162 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



83.— IIKMITREiniA Cope. 



(Cojie, Proc. Amer. Phil. Soc. Phila. 1870, 462: type Hemltrcmia vittafa Cope.) 



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

 (4-5 or 5-5), hooked, with grinding surface. Scales large. Lateral line 

 incomplete. Dorsal fin slightly behind the veutrals. 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. vittata 

 are permanently 5-4, the remaining species may stand under the ge- 

 neric name of Chriope.* {tjiu^ half; rpT^fm, pore.) 



* Teeth 4-5? {Hemitreniia.) 



198. H. vittata Cope. 



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

 oblique, the maxillary not reaching the orbit. Bye large, 2>h in head, 

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

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

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

 ^•, depth A^. D. 8; A. 7; scales 6-38-4; teeth 5-4 (or 5-5). L. 2^ 

 inches. Hols ton Eiver. {Cope.) 



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



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



19J). II. bJfa'CBiata Cope. 



Body rather slender, the caudal peduncle somewhat contracted. Head 

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

 equal. Upper \\\) opposite lower part of j^upil. 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 band above this on the snout. Eegions below the black 

 baud silvery. Head ^ ; depth 4^. D. 8 ; A. 7 ; scales 5-30-3 ; teeth 

 4-4. L. 1^-2 inches. Massachusetts to Maryland. A small but very 

 handsomely colored species. 

 ' {Hylopfih hifreiiatus Cox)e, Cypr. Perm. 1866, 384.) 



200. If. niaculata Hay. 



* Body long and slender, slightly elevated at the dorsal, somewhat 

 compressed. Head flattened above. Snout rounded. Mouth small, 

 terminal, slightly oblique, maxillary not reaching to opposite eye. Eye 



* Chriope Jordan, Bull. Hayden's Geol. Surv. Terr, iv, 1878, 787 : type HyUpsis 

 hifrenatus Co^e. (xpsia, -want', 6;r?), pore.) 



