preanal 60.6 (59.4), pectoral 

 length 15.8 (15.7), ventral length 10.4 (10.5), greatest depth 18.0 (-), caudal 

 peduncle depth 4.5 (4.7). In percentage of head length, eye 13.4 (13.8), snout 

 32.5 (34.6), interorbital 30.5 (32.1), upper jaw 40.8 (41.7),. Pyloric caeca 

 numerous, their length equal to upper jaw. Color (in alcohol) dark gray 

 brown, darker dor sally. 



Family Hexagrammidae 



18. Pleurogrammus monopterygius (Pallas) 



The otter trawl caught (July 3, 1932) this form at Piramidsey Id. (south 

 of Avacha Bay) at St. 1, in 96 meters depth on a sandy clay bottom with small 

 gravel. Bottom temperature -0.2° . It is obvious that this form is important 

 in the diet of Treska . (in some stomach as many as 5 examples) . According to 

 M. F. Bernilub in 1932, spawning Pleurogrammus monopterygius i n Olytorsky Bay 

 were caught at the rate of one ton per hour . 



It is common on both coasts of Bering Sea, the Aleutian Islands and 

 Commander Ids., but does not reach Cape Navarin to the north. 



14 



