1038 Bulletin 4j, United States National Museum. 



spinous dorsal separated from the soft dorsal by the length of the snout ; 

 outline of the spinous dorsal gently curved, the first spine \ longer than 

 last spine, and f length of middle spine, which is If in head ; base of 

 soft dorsal longer than that of anal, its rays of about equal length, 1^; in 

 head; anal about as large as soft dorsal, its spines subeciual; ventrals 

 moderately separated, about equal to pectorals, which are \\ in head. 

 Vertebrte 18 + 22 = 40. Color yellowish olive, everywhere vaguely 

 blotched with black. Top of head, dorsal, anal, and ventral fins 

 entirely black in male, paler in female ; base of pectoral and caudal fins, 

 branchiostegal membranes, cheeks, and sides posteriorly blackish ; 

 scales everywhere finely punctulate with brown, the sides with a few 

 larger black specks. Length 5 inches. Northern Indiana to Tennessee 

 and Texas, the typical form above described being common in weedy 

 brooks from northern Indiana southward in the Wabash Basin through 

 Kentucky and Tennessee to the Washita and Saline rivers, Arkansas. 

 Strongly resembles Hadropterus aspro, but duller in color, and easily dis- 

 tinguished by the united gill membranes and the serrulate preopercle. 

 {aKtepbg, dusky.) 

 Hadrnptenis sciertu, Swain, Proc. U. S. Nat. Mus., 188:3, 252, Bean Blossom Creek, Monroe 



County, Indiana. (Coll. .Jordan & Swain.) 

 EtheoMoma scientni, Jordan, Bull. U. S. Fish Comm., vill, 1888 (1890), 160, 164, aud 167; Bou- 



LENGER, Cat., I, 80. 



Represented in streams of Texas by 



1427a. HADROPTERUS SCIERUS SERRULA, Jordan & Gilbert. 



Close to Hadropterus scierus, but with smaller scales, 68 to 71 in the 

 lateral line, instead of 64 to 66 as in typical scierum. The coloration in 

 scrniJa is paler, with more sharply defined markings, the black blotches 

 on the side being less confluent, and the sides of the belly without dark 

 clouds. Breast naked; the opercle very weakly, but generally distinctly 

 serrulate. From southern Arkansas southward through eastern Texas. 

 Common in sandy streams, {serrula, a little saw.) 



Hadropln-iis srierufi serrula, Jordan & Gilbert, Proc. U. S. Nat. Mus., 1886, 16, Red River, 

 Fulton, Arkansas (Typo, No. 36481. Coll. .Tordau & Swain); Evermann & Kendall, 

 Bull. U. S. Fish Comm., xii, 1892(1894), 113. 



Subgenus HADROPTERUS, Agassiz. 

 1428. HADROPTERUS NIGBOFASCIATUS, Agassiz. 



(CrAWL-A -BOTTOM.) 



Head 4 ; depth 5 ; eye moderate, 4 in head, equal to snout. D. XII, 11 

 or 12; A. II, 9 or 10; scales 7-58-15, pores 55 to 60. Head and body 

 stout and heavy, the body compressed, more robust than in related 

 species. Mouth moderate, the maxillary reaching front of eye ; preoper- 

 cle entire; distance from mouth to gill cleft t head. Fins all large. 

 Scales rather large. Pectoral nearly as long as head ; ventrals moder- 

 ately separated ; anal spines subequal. Breast usually naked, but some- 

 times closely scaled ; scales on the median line of the belly somewhat 



