*65 
f 
Genus Eleginus Ficher 
Eleginus FISCHER, Mem. Soo. Nat. Moscou, vol. 4, pt. 2, p. 252, 
pi. 18, 1813. (Type Gadus navaga KOELREUTER, monotypic.) 
Tilesia (not IAMOUROUX 1821) SWAINSON, Nat. Hist. Animals, vol. 
2, p. 300, 1839. (Type Gadus gracilis TILESITJS, monotypic.) 
Pleurogadus T. H. BEAN, in JORDAN, Rep. U. S. Fish Comm., pt. 
13, p. 918, 1885 (1887). (Type Gadus gracilis TILESIUS, orthotypic.) 
Body rather slender. Head moderate, long. Mandibular barbel 
small. Lower jaw included within upper. Subopercle and postclavicle enlarged, 
bone dense and smooth like ivory. Transverse projections of vertebrae club 
shaped, narrow at base, expanded terminally into rounded hollow bulb at tips. 
• * 
Scales very small. Dorsal fins 3. Anal divided as 2 fins. 
Small cod fishes of the Arctic Seas. 
(Koelreuter) 
Gadus navaga KOELREUTER, Nov. Comm. Acad. Petropol., vol. 14, 
p. 484, pi. 12, 1770 (type locality: coast of northern Russia). 
—PALIAS,. Zoogr. Ross. Asiat., vol. 3, p. 196, 1811 (Arctic seas; 
Russio; Ob River mouth). —GUNTHER, Cat. Fishes Brit. Mus., vol. 
4, p. 330, 1862 ('White Sea). --GILL, Proc. Acad. Nat. Sci. 
Philadelphia, p. 251, 1863 (reference). 
