31. CYPRINID^E SEMOTILUS. 221 



testinal canal short. Teeth 2, 5-4, 2, hooked, without masticatory sur- 

 face. Scales moderate. Lateral line continuous. Dorsal more or less 

 posterior to ventrals. Anal basis short. Species of large size, differing 

 from Squalius in the presence of a maxillary barbel. (<r/>, banner 



1. e., dorsal fin; the second part of the word was elsewhere used by 

 Kafinesque to mean "spotted". 



* Insertion of dorsal fin evidently behind veutrals and notably behind the middle of 

 1 ho body ; scales reduced in size and much crowded anteriorly ; a black spot 

 at base of dorsal iu front. (Semotilus.) 



347. S. corporalis (Mitch.) Putn. Chub; Horned Dace. 



Body stout, the dorsal outline arched in front of the dorsal, the body 

 tapering' backward from a point considerably in advance of the dorsal, 

 so that the base of that fin is oblique. Head large and heavy, broad 

 and rounded above. Snout broad. Mouth broad, oblique, the lower 

 jaw slightly included, the upper lip just below the level of the pupil, 

 the maxillary barely reaching the front of the pupil ; maxillary bar- 

 bel small, not evident in specimens of less than 2 or 3 inches in 

 length. Eye rather small, about 5 in head. Scales small, considerably 

 crowded and reduced anteriorly, about 30 series in front of the dorsal 

 fin. Lateral line considerably decurved. Fins small ; the dorsal well 

 behind ventrals, its last ray well in advance of the base of anal. Color 

 dusky bluish above ; sides with a vague dusky band, black in the young, 

 disappearing iu the adult; belly creamy, rosy-tinted in the males in 

 spring ; dorsal fin always with a conspicuous black spot at the base in 

 front, which is bordered with red in the male ; a dark vertebral line ; 

 scales everywhere edged with dark puuctulations ; a dusky bar behind 

 opercle ; males with the snout coarsely tuberculate in spring. Head 3f ; 

 depth 4. D. 7 ; A. 8 ; scales 9-58-6 [those in the lateral line varying 

 from 52 (? var. pallidus, Alabama to Arkansas) to upwards of 65J ; teeth 



2, 5-4, 2. L. 10 inches. Western Massachusetts to Georgia and Upper 

 Missouri ; everywhere very abundant, ascending small streams. 



(Cyprinns corporal-is and atromaculatus Mitchill, Amer. Month. Mag. ii, 324: Semotilits 

 dorsalis and ceplialus Eafinesquo, Ichth. Oh. 49 : Leuciscus iris and storm Cuv. & Val. 

 xvii : Semotilus corpordlis Cope, Cypr. Perm. 363 : Leucosomus corporalis Gunther, vii, 

 269 : Leucosomus pallidus (Lat. 1. 52), Leucosomus incrassatus (Lat. 1. 64), Semotilus 

 macrocephalus, and Semotilus speciosns Girard, Proc. Acad. Nat. Sci. Phila. 1856, 251, 

 252, 204.) 



34. S. tlioreaiiianus Jordan. 



Body short and rather stout, abruptly narrowed behind dorsal. Head 

 short and thick, almost round. Mouth large, oblique, the jaws equal. 



