312 FISHES OF ILLINOIS 



chin rather densely sprinkled with fine dark dots; black humeral scale very 

 large and usually distinct, its depth nearly equal to diameter of eye; spinous 

 dorsal pale below, with a broad outer margin of dusky; soft dorsal faintly 

 barred; caudal with 6 or 7 wavy bars which are continuous for most part on 

 both rays and membranes, as in E. squamiceps and E. flabellare: pectorals 

 faintly barred ; other fins plain. Head 3.36 to 3.46, rather slender and pointed; 

 width of head 2 to 2.3; interorbital space about half of eye, 7.1 to 8.1; eye 

 roundish, somewhat protruding above cranium, 3.2 to 3.7; mouth rather 

 large, subterminal, oblique, tip of upper lip above level of lower margin of 

 orbit; maxillary reaching past front of orbit; cleft 2.9 to 3.2 in head; jaws 

 subequal; gill-membranes scarcely connected, distances to angle and to back 

 of orbit equal. Dorsal fin VI or VIII, 11-12; two fins scarcely separated; 

 first dorsal low, 50 to 59 per cent, of height of second (first 2.7 to 3.8 in head, 

 second 1.6 to 1.9); caudal subtruncate; anal II, 7; pectorals 1.2 in head; 

 separation of ventrals less than half their width at base. Scales 6, 42-45, 6 

 or 7 [10]; lateral line always incomplete, the pores developed on 15 to 20 

 scales only; cheeks naked; opercles usually naked, sometimes with a trace 

 of scales; nape and breast naked; belly covered with ordinary scales. 



This rare little fish has beejfi taken in this state in only four 

 collections, all from rocky and gravelly creeks in Pope and 

 Hardin counties. It was originally described in 1890 from the 

 tributaries of the Cumberland River in Clinton county, Ken- 

 tucky, and seems not to have been since reported from any 

 other place. 



ETHEOSTOMA SQUAMICEPS JORDAN 



(MAP XCVI) 



Jordan, 1877, Bull. U. S. Nat. Mus., No. 10, 11. 



J. & G., 514; M. V., 131; B., I,_85; J. & E., I, 1096; L,., 29. 



Length 2J^ to 3 inches; body robust, back low, and caudal peduncle 

 stout; depth 4.9 to 6; greatest width of body about % its greatest depth; 

 depth caudal peduncle 1.6 to 2.3 (usually less than 2) in its length. Color 

 dusky olive, finely and densely mottled and specked with dark brown, lower 

 part of sides and belly scarcely lighter than upper parts; no lateral spots or 

 blotches and no evident cross-bars*; a more or less distinct dark humeral 

 scale, a bar before eye, and a very distinct suborbital streak; chin and cheeks 

 conspicuously vermiculated with dark brown; second dorsal, caudal, and 

 pectorals finely barred, latter faintly. Head 3.7 to 4 in length, nape angled 

 and profile noticeably decurved to end of bluntly pointed snout; interorbital 

 space almost equal to eye, 6 to 7.2 in head; eye round, 3.7 to 4.4; mouth 

 largef, terminal, oblique, the jaws subequal; maxillary reaching past front of 

 pupil; cleft 2.8 to 3.3; gill-membranes scarcely connected:}:, distances to angle 



* Compare with Jordan and Evermann, Bull. 47, U. S. Nat. Mus., Pt. I., p. 1096. 



f "Small" (Jordan and Evermann, 1. c.). 



\ "Rather broadly connected" (Jordan and Evermann, 1. c.). 



