31. CVPRINIDyE SEMOTILUS. 221 



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

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

 l)osterior to ventrals. Anal basis short. Species of large size, differing 

 from tiqualius in the i»resence of a maxillary barbel. {ffytit-'J-, banner — 

 i. c, dorsal fin; the second ])art of the word was elsewhere used by 

 Ratinesque to meau "spotted". 



* Insertion of dorsal iin evidently behind ventrals and notably behind the njiildle of 

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

 at base of dorsal in front. (SemotUus.) 



347. S. coi'j>oraIis (Mitch.) Putn. — <'huh; Horned Dace. 



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

 tapering backward from a i>oint 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 h^wer 

 Jaw slightly included, the iii)iier 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 anteiiorly, about 30 series in frolit 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 in 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 ])unctulations ; a dusky bar behind 

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

 dei)th 4. D. 7 ; A. 8; scales 9-58-0 [those in the lateral line varying 

 from 52 (? var. pallichis, Alabama to Arkansas) to upwards of 05] ; teeth 

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

 Missouri ; everywhere very abundant, ascending small streams. 



(Ci/prlnuH corporalix and atromaculatus Mitchill, Amer. Month. Mag. ii, 324: Semoiilus 

 domalis and eephalan Rafmesque, Ichth. Oh. 49: Leuciscus iris and sforeri Cuv. & Val. 

 xvii: SemotUus corporalis Cope, Cypr. Penn. 363: Leueosomus corporalis Giinther, vii, 

 269 : Leueosomus pallidus (Lat. 1. 52), Leueosomus incrassatus (Lat. 1. 64), SemotUus 

 macrocephalus, and SemotUus spedosus Girard, Proc. Acad. Nat. Sci. Phila. 1856, 251, 

 252, 204.) 



348. S. tlioroaiiiitillis . Jordan. 



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

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



