226 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



longer than deep. Lateral line decurved. Dorsal flu well back, some- 

 what behind ventrals. Anal basis short. Caudal tin strong, its rudi- 

 mentary rays not greatly developed. Intestinal canal short. Teeth 2, 

 5-4. 1': the straight limb of the pharyngeal bone extremely long and 

 slender, its teeth wide apart, subconical, scarcely compressed, and but 

 slightly curved at tip, the hook being turned in the direction of the 

 angle of the bone; no trace of grinding surface. Fishes of very large 

 size, reaching a length of more than 4 feet, the largest of the Leucisciue 

 Cyprinida'. With a general resemblance to Squall us and Gila, this genus 

 (I i tier stvongly in the form of the pharyngeal bones and teeth. (--u*/r h 

 fold; ^-r/.o:, lip; the skin of the mouth behind the jaws being folded.) 



355. P. oregoiiciisis (Rich.) Gril. Sacramento "Tike." 



I)ody comparatively robust, with stout caudal peduncle. Mouth large, 

 the maxillary reaching middle of the eye. Eye small, 2A in snout, 7J 

 in head; in young specimens the eye is proportionately much larger. 

 Lateral line strongly decurved, much nearer belly than back. Coloration 

 olivaceous ; the tins in spring with red or orange ; scales thickly punctate 

 with dark dots. Head 4 ; depth 5. D. 8; A. 8; scales 12-73-G (13-7JM) 

 in Columbia River specimens); teeth 2,5-4,2 (in all specimens exam- 

 ined: not 2, 5-5, 2, nor 2, 4-4, 2). L. ;j-5 feet, levers of the Pacific 

 slope, chiefly west of the Sierra Nevada. Largest of our Cyprinida'. 



(Oyprinu8(Leuei8CU8)oregonen8i8 Richardson, Fauna Hor.-Amor. iii, 305, 1836: 

 flidlHx i/rm-ilin and )nj<- Agassi/, Anicr. Journ. Sci. Arts, l.-7>f>, 'J'J'J : (iilit 

 Ay ITS, 1'roc. Cal. Acad. Nat. Sci. 1^54, IS: I'ti/chochcUits oiryont-nsiH and yrandix 

 Girard. I*. S. I'm-. R. R. Surv. Fish. '298-300: Leuciscus grand!* and oregoneims Giin- 

 ther, vii, 239.) 



356. P. rapax Gni. 



llixly shurter and deeper than in Pt. oregonensis. Head similar, rather 

 iiiui-c depi-essed above. Mouth large, the maxillary reaching middle of 

 eye. Lateral line moderately decurved, passing along the median line 

 of I he body between dorsal and ventrals. Dorsal inserted but little be- 

 hind vent nils. Coloration dark; the sides somewhat clouded; lins 

 plain. Head :^ : depth 4j-;. I). !>: A. S; Lat. 1. 78. L. 12 inches. 

 Monterey, California. Perhaps not distinct from the Ion-going. 



(Girard. I'mr. \< -ad. Nat. Si-i. I'liila. I .-:.(!, 'Jd'.t. and f. S. 1'ac. R. R. Snrv. x, 300.) 



P. haiTordi Jor. A (Jill.. 

 IMHIII of 1'. t>r<- ; i<niriif<ifi. but more slender, the lateral line similarly 

 much deenn rd. Scales much smaller than in I'.orcyoncnsiK. Caudal less 

 ileejily forked, the pectoral longer, reaching ? to ventrals. Head 4; 



