CYPEiNiD^. — cvrn. 285 



ventrals; body elongate, with the 

 mouth oblique, terminal and the head 

 more or less pointed; scales large; 

 anal basis somewhat elongate, the rays 

 usually 10 • teeth usually 3, ■4—4, 3. 



MrNNiLUS, 9. 



mm. Dorsal fin beginning over ventrals; body 



rather shorter, but similar as to form, 



form of head, mouth, scales, etc. ; anal 



basis rather short; the rays usually 8. 



Episbma, 10. 



II. Suborbital, interopercle and base of mandible 



much dilated, cavernous, crossed by muc- 

 ous channels, (readily seen tmder any cir- 

 cumstances by looking at the head of the 

 flsh from below); snout thick; mouth 

 small, inferior; teeth 1, 4 — 4, 0; dorsal 

 over ventrals. . . Ebicymba, 11 



III. Lips thick, fleshy, the lower enlarged be 

 hind ; mouth small, inferior ; teeth 4 — 4 

 dorsal fin beginning anterior to ventrals 

 elongate species,resembling young Suckers. 



Phenacobius, 13. 



Kh. Teeth in the principal row S — 5 or 4 — 5 ; dorsal 



entirely behind ventrals. 



n. Anal basis not elongate, of nine or fewer rays ; 



teeth entirely without masticatory surface, 



two-rowed. 



o. Mouth normally large and oblique; scales 



small ; (a very large group embracing a very 



wide variety of forms ; the typical Western 



species are very large, with somewhat the 



aspect of Eaox, with large mouth, depressed 



head, arched back and very slender caudal 



peduncle ; the Eastern species are small, but 



typically have very large oblique mouths 



and brilliant coloration in the spring; no 



black spot at the base of the dorsal in front.) 



Telestbs, 13. 



