CATOSTOMlDiE. — CIX. 321 



9. CARP/ODES, Rafinesque. Carp Suckers. 



* First rays of dorsal very inucli elevated and attenuated, about 

 as long as the base of the fin. 

 f Muzzle conic, projecting. 



1. C. velifer, (Raf.) Ag. Spear Fish. Sail Fish. 



QuiLLBACK. Skimback. MuzzIg coiiic, much less obtuse 



than in the next; depth 2^ in length; head of; eye ^\ 



in head; color pale, scarcely silvery, as in all the species; 



D. 22; lat. 1. 37. Ohio R. 



\X Muzzle very abruptly obtuse. 

 a. Anterior suborbital bone sub-triangular, longer than deep. 



2. C. se/ene. Cope. Moox CxV.rp - Sucker. Back 

 steeply elevated; intermaxillaries far in advance of 

 orbit; D. 2G; V. 10; A. 8; lat. 1. 37; silvery. Great 



Lakes, abundant. 



aa. Anterior suborbital bone, much deeper than long. 



3. C. cutisanserinus, Cope. Loxg- Finned Carp 

 Sucker.. Mouth usual in position, the upper lip in 

 advance of the nostrils, etc.; dorsal fin beginning mid- 

 way of body more elevated than in any other species; 

 snout with small tubercles in spring males; head 4 in 

 length; depth 2|; D. 26; V. 10; A. 8. Ohio Valley, 

 abundant. 



4. C. difformis, Cope. Deformed Carp Sucker. 



Eye very large, and well anterior; the front edge of the 



lower jaw in line with the anterior rim of the orbit, and 



the end of the upper lip reaching the line of the anterior 



rim of the orbit, the physiognomy being therefore 



peculiar in the great obtuseness of the head; insertion 



of dorsal anterior to middle of the head; D. 24; A. 8; 



V. 9; lat. 1. 35. Ohio River. 



** Anterior rays of dorsal scarcely filamentous, little more than 

 half the length of the base of the fin. 

 h. Head comparatively large, Sv to 4 in length. 



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