Jordan and Evermann. Fishes of North America. 601 



canines, are freely depressible ; a long series of teeth on the palatines, 1 

 or 2 of the anterior teeth on each side and 1 or 2 others long, slender, and 

 fang-like. Tongue free anteriorly, roughish, but apparently without 

 teeth. Scales very large, cycloid. Dorsal fin inserted somewhat behind 

 the middle of the body, at a distance of nearly 4 times its base in front 

 of the anal, its height a little greater than the length of its base; anal 

 fin anteriorly nearly as high as the dorsal, its posterior rays low ; pectoral 

 fins placed low, rather short, about as long as the maxillary ; caudal fin 

 short, narrow, apparently forked; ventrals (lost in the type) probably 

 in front of the dorsal. Coloration light olive, the sides silvery, with dark 

 punctulations. Peritoneum silvery, underlaid by black pigment. Santa 

 Barbara Channel, California, the only specimen known taken from the 

 stomach of a hake (Merluccius}, itself found in the stomach of a long- finned 

 albicore (Germo alalunga"). (ringens, gaping.) 



Stidis ringens, JORDAN & GILBERT, Proc. U. S. Nat. Mus., 1880, 273, Santa Barbara Channel. 

 (Type, No. 27401. Coll. Jordan & Gilbert); JORDAN & GILBERT, Synopsis, 277, 1883. 



287. ARCTOZENUS, Gill. 



Arctosenm, GILL, Proc. Ac. Nat. Sci. Phila., 1864, 188, (borealis). 



Head elongate, conical, the snout attenuate, the jaws straight, the 

 lower mostly covered by the upper ; teeth of lower jaw anteriorly slender, 

 recurved, and distant ; posteriorly small, acute, and close together. This 

 genus is closely related to Sudis, from which it differs mainly in the 

 absence of fang-like teeth. From Paralepis it differs in the position of 

 the ventral fins, which are entirely behind the dorsal. The known spe- 

 cies belong to the deep waters of Arctic America ; long, slender fishes 

 suggesting the Barracuda in outline, (ap/crof, northern ; ffvof, strange.) 



a. Teeth comparatively strong ; Atlantic species. BOREALIS, 897. 



aa. Teeth comparatively weak; Pacific species. CORUSCANS, 898. 



897. ARCTOZEXUS BOREALIS (Reinhardt). 



Head 4; depth 12. B. 7; D. 8; A. 32; P. 11 ; V. 9. Snout as long as 

 rest of head ; mandible included, its upturned tip fitting into an emargi- 

 nation of upper jaw. Teeth as in A. coruscans, but considerably stronger. 

 Pectoral and ventral fins small, the latter inserted behind the dorsal. 

 Color plain. Greenland ; occasionally southward to Cape Ann ; scarce. 

 (borealis, northern.) 

 Paralepis borealis, REIXHARDT, Naturv. Math. Afhandl., vn, 115, 1832, Greenland; GONTHER, 



Cat., v, 419,1864. 



Arcto-enns borealis, GILL, Proc. Ac. Nat. Sci. Phila., 1864, 188. 

 Sudis borealis, JORDAN & GILBERT, Synopsis, 278, 1883. 



898. ARCTOZEXUS CORUSCANS (Jordan & Gilbert). 



Head 4 ; depth 13. D. 8 ; A. 31 ; P. 11 ; V. 9 ; scales 60. Body very 

 elongate, of nearly uniform depth, the caudal peduncle very slender; 

 abdomen compressed. Head long; snout sharp, half length of head. 

 Eye large, high. Jaws equal ; maxillary reaching vertical from nostril ; 

 tip of lower jaw fitting into an emargination of premaxillaries ; none 



