980 FISHES——PERCID 2. 
Habitat, Upper Mississippi Valley, Ohio Valley, and tributaries of Lake Erie and 
Lake Michigan. In much of tho Ohio Valley the most abundant member of the family, 
swarming in all streams. 
Habits:—It prefers the channels on gravelly bottoms, seldom ascending 
brooks. It is less active than many of its relatives, but is the most 
gaudily colored of all. Stories of its having first appeared in different 
streams at the time of the outbreak of the late civil war are still extant, 
there being something patriotic about its red and blue coloration. For 
similar reasons it is sometimes called “ soldier- Heh ” by the very few pene 
sons who know of its existence. 
153. Pa@cILICHTHYS SPECTABILIS Agassiz. 
Pecilichthys spectabilis, AGASsiz, Amer. Journ, Sci. Arts, 1854, 304.—_JorDAN, Man. Vert., 
2d Ed., 1878, 226, and elsewhere. 
Description.—Very similar to the preceding, but more elongate and rather more com- 
pressed ; the colors somewhat similar, but the upper portion of the sides with distinct 
blackish stripes along the rows of the scales, and the ground color of the back and 
sides having a peculiar whitish or bleached appearance ; the two dorsal fias usually well 
separated; head 4; depth 44; D. X, 12; A. II, 7; scales 5-40-7; Lat. 1. on 20 to 25 
scales. Length 2 to 3 inches. 
Habitat, Ohio Valley and Upper Mississippi Valley, with the preceding and nearly 
equally abundant, but frequenting chiefly the small brooks and spring runs. 
Habits—If this be a distinct species (which I doubt), and not merely 
the brook form of the preceding, it differs from the latter in its place of 
abode. It abounds in the little brooks, where it is as plentiful as P. 
ceruleus is in its larger streams. 
Pa@ILicHtHys Eos Jordan and Copeland. 
Red-sided Darter. 
Boleichthys eos, JORDAN and COPELAND, Proc. Acad. Nat. Sci. Phila., 1877, 46—JoRDAN, 
Man. Vert. 2d Ed., 1878, 228. 
Description.— Body elongate, slender, somewhat compressed, especially behind, rather 
heavy forwards, with very long caudal peduncie; head long, rounded in froot; mouth 
small, little oblique, the upper jaw a very little the longer; dorgal fins high, about 
equal; caudal truncate; cheeks, opercles, and neck closely scaled ; breast with a median 
series of small scales, or none; lateral line developed on 22 to 26 scales, arched upward 
above pectorals; color dark olive, with darker markings; ten or twelve dorsal spots or 
bars, and as many short, dark blue bars, net continuous with them; the inter- 
spaces between these bars, as well as most of the ventral region, bright crimson in ihe 
males, nearly plain in the females; lower parts of the sides, cheeks, etc., with various 
sharply defined, but irregular black markings; second dorsal, caudal, and pectvrals 
strongly marked with wavy bands; first dorsal brigit blue in the males, with a broad 
median band of crimson, speckled in the females; top of head dark; black streaks 
