31. CYPRINID^ HYBORHYKCIIUS. 
159 
milesi Cope, Proc. Acad. Nat. Sci. Pliila. 18G4, 282 (from Micbigau, may be a distinct 
species ; tbe scales said to be Lat. 1. 40, only three series between tbe lateral line 
and tbe ventrals ; 5-7 usually in P. proaicZas) : Pimejyhales agassizii Co])e, Cy^m. Penn. 
394; Giintber, vii, 181 : Pimephales milesii Guntber, vii, 181; Jordan, 288.) 
80.— BBYBORHYNCIIUS Agassiz. 
(Agassiz, Amer. Journ. Sci. Arts, 1855, 222: type Minnilus notatus Raf. ) 
This geiius differs from Fimcpliales ouly in having the lateral line 
complete. The maxillary is often provided with a rudimentary or obso- 
lete barbel. gibbous; poy/pK^ snout.) 
*Angle of month without trace of barbel. 
192. II. coiifertMS Grd. 
Aspect of Pimephales pronielas. Body stout, the back moderately 
convex. Head wide, formed as in the j^receding 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 Pimephales promelas, the males even darker ; the head black ; a 
broad black band across the dorsal; borders of anal and border of 
ventrals and pectorals black ; the lower fins said to be edged with white 
in life; body somewhat mottled. Females more elongate, plainly 
colored. Head 3f ; depth 3f. D. I, 8; A. 7 ; Lat. 1. 43; teeth 4-4. L. 
2^ inches. Arkansas Eiver to the Eio Grande; abundant. This species 
is intermediate between Hyhorhynclms and Pimephales. 
{Hyborhynchus confertus ( 5 ) aud Pimephales macuJosus { $ ) Gfva. Proc. Acad. Nat. 
Sci. 1856, 180: Myhorhynchus nigellus Cope, Zool. Wheeler’s Expl. W. lOOtb Mer. v, 671.) 
193. H. notaSws * (Raf.) Ag. — Blunt-nosed Minnow. 
Body rather elongate, not elevated, moderately comiiressed. 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; skies bluish; a black spot on 
the dorsal fin in front, near the base ; a dusky shade at base of caudal ; 
males in spring with the black on the dorsal more extended and the 
head wholly black ; snout with about 14 disproportionately large tuber- 
cles. Head 4J ; depth 5. D. I, 8 ; A. 7 ; scales 6-45-4 ; teeth 4-4. L. 
4 inches. Eew York to Arkansas; generally abundant. 
(Minnilus notatus Raf. Icbtb. Ob. 47; Giintber, vii, 182; Jordan, 288: Catostomua 
* Specimens agreeing closely witb tbis species, but having tbe intestines no longer 
than tbe body (as in Cochlognathus), bave been lately sent us from Illinois River by 
Professor Forbes. 
