31. CYPRINID^ HYBOEHYNCHUS. 159 



viilesi Cope, Proc. Acad. Nat. Sci. Phila. 1864, 232 (from Michigan, may be a distinct 

 8i)ecies ; the scales said to be Lat. 1. 40, only three series between the lateral line 

 and the ventrais; 5-7 usually in P. promelas): Pimephalcs agaHsizli Cope, Cypr. Penn. 

 394 J Giinther, vii, 181: Pimephalcs milesii Giinther, vii, 181; Jordan, 288.) 



80.— HYBORMYNCHIUS Agassiz. 

 (Agassiz, Amer. Jouru. Sci. Arts, 1855, 222: type Minnilus notatus Raf.) 



This geuus diflers from Fimcphales only in having the lateral line 

 complete. The maxillarj- is often provided with a rndimentary or obso- 

 lete barbel. (y/5«?, gibbons; poy/"'^ snout.) 

 *Augle of month without trace of barbel. 



192. H. coBifertus Grd. 



Aspect of Fimephales promelas. Body stout, the back moderately 

 convex. Head wide, formed as in the preceding species. Mouth term- 

 inal, very small, oblique. Eye 4 in head. Fins small. Lateral line 

 usually wanting on some of the scales along the sides. Color essentially 

 as in Fimephales promelas, the males even darker ; the head black ; a 

 bread black band across the dorsal; borders of anal and border of 

 ventrais and pectorals black ; the lower fins said to be edged with white 

 in life; body somewhat mottled. Females more elongate, jilainly 

 colored. Head 3f ; depth ^. D. I, 8; A. 7 ; Lat. 1. 43; teeth 4-4. L. 

 2^ inches. Arkansas River to the Eio Grande; abundant. This species 

 is intermediate between Hyhorhynclms and Fimephales. 



(Hyborhjjnchus co)>ferius ( 9 ) and PimcphaJts inaciiIosuB { ^ ) Grd. Proc. Acad. Nat. 

 Sci. 1856, 180: Hyhorhynchus nigellus Cope, Zool. Wheeler's Expl. ^V. 100th Mer. v, 671.) 



193. H. notalMS* (Raf.) Ag. — Blunt-nosed Minnow. 



Body rather elongate, not elevated, moderately compressed. Head 

 moderate ; the muzzle blunt and convex ; top of the head depressed. 

 Cheeks vertical. Mouth small, inferior, horizontal. Fins small ; the 

 dorsal moderate, the first ray distinct and spine-like in the male, slender 

 in the female. Anal small. Caudal fin short. Scales moderate, deep, 

 closely lubricated. Scales in front of dorsal small and crowded. Eye 

 moderate. Color olivaceous, little silvery; siaes bluish; a black spot on 

 the dorsal fin in front, near the base ; a dusky shade at base of caudal ; 

 males in si)ring with the black on the dorsal more extended and the 

 head wholly black ; snout with about 14 disproportionately large tuber- 

 cles. Head 4^ ; depth 5. D. I, 8 ; A. 7 ; scales G-45-4 ; teeth 4-4. L. 

 4 inches. New York to Arkansas; generally abundant. 



{Mintiilns notatus Raf. Ichth. Oh. 47; Giinther, vii, 182; Jordan, 238: Catostomua 



* Specimens agreeing closely with this species, but having the intestines no longer 

 than the body (as in Cochlognathus), have been lately scut us from Illinois River by 

 Professor Forbes. 



