504 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



tban anal, but with longer base. Coloration extremely brilliant ; dark 

 olivaceous above, tessellated with dark ; sides with about 7 broad trans- 

 verse bars extending from below the lateral line on one side across the 

 back and down the other side ; these bars are wider than the eye and 

 are connected along the lateral line by a faint black stripe. In the female 

 these bars are black and the intervening spaces yellowish. In the male 

 the bars are of a dark rich blue-green with metallic lustre; the con- 

 necting longitudinal line greenish-bronze ; just above this line is a 

 luminous yellowish streak, and above in each of the interspaces between 

 the bars is a bright blotch of bronze-red ; entire lower parts of the body 

 of a bright clear yellow, which becomes on the under side of the head, 

 throat, and branchiostegals a bright orange-red ; blackish green streaks 

 downward and forward from eye ; cheeks orange-red, the color of iron 

 rust ; dorsal fin orange-colored, with a bright bronze edge, a blackish 

 spot on the last rays; second dorsal and caudal pale orange; two bright 

 yellowish spots at base of caudal ; anal bronze, with a blue-black shad- 

 ing ; ventral fins dark blue-black ; pectorals faintly orange. Males with 

 the rays of the ventral and anal fins covered with small corneous tuber- 

 cles, exactly as in some Cypritiidcv. Female and alcoholic specimens 

 show little of the bright colors, although the same pattern is preserved. 

 The spinous dorsal has a dusky spot on its posterior rays, and the fins 

 are destitute of the dark bars found in the other species of Alvordius. 

 Head 4J; depth 5^. D. XI-10; A. II, 8; scales 9-G3-9. L. 2-3 inches. 

 White Kiver, Indiana; locally abundant; one of the most brilliant of 

 fishes. 



{Alvordius cvides Jordan & Copelaud, Proc. Acad. Nat. Sci. Pliila. 1877, 51: Ericosma 

 evides Jordan, Bull. U. S. Nat. Mns. s, 8, 1877.) 



7§§. A. fascBatws (Grd.) Jor. 



" It has the same blennioid aspect as its congener {Alvordius aspro) ; 

 the total length of the specimens observed measuring about two inches 

 and a quarter, the head entering in it four times and a half. The eye is 

 of medium size, subcircular; the diameter being contained 4 times in 

 the side of the head. The first dorsal is lower and longer than the 

 second, to which it is contiguous. The anal is well developed, rather 

 deeper than the second dorsal but shorter upon its base. The caudal 

 fin is subtruncated. The ventrals and the pectorals are of moderate 

 development, their tips being nearly even. The rays are D. X, 12 ; A. 

 I, 8; the scales are small, deeper than long, posteriorly rounded oft" and 

 minutely pectinated, whilst their anterior margin is truncated, exhibit- 

 ing numerous radiating ridges upon the latter section only. Their im- 



