85. PERCID^ rCECILICHTIIYS. 
521 
■wavy bands; first dorsal bright bine in the m.iles, with a broad median 
band of crimson; speckled in the females; to]) of head dark; black 
streaks downward and forward from eye. Head 4; depth 5^-. D. IX- 
11; A 11,7; Lat. 1. 58. L. 2} inches. Indiana to Minnesota; abun- 
dant in clear cold streams ; one of the prettiest of the darters. 
{BoleicJitlii/s cos Jordan & Copeland, Proc. Acad. Nat. Sci. Pliila. 1877, 4(5; Bolcichthys 
cos Jordan, Man. Vert. 228.) 
gg. Clieeks naked ; opercles scaly. 
§20. P. exiSflS (Grd.) J. & G. 
Body compressed, tapering towards the caudal peduncle, which is 
slightly coiiti acted. Eye large, subcircular, 3^ in head; maxillary 
reaching anterior edge of pupil. Lateral line nearer the dorsal than 
the abdominal outline ; pectorals extending further than the ventrals. 
Yellowish-brown, speckled with grayish -black, dorsals and caudal 
barred; a elark spot ou the occipital region and a streak in advance of 
as well as beneath the or bit. Head 4^ (with caudal). D. X-IO; A. If, 
8. L. If inches. Little Muddy River, a tributary of the LIpper Mis- 
souri. {Girard.) Iliffers from P. eo.s in the naked cheeks. 
(Boleichthgs cxUis Girard, Proc. Acad. Nat. Sci. Phila. 1859, 103.) 
§21. P. waa’a’ecai (Grd.) J. & G. 
“Resembles P. exilis more than any of its congeners by the shape 
of the body and the general aiipearance. It differs by a more compact 
body, a proportionally shorter head, smaller scales, and the number of 
flu rays. (Iiound color yellowish-brown, the middle of the flanks macu- 
lated with transverse si)ots of blackish ; the bell}’ exhibiting a rather 
orange hue; the first dorsal has a series of vertically elongated black 
spots resembling a dark baud across the middle of the fin ; the second 
dorsal and caudal are transversely multilineated. A black streak may 
be seen in advance of the orbit and another beneath it.” I). IX-1! ; A. 
11,9. L. 2 inches. Cannon Ball River. {Girard.) Perhaps identical 
with the prece<ling. 
{Bolcichthys ivarreni Girard, Proc. Acad. Nat. Sci. Pkila. 1859, 104.) 
§22. P. g;B*acBlIa§ (Grd.) J. & G. 
Slender and graceful ; first dorsal lower and longer than the second ; 
anal much deeper than long ; tips of the ventral flus extending a little 
further back than those of the iiectorais. Olivaceous, spotted with 
blackish; second dorsal and caudal barred; a longitudinal black streak 
in advance of the orbits and a vertical one beneath them. Head 4^ 
