296 CONTRIBUTIONS TO NORTH AMERICAN ICnTHYOLOGY IV. 



14^5.— 2aYPC3AlLOi^Er>KUS Goode. 

 (Goodc, Proc. U. S. Nat. Miis. 1830, iii, 483: type H. chahiheius Goode.) 



Body wub-terete, covered willi adherent rou^b-pectinate or ctenoid 

 scales. Mouth rather large, the maxillary reaching to beyond front of 

 orbit,; lower jaw projecting. Teeth on jaws, small, sharp; tongue 

 smooth. Dorsal in front of ventrals. Otherwise essentially as in Argen- 

 tina.. Deep sea. {uipa/.n:;^ under the sea; iVeo/^o?, dweller.) 



4§5. 15. ctlialybeflMS Goode. 



Grayish, mottled with brown; scales metalHc silvery. Body plump, 

 terete. Maxilhiry broad and flattened posteriorly, extending to front 

 of pni)il, its length 2f in head. Interorbital space broad, 4 times the 

 diameter of eye. Scales arranged in reguUir transverse rows, overlap- 

 ping in such a manner as to resemble oblique plates ou the sides. Lat- 

 eral line prominent, straight. Insertion of dorsal midway between pec- 

 torals and ventrals, or snout and adipose fin; pectorals long; ventrals 

 under middle of dorsal ; caudal forked. Head 4 ; depth 4. D. 11 ; A. 

 8; P. 17 or 18; V. 9 or 10; Lat. 1. 52. Deep sea, off the coast of lihode 

 Island. 

 (Goode, Proc. U. S. Nat. Mus. 1880, 484.) 



146.— COE2ECJOIVUS Liimteus. 



White-Jish. 

 (Artedi; LinntBus, Syst. Nat. : type Corcgonus laceretus L.) 



Body oblong or elongate, compressed. Head more or less conic, com- 

 pressed, the form of the snout varying considerably. Mouth small, the 

 maxillary short, not extending beyond the orbit, with a well-developed 

 supplemental bone. Teeth extremely minute, if present. Scales mod- 

 erate, thin, cycloid, rather firm. Dorsal fin moderate; caudal tin deeply 

 forked; anal fin somewhat elongate; ventrals well developed. Pseudo- 

 branchiie large. Gill-rakers varying from short and thickish to very 

 long and slender. Air-bladder very large. Stomach horseshoe-shaped, 

 with many (about 100) pyloric cceca. Ova small. Species about 40, in- 

 habiting the clear lakes of jS^orthcrn Europe, Asia, and America, in 

 Arctic regions descending to the sea. Most of them spawn in late fall 

 or winter near the shore, at other seasons often frequenting consider- 

 able depths. The group, as here defined, includes a number of sections 

 characterized by minor modifications of structure, some of which have 

 been considered as genera. It seems to ns that the number of distinct 

 species has been overestimated by pievious writers, and that the geo- 

 grax)liical range of each one is much wider than has hitherto been 



