972 FISHES — PERCID^. 



140. Alvordius macrocephalus (Cope) Jordan. 



Efheostoma macroeephalum, Cope, Trans. Amer. Philos. Soc. Phila., 1866, 401. 

 Alvordius macroeepMlus, Jobdan, Man. Vert., 9d Ed., 1678, 220. 



Description. — Body elongate; head long, eel-lite; mouth rath»r large, maxillary 

 reaching to opposite anterior margin of orbit ; eye shorter than snout, 4^ in head ; ven- 

 tral shields twice as long as other scales ; cheeks, opercles, neck, and chest without 

 scales; color light brown, with a slightly undulating whitish band from upper angle of 

 opercle to caudal peduncle ; back with dark quadrate spots ; sides with nine blackish 

 longitudinal spots, alternating with smaller ones ; streaks downward and forward from 

 the eye ; vertical iina somewhat barred; spinous dorsal with a median blackish band ; 

 head spotted above ; head 3^ ; depth 7 ; D. XV, 13 ; A. II, 11 ; scales 11-77-15. Length 

 3 inches. 



Habitat, Ohio Valley. The known specimens are all from Western Pennsylvania. 



Diagnosis.— This species is distinguished from its relatives by its very- 

 large, naked head. 



Habits. — Nothing distinctive known. 



141. Alvordius phoxocephalus (Nelson) Jordan. 



Etheostoma phoxocephalum, Nelson, Bull. Ills. Mus. Nat. Hist., i, 1876, 55. 

 Alvordius phoxocephalus, Jordan, Proc, Acad. Nat. Sci. Phila., 1877, 50; Man. Vert., 2d 

 Ed., 1878, 221, and elsewhere. 



Description. — Body rather slender, compressed; head extremely long, narrow, and 

 tapering, the snout very acuminate ; mouth large, the maxiUary reaching to the eye ; 

 the lower jaw unusually narrow and long, scarcely shorter than upper ; eye about equal 

 to snout, 4^ in head; cheeks, opercles, and neck with small scales ; chest naked ; color 

 yellowish brown, somewhat as in A, aspro, but the lateral spots smaller and more num- 

 erous, scarcely twice the size of the eye, quadrate in form ; a small blackish spot at each 

 end of the lateral line ; head 4 ; depth 5^- ; D XII, 13 ; A. II, 9 ; scales 12-68-14. 

 Length 3 inches. 



Habitat, Indiana (White River) to Tennessee and Kansas ; not very abundant ; not 

 yet noticed in Ohio. 



Diagnosis. — Distinguished from the other species of the genus by the 

 long, slender head. 



Habits — This species is found in clear, gravelly rivers ; it has riot yet 

 been noticed in Ohio, but doubtless occurs in the Southwestern part of 

 the State. 



142. Alvobdius aspro Cope and Jordan. 



Black-sided Darter. 



Etheostoma ilennioides, Kirtland, Bost. Journ. Nat Hist., iii, 1841, 348, not of Safinesqne. 



— Vaillant, Reoherohes sur Etheost., 1873, 54, and of many writers. 

 Alvordius aspro, Cope and Jordan, Proc. Acad. Nat. Sci. Phila., 1877, 51. — Jordan, Man. 



Vert., 3d Kd,, 1880, 920. 



