Jordan and Evermann. Fishes of North America. 167 



in life, the lower fl-shaped. Head 4J in length; depth 2 to 2f. Eye 

 quite large, 3 to 4 in head. First ray of dorsal nearer muzzle than base 

 of caudal, the anterior rays of dorsal usually very high. Scales 6-35-4. 

 D. 24; A. 8; V.9. Ohio Valley and westward, generally common, (dif- 

 formis, deformed.) 



Carpiode* difformis, COPE, Proc. Am. Phil. Soc. Phila., 1870, 480, Wabash River; JORDAN, /. c., 



195; JORDAN & GILBERT, Synopsis, 120, 1883. 

 Carpioiles ciilisanserintts, COPE, I. c., 481, 1870, Kiskiminitas River, Pennsylvania. 



267. CARPIODES THOMPSONI, Agassiz. 



(LAKE CARP.) 



Body stout, short, the back much arched, the depth 2 in length. Head 

 small, 4 to 4 in length, the snout pointed; lips thin, white, meeting at a 

 wide angle. Dorsal rays considerably elevated, & as long as base of fin. 

 Eye small, 5 to 5i in head. Tip of lower jaw much in advance of nostrils ; 

 maxillary reaching line of orbit. Origin of dorsal about midway of 

 body. Scales rather closely imbricated, 8-39 to 41-6. D. 27; A. 7; V. 10. 

 Great Lake region ; abundant ; our specimens from Lake Erie at Toledo, 

 Ohio. (Named for Rev. Zadock Thompson, who found the species in Lake 

 Champlain.) 



Carpiodes thompsoni, AGASSIZ, Am. Jour. Sci. Arts, 1855, 191, Lake Champlain, JORDAN, I. c., 



198; JORDAN & GILBERT, Synopsis, 119, 1883. 

 ? Carpiodes selene* COPE, Proc. Am. Phil. Soc. 1870, 481, supposed to be from Root River, 



Michigan. 



268. CARPIODES VELIFER, (Rafinesque). 

 (QUILLBACK; SPEARFISII; SAILFISH; SKIMBACK.) 



Muzzle conic, projecting, obtusely pointed ; tip of the mandible reach- 

 ing to opposite nostrils ; maxillary reaching to opposite front of orbit. 

 Lips full, thick, flesh-colored in life, the lower lip y^-shaped, the halves 

 meeting in an acute angle. Anterior suborbital as deep as long. Head 

 3| to 4 in length. Eye moderate or small, 4 to 5 in head. Body much 

 arched above, the depth 2| to 3 in length. First ray of dorsal usually 

 nearer muzzle than base of caudal ; anterior rays of dorsal always elevated 

 or filamentous, sometimes as long as base of fin. Caudal deeply forked, 

 its lobes slender, the upper the longer. Scales 7-35-5. D. 26 or 27. Miss- 

 issippi Valley and southwestward to Rio Grande and upper Missouri, gen- 

 erally abundant and very variable. Much of the following synonymy is 

 doubtful, some of the names perhaps belonging to C. carpio or C. difformis. 

 (velum, sail; fero, I bear.) 



Cntoslomus velifer, RAFINESQUE, Ichth. Oh., 56, 1820, Ohio River. 



Carpiodes velifer, COPE, Proc. Am. Phil. Soc., 1870, 482; JORDAN, I. c., 196, 1878. 



Curpiodes cyprinus and tumidus, JORDAN & GILBERT, Synopsis, 119, 1883. 



Ictiolms velifer, JORDAN, Man. Vert., Ed. 5, 45, 1890. 



Ictiobm velifer, JORDAN & GILBERT, Proc. U. S. Nat. Mus., 1886, 18, description of var. tumidu*, from 



Texas specimens. 

 Carpiodes tumidus, BAIRD &GIRARD, Proc. Ac. Nat. Sci. Phila., 1854, 28, Rio Grande at Fort 



Brown, Texas. (Type, No. 178. ) 



Carpiodes damalis, GIRARD, Proc. Ac. Nat. Sci. Phila., 1856, 170, Milk River, Montana. 

 Carpiodes gray i, COPE, Proc. Am. Phil. Soc. Phila., 1870, 482, Western States. 

 *Eye 3g in head; color silvery white. D. 26. This may be identical with C. dijformi*. 



