85. PERCID^ ALVORDIUS. 503 



785. A. crasstis ' 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. aspro, the blotches rather faint and band-like. Depth 

 5;heau4. D. XI-12; A. II, 8 j scales 7-54-7. L. 3-4 inches. Eivers 

 of North and South Carolina. 



(Etkeosloma maculatnm var. Cope, Proc. Acad. Nat. Sci. Phila. 1870, 261 (riot Hadrop- 

 terus macalatus 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. 



786. A. variants (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, with the 

 exception of a few scales on the upper 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, 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 3f; depth 5. D. XII-12; A. II, 8; scales 7-53-9. 

 Ohio and Pennsylvania. 



(Ftheostoma variahim Eirtlaud, Bost. Journ. Nat. Hist. 1840, 274: Etheostoma pelta- 

 um' Stauffer MSS. Cope, Proc. Acad. Nat. Sci. Phila. 1854, p. 233 : ? Alvordlus maculal us 

 Girard, Proc. Acad. Nat. Sci. Pbila. 1859, 68 : Etheostoma ptltatum Vaillant, 1. c. 61 : 

 Ahordius peltatus Jordan, 1. c. 220.) 



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

 the lower h'ns tuberculate iu spring. (Ericosma* Jordan.) 



787. A. evades Jordan & Copeland. 



Body moderate, somewhat compressed. Head heavy, the profile 

 rather convex. Eye rather large, high, 3 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 



. S 



* Ericosma Jordan, Bull. U. S. Nat. Mns. x, 8, 1877 : type Ahordius evidcs Jordan & 

 Copelaiid; (r?p, spring-time ; HO^JHEO^ to adorn.) 



