85. PERCID^ ALVORDIUS. 
503 
TSS. A. erassiis Jordan & Brayton. 
Body stouter and more compressed than in A. as 2 )ro. 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; head 4. D.XI-12; A. II, 8; scales 7-54-7. L. 3-4 inches. Eivers 
of Xorth and South Carolina. 
(Etheosioma maciilatum var. Cope, Proc. Acad. Nat. Sci. Phila. 1870, 2(51 (not 77«(7;-op- 
terus viaculatus Grd.); Jordan & Brayton, Bull, xii U. S. Nat. Mus. 1878, 12.) 
dd. Ventral shields verj^ large, 4 or 5 times the size of the ordinary scales; colors 
brilliant. 
‘S'S6. A. variatws (Kirt.) Jor. 
Body moderately elongate ; deeper than in A. anpro. Head rather 
short and stout. Mouth large, the maxillarj’ 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, 6 to 8 in number, 
with strong radiating points. Coloration bright olive, the back with 
short brown crossbars; 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. XH-12; A. II, 8; scales 7-53-9. 
Ohio and Pennsylvania. 
{Ftheostoma varialum Kirtlaucl, Bost. Journ. Nat. Hist. 1840, 274: Etheosioma pelt a- 
um Stauffer MSS. Cope, Proc. Acad. Nat. Sci. Pbila. 18(54, p. 233 : f JJvordius viaculatus 
Girard, Proc. Acad. Nat. Sci. Phila. 1859, G8: Ethcostoma ptUalum Vaillant, 1. c. 61: 
Alrordius peltatus Jordan, 1. c. 220.) 
aa. Vertebne less than 40; dorsal spines 10 or 11 ; palatine teeth obsolete; males with 
the lower tins tuberculate in sjjring. {Ericosma* Jordan.) 
ysy. 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 hirge 
scales; ventral plates little enlarged. Fins large; second dorsal lower 
* Ericosma Jordan, Bull. U. S. Nat. Mus. x, 8, 1877 : type Alcordius ei'ides Jordan & 
Copeland; (?)/3, spring-time ; Ko^neco, to adorn.) 
