510 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
the preuiaxillaries not protractile. Vomerine teeth very feeble or 
wanting. Scales large. Gill-membranes broadly connected; no en- 
larged ventral plates. Lateral line complete. Dorsals well separated, 
the second larger than anal, higher and shorter than spinous dorsal ; 
dorsal spines about 10; anal spines 2. (vai^o^, small; (Tz6/j.a, mouth.) 
a. Cheeks, opercles, aud throat closely scaled. 
'3'9§. N. KOiiafle (Cope) Jor. 
Body slender, somewhat compressed. Head small, rather short; the 
mouth small, subiuferior. Snout decurved, rather obtuse, maxillary 
not reaching front of eye. Cheeks, opercles, neck, and throat closely 
scaled. Eye rather large. Teeth very feeble, those on the vomer not 
evident; probably none on the palatines. First dorsal well developed, 
separated from the second, which is higher and shorter than the spin- 
ous dorsal, and considerably larger than the anal; caudal emarginate. 
Bright olivaceous above, golden below; C dark-brown quadrate dorsal 
spots, which connect by alternating spots with a broad brown lateral 
band, from which 8 narrower dark-bluish bands more or less completely 
encircle the belly; paired, anal, and caudal fins golden, brown-spotted; 
middle half of the first dorsal crimson; a series of round crimson spots 
near the base of the second dorsal ; occiput, a baud on muzzle and one 
below eye black ; a black spot on operculum and one at base of pec- 
toral; females duller and speckled with veutrals barred and lateral 
bars feebler. Head 4:^; depth 5. D. XI-12; A. II, 7; scales 11-50-12. 
L. 3 inches. Mississippi Valley, in clear streams; rather rare. 
{Pcecilichthus zonalis Cope, Journ. Acad. Nat. Sci. Pliila. 1638, 212; Jordan, Man. 
Vert. 225: AVtaos/oma riacfipes Jordan, Bnll. U. S. Nat. Mus. ii, 236, 1879; tlie female. ) 
799. N. efleifjaEBS Hay. 
Body stout, somewhat compressed. Head short and deep, with 
swollen cheeks. Snout abruptly decurved. Mouth subtermiual, hori- 
zontal, small, the maxillary not reaching the front of the eye. Eye 4 
in head. Lateral line nearly straight. Cheeks, opercles, and back of 
neck scaly; cliest and region just behind ventrals naked. Spinous 
dorsal half as high as long, a little longer than the bead; soft dorsal 
f as long as head aud § as high as long; anal f length of head, as high 
as long; pectoral fins t^ery large, reaching beyond veutrals to vent. 
Color purplish; G large quadrate black blotches along back and 8 broad 
transverse bars along sides fainter, these alternating with dark sjiots; 
many of the scales above with jet-black spots forming longitudinal 
streaks; two black spots at base of caudal; a few black spots behind 
