Jordan and Evermann. Fishes of North America. 191 



silvery below ; dorsal fin dusky. (Cope.) Missouri River at St. Joseph. 

 Type about 4 inches long ; a doubtful species said to be allied to Moxos- 

 ioma collapxuni) but the dorsal has fewer rays. It is possible that this is 

 ;i valid species between anisurum and pidiense, but no species with the 

 yy-shaped lips of anisurum have been found in the Missouri River by other 

 collectors. It will not unlikely prove to be a young red horse or possibly 

 the young of Minytrema melanops. (&ucco, thick cheeks, from the interoper- 

 cular width of the head.) 



Ptychostomm bucco, COPE, Hayden's Geol. Surv. Wyoming, 1872, 437, St. Joseph, Missouri. 

 Moxostoma bucco, JORDAN & GILBERT, Synopsis, 138, 1883. 



308. MOXOSTOMA PIDIENSE, (Cope). 



Head rather long, 4| in length, flattish above. Body elongate, more 

 nearly cylindrical, little compressed. Muzzle truncate. Olivaceous, 

 sometimes with rows of faint spots along the series of scales ; dorsal and 

 caudal fins black-edged. Size quite small. Resembles M. cervinum but 

 the mouth entirely different. Great Pedee Basin. (Cope.) (Name from 

 Pedee.) 



Ptychottomus pidiensis, COPE, Proc. Am. Phil. Soc. Phila., 1870, 471, Yadkin River, North 



Carolina. 

 Moxostoma pidiense, JORDAN, Bull. U.S.Nat. Mus., xn, 133,1878; JORDAN & GILBERT, Synopsis, 



138, 1883. 



309. MOXOSTOMA COREGONUS, (Cope). 

 (BLUE MULLET.) 



Muzzle conic, much projecting beyond the very small mouth; body 

 much compressed, broadly fusiform, the back elevated and arched. Dor- 

 sal rays 14. Color silvery, with plumbeous shades above ; lower fins white. 

 Size small. Catawba and Yadkin rivers, North Corolina. (Cope.) (cor- 

 egonus, the white fish, from the form.) 



Ptychostomuscoregonus, COPE, Proc. Am. Phil. Soc. Phila., 1870, 472, Catawba and Yadkin rivers. 

 Moxostoma coregonus, JORDAN, Bull. U.S. Nat. Mns., xii, 134, 1878; JORDAN & GILBERT, Synopsis, 

 139, 1883. 



310. MOXOSTOMA ALBUM, (Cope). 



Head small, 5 in length. Muzzle prominent, but less so than in M. 

 coregonm. Mouth moderate. Back a little elevated. Depth about 3 in 

 length. Dorsal rays 12 to 14, its free border often incised. Scales 6-45-5. 

 Coloration very pale ; lower fins white. Size large ; reaches a weight of 

 4 pounds or more. Catawba and other rivers of North Carolina, (albus, 

 white.) 



Ptychostomu* albus, COPE, Proc. Am. Phil. Soc. Phila., 1870, 472, Catawba River, North Caro- 

 lina. 



Moxostoma album, JORDAN, Bull.U. S. Nat. Mus., xn, 130, 1878 ; JORDAN & GILBERT, Synopsis, 139, 

 1883. 



311. MOXOSTOMA THALASSINUM, (Cope). 



Head stout, as in M. anisurum, rather long, 4 in length, flattish above, 

 muzzle truncate, not very prominent. Mouth moderate. Back elevated. 



