Family Osmeridae 



9 . Mallotus viliosus (Muller) 



The species was found quite often during the investigation from the 

 KRASNOARMEIETZ (1933, st. 11, 18, 22, 77, 89) at depths from 65-74 

 meters and temperatures of 1.3° to -1.7" on sandy and clay bottoms. In 

 Siberian waters it is absent (Kara sea, Laptev sea, and E. Siberian sea). 

 However, they occur off the arctic coast of America and on the North 

 Atlantic coast. 



10. Osmerus eperlanu-s dentex Stemdachner 



Anadyr estuary, at the coast. 



1 1 . Thaleichthys pacificus (Richardson) 



Salmo ( Mallotus ?) pacificus Richardson, Faun. Bor.-Amer. 1836, III, p. 126. 



Thaleichthys stevensi Girard, U. S. Pac. R.R. Exp. Fish., X, 1858, p. 325, 

 pi. 75, figs 1-4. 



Osmerus albatrossis Jordan & Gilbert, Fish. Bering Sea, 1899, p. 439; 

 Taranetz Ivest. Far Eastern Branch Ak. Nauk SSSR, No. 1-2 3, pp. 67. 



Reported from Kodiak Id. to Northern California. During the TIRH 

 expedition of the KRASNOARMEIETZ (1932) examples were found in the eastern 

 part of the Bering Sea (A . Y. Taranetz, 1933, p. 67). Our examples, obtained 

 at Pribilof Ids. measure: 



D III, 9 A III, isi/ Sp. Br. 5 plus III 16 i/ 

 Teeth weak, small teeth on jaws and pterygoid. Two thin weak hooked teeth 

 on vomer. Glossohyal with still slightly larger teeth. Mouth large, upper 

 jaw reaching almost to a vertical at end of eye. The eye is small, 5-1/2 in 

 head. Opercular with clear concentric rings. The ventral fins are attached 

 in front of vertical from nape so that preventral distance is less than predorsal. 

 The peritoneum is dark. Total length 223 mm . Measurements in percentage 

 of standard length; Head 20.0; predorsal 49.2; preventral 44.9; pectoral 

 length 13.3; greatest depth 16.9; caudal peduncle depth 6.9. In percentage 

 of head length: eye 18.0; snout 26.9; upper jaw 43.6; lower jaw 56.4. 



1/ 



A. Y. Taranetz (I.e.) reports the following measurements: Dili, 8-9, A III 

 17-18, sp. br. 5 plus 15-16, vert. 67 (68 with urostyle), pyloric caeca 9. 



2/ 



Jordan & Gilbert, (1899 p. 439) obviously erroneously report 12 gill rakers. 



8 



