85. PEECID^ ALVOEDIUS. 503 



7S5. A. crassus Jordan & Brayton. 



Body stouter and more compressed than in A. aspro. Head stout; 



mouth as in A. aspro, the maxillary reaching front of eye. Outer teeth 



slightly enlarged. Cheeks entirely naked ; opercles scaly; breast and 



anterior part of neck scaleless; ventral shields moderate. Coloration 



essentially as in A. anpro, the blotches rather faint and band-like. Depth 



5; heail -1. D. XI-12; A. II, 85 scales 7-54-7. L. 3-4 inches. Rivers 



of Xorth and South Carolina. 



{Etheoxio'.ita mnciilatstm var. Copo, Proc. Acad. Nat. Sci. Pbila. 1S70, 2(il (not Jladrop- 

 terus maeulattis Grd.); Jordan & Brayton, Bull, xii U. S. Nat. Mus. 1878, 12.) 



dd. Ventral shields very large, 4 or 5 times the size of the ordinary scales; colors 

 brilliant. 



'3'§6. A. variatus (Kirt.) Jor. 



Body moderately elongate ; deeper than in A. aspro. Head rather 

 short and stout. Mouth large, the maxillary reaching the eye ; lower 

 jaw scarcely shorter than upper ; outer teeth somewhat enlarged. Eyes 

 moderate, about as long as snout, 3^ in head. Head naked, Avith the 

 exception of a tew scales on the npper anterior part of the opercle; 

 neck and breast scaleless. Ventral shields larger than in any of the 

 other species; four times as large as the other scales, G to 8 in number, 

 with strong radiating points. Coloration bright olive, the back with 

 short brown cross bars ; the sides with broad brownish shades; black 

 blotch on neck and on opercle ; blackish bars downward and forward 

 from eye ; fins barred, the spinous dorsal with a black band. Accord- 

 ing to Dr. Kirtland, the males are further variegated with blue, green, 

 and orange. Head 3|; depth 5. D. XII-12; A. II, 8; scales 7-53-9. 

 Ohio and Pennsylvania. 



(Ftheostoma variafum Kirtland, Bost. Journ. Nat. ITist. 1840, 274: Ethcostoma pelta- 

 vm Staiiffer MSS. Cope, Proc. Acad. Nat. Sci. Pliila. 18^4, p. 233 : ? Alvordiiis inaciilaitis 

 Girard, Proc. Acad. Nat. Sci. Pbila. 1859, 08: Eihcontwna x)tUalum Vaillant, 1. c. 61: 

 Alvordius 2>eltatu8 Jordan, 1. c. 220.) 



aa. Vertebne less than 40; dorsal spines 10 or 11; palatine teeth obsolete; males with 

 the lower lins tubei'culate in spring. [Ericosma* Jordan.) 



7H7. A. evides Jordan & Copeland. 



Body moderate, somewhat compressed. Head heavy, the proflle 

 rather convex. Eye rather large, high, 3J in head. Mouth moderate, 

 somewhat oblique, the lower jaw included ; maxillary reaching front of 

 eye. Cheeks, neck above, and throat naked ; Opercles with rather large 

 scales; ventral plates little enlarged. Fins large; second dorsal lower 



* Ericosma Jordan, Bull. U. S. Nat. Mus. x, 8, 1H77 : type Alvordiun evides Jordan & 

 -Copeland; {))p, spring-time; xoineax, to adomi.) 



