382 



SYNOPSIS OF THE CYPRINIDiE OF PENNSYLVANIA. 



of muzzle; muzzle little obtuse, mouth moderate, terminal, maxilla to orbit; no lateral silver band or dorsal spot; 



ll/EMATURUS. 1 



a caudal basal spot; tail red; temporal region rounded. A. 1.7. 



"Scales 6 — 38 — 4 ; head one-sixth total length ; teeth 4 — 4;" mouth oblique, large; A. 11.9. regius. 

 Form compressed; vertex convex; scales 6 — 35 — 3; eye 3.5 in length head, which enters four times to origin 



of caudal; ventral fins to vent; a lead-colored lateral and dorsal band. A. 1.8. 



FRETENSIS.f 



T). Teeth +4 — 4+; mouth obliquely descending; lateral line complete. 



Form compressed; vertex convex; scales 6 — 39 — 3; eye 2.75 in length of head, which is over four times in 

 length to base of caudal; depth 4.66 in same; ventral fins not reaching vent; no lateral or dorsal bands. A. 1.9. 

 Teeth 2.4 — 4.2. plumbeolus. 



Scales 6 — 35-6 — 3, 17-19 rows in front of dorsal; muzzle nearly flat, mouth oblique, to opposite orbit; eye 

 one-third head; lateral line decurved complete, caudal peduncle slender ; teeth 2.4 — 4.2; A. 1.8. Brown, a 

 burnished broad black band from tail to muzzle, light-bordered above on the latter. chalybaeus. 



E. Teeth 4 — 4; mouth obliquely descending; lateral line imperfect. 



Scales 5 — 36 — 3, 13-14 vertebral in front of dorsal ; a blackish rostral and lateral band; eye three times in 

 head ; head about equal depth, four and three-fifths in total length ; maxilla to opposite orbit ; muzzle acuminate, 

 flat, mouth oblique, lip opposite upper rim of pupil; mandible a little longer; back compressed elevated; caudal 

 peduncle stout; lateral line posteriorly imperfect; anal 8. iikteroiion. 



Scales 5 — 36 — 3, 12-13 rows crossing anterior to dorsal fin; muzzle very obtuse, shorter than orbit; mouth 

 oblique, top of areh opposite lower rim of pupil ; eye one-third head which is equal depth and four and one-fifth 

 times to base of caudal ; teeth 4 — 4. A. 7. Anterior fifth of lateral line existing ; straw-colored, with a black 

 band on sides and round muzzle, orange-bordered above on latter region. bifrenatuh. 



* Ilybopsis haematurus, m. sp. nov. 



Eye three and one-half times in head, which measures four times to origin of caudal. Temporal width one 

 and three-quarter times from nape to end muzzle. Greatest depth four and four-fifths in length to base caudal. 

 Lateral line very slightly deflexed, rising opposite hinder rays of dorsal. Basis of dorsal three-fifths height ante- 

 riorly, near four-fifths front of anal. Anal basis short, rays 1.7. 



Above blackish lead-color; head above, and behind, and before orbit, blackish; a faint blackish band on middle 

 of sides from last dorsal rays to caudal, a basal dorsal spot, continued as a line on the fin ; head below and median 

 line of body whitish. Total length 2.75 in. 



This plain species is abundant in the St. Josephs lliver, Michigan, and at Michigan City, Indiana. Its dull red 

 tail is a noticeable feature of coloration. , 



•j" Hybopsis fretensis, Cope, sp. nov. 



General appearance, that of Alburncllus. Lateral line decurved, its course on the caudal peduncle below the 

 middle line. Seventeen rows of scales in front of the dorsal fin ; scales of body with concentric stronger than 

 radiating lines. Mouth quite oblique, middle premaxillary line opposite middle of pupil; maxillary not attain- 

 ing line of orbit. Length muzzle equal diameter orbit. Pharyngeal teeth more or less crenatc; external angle of 

 the pharyngeal boue scarcely projecting. 



Total length 2 in. 4.5 lines; end of muzzle to basis ventrals 10.85 lines; to basis anal 1 in. 4.5 lines. 



lleddish-olive above, with a dark median dorsal band; lateral leaden silvery band, not distinctly defined ; oper- 

 cular apparatus and pre- and sub-orbital regions brilliant silver; below less brilliant; a dark spot at base of caudal. 



A single specimen of this species is in the Museum Academy, from near Detroit, Michigan. 



