4G. SALMONID^ OSMERUS. 
293 
lary broad, its edge strongly curved, extending to opposite posterior 
margin of pupil. Premaxillary on the level of upper part of pupil. 
Mandible projecting, its tip somewhat curved upward. Eye longer 
than snout, 4 in head. Fins high, the pectorals usually reaching ven- 
trals, and the veutrals to anal ; anal reaching about to caudal. Teeth 
weak; maxillary teeth scarcely visible. Head depth 5J. I). 9; A. 
IS; P. 11. Lat. 1. GO. L. 9 inches. Pacific coast from San Francisco 
northward ; rather common. 
(Ayres, Proc. Cal. Acad. Nat. Sci. 1860, 62; Giintlier, vi, 168.) 
479. O. ntteBiSflcltlBS Lockiugton. 
Greenish, sides silvery. Bo<ly elongate, compressed. Head rather 
long, somewhat pointed ; maxillary extending jiast pupil ; lower jaw 
l)rojectiug; maxillary rather narrow, little convex. Outline of both 
jaws nearly straight, less curved than in 0. tlialeiclitliys. Teeth on 
tongue strong, but much smaller than in 0. mordax ; teeth on maxil- 
lary conspicuous; front of both jaws with rather strong teeth; pala- 
tine teeth variable, usually strong. Eye large, 4 in head. Fins low. 
Pectorals not reaching ventral s, nor ventrals anal, nor anal to caudal. 
Head 44; depth G. I). 10; A. l.j-17; P. 11. Lat. 1. Go. L. 10 inches. 
Coast of California; not rare. Very close to 0. thaleichtliySj but proba- 
bly distinct. 
(Lockingtou, Proc. U. S. Nat. Mus. 1880, 66.) 
aa. Vomer with 2-4 strong fang-like teeth; species ascending rivers. 
4§0. ©. (Mitch.) Gill. — American Smelt. 
Transparent greenish above, silvery on sides ; body and fins with 
some dark punctulations. Body rather long and slender. Head large, 
Avith Lirge mouth and stronger teeth than in the other species of the 
genus. Small teeth along the edge of the maxillary; strong fang-like 
teeth on tongue and front of vomer ; cardiform teeth on palatines, ptery- 
goids, and hyoid bone ; mandible with moderate teeth, its tip projecting. 
Scales deciduous. Dorsal fin rather posterior, the ventrals under its 
front. Lower fins moderate, none reaching the next behind it. Gill- 
rakers two-thirds diameter of eye. Head 4; depth G^. D. 10; A. 15; 
P. 13. Lat. 1. G8. L. 13 inches. Atlantic coast from Virginia north- 
ward, entering streams and often land-locked. Very close to the 
European ’0. ejjerlamis, but the latter has larger scales (Lat. 1. GO), 
shorter gill-rakers, and rather weaker teeth. 
(dtherina mordax Mitckill, Traus. Lit. &. Pliil.Soc. N. Y. 1814, 446: Osmerus viridescens 
Lc Sueur, Journ. Acad. Nat. Sci. Phila. i, 230: Osmerus viridescens Giintlier, vi, 167.) 
