1G2 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



83. IIEMITREIttlA Cope. 



(Cope, Prop. AIIUT. Phil. Soc. Phila. "H70, 462: type Hemitremia riitata Cope.) 



Body moderately elongate. Mouth normal. No barbel. Teeth 4-4 

 ( 1_.~ or .~-5), hooked, with grinding surface. Scales large. Lateral line 

 incomplete, Dorsal fin slightly behind the ventrals. Anal basis short. 

 Species of small size. The typical species, of which but a single speci- 

 men is known, has the teeth 4-5; the normal number is probably 4-4, 

 however, as in the other species. If, however, the teeth in H. rittata 

 are permanently 54, the remaining species may stand under the ge- 

 neric name of Chriope.* (^//t', half; r^^a, pore.) 



* Teeth 4 -5 ? ( Hem Uremia. ) 



198. II. vittata Cope. 



Body stout. Head very short, the muzzle obtuse. Mouth small, 

 oblique, the maxillary not reaching the orbit. Eye large, 3i in head, 

 equal to length of muzzle. Dosal fin beginning a little behind the ven- 

 trals. Lateral line developed for about half the length. Coloration 

 dark, a dark lateral band, above this a pale shade, the belly pale. Head 

 4; depth 4. D. 8; A. 7; scales C-38-4; teeth 5-4 (or 5-5). L. 2 



inches. Holston Eiver. (Cope.) 

 (Cope, Proc. Amer. Phil. Soc. Phila. 1870, 462.) 



* * Teeth 4-4. ( Ch riope Jor. ) 



1 Of). II. bifrenata Cope. 



Body rather slender, the caudal peduncle somewhat cont racted. Head 

 moderate, the muzzle very obtuse. Mouth oblique, the, jaws about 

 equal. Upper lip opposite lower part of pupil. Eye large, 3 in head, 

 longer than muzzle. Lateral line developed for a very short distance 

 only. Thirteen scales before dorsal. Straw colored, the scales brown- 

 edged above. A shining black band from snout through eye to caudal. 

 An orange hand above this on the snout. Regions below the black 

 hand silvery. Head I 1 ,; depth 4. 1X8; A. 7; scales T.-3G-3 ; teeth 

 4-4. L. U-L' inches. Massachusetts to ."\lar\land. A small but very 

 handsomely colored species. 



(IIyl">l> '> liifi-rniitiis <'<>pr, Cypr. 1'rnii. 18GG, 384.) 



2OO. II. m:i< ui:it;i Hay. 



I'.ody long and slender, slightly elevated at the dorsal, MMiiewhat 

 compre-sed. Head llatlened above. Snout rounded. Mouth small, 

 terminal, slightly ohli<|'ie, maxillary not reaching to opposite eye. Eye 



'Chriope Jordan, Bull. I[aylm's <;..!. Sniv. Terr, iv, 1878, 787: type Hybopsie 

 Cope, (xpeia, want ; ox)), pore.) 



