Jordan and Evertnann. — Fishes of North America. 1051 



Indiana and south westward to Arkansas r known from the lower Wabash 

 and tributaries (Evermann), Green River, Kentucky, and Black, Poteau, 

 and Washita rivers, Arkansas; locally common. {hiHtrio, a harlequin.) 



Elhenstoma (lloreitlra) hiytrio, Jordan & Gilbert, Proc. V. S. Nat. Mus., 1887, 47, Poteau River, 

 near Hackett City, Arkansas; Saline River at Benton, and Washita River at 

 Arkadelphia, Arkansas. (Type, Noe. 3(5380, 3C409, 30448. Coll. Jordan & Gilbert.) 



FAheosloma Imlrio, JoRD.w, Bull. U. S. Fish Couim., viii, 1888, 1G4. 



lUocentra hislrio, Boulenoek, Cat., i, 98. 



1441. ULOCENTRA SIMOTERA (Cope). 



Head 4 to 4| ; depth 4 to 5 ; eye 3^ in head ; D. X to XII-10 or 11 ; A. 

 II, 7 ; scales 6-48 to 52-11. Body short and rather deep. Head small ; 

 the snout very obtuse with strongly curved profile, almost as blunt as 

 in Diplesion hlennioides. Cheeks, opercles, and breast naked or partly 

 scaly. Dorsal fins well separated ; pectoral a little longer than head ; 

 lateral line complete. In life pale green, the dark markings green ; 

 various scales on back bronze-red in center, the neighboring scales light 

 yellow, the bronze markings forming very irregular streaks; belly pale 

 yellow, more or less flushed with bright orange ; si^inous dorsal pale at 

 base, then a black streak, then pale, each membrane with an orange spot 

 throughout the pale streak, the first two spots of a brilliant scarlet; 

 edge of the fin snufty brown ; soft dorsal with the rays pale yellowish, 

 the membranes spotted with bronze brown, a black spot at base of each 

 ray; caudal yellowish, with three wavy black bars; anal and ventrals 

 pale yellowish ; pectorals yellowish, faintly barred ; head with various 

 green markings ; a dark stripe downward and one forward from the eye. 

 Length 3 inches. An elegant and peculiar species, carrying to an extreme 

 the gobioid appearance of these fishes. Western Virginia, eastern Ken- 

 tucky and Tennessee, in the basins of the Green, Cumberland, and Ten- 

 nesee rivers, southward through Alabama to the Escambia River : very 

 abundant in clear rocky or sandy streams ; one of the handsomest of the 

 small darters, {oifioripa, comparative of cifi'ug, snub-nosed.) 



Hyostoma fimoterHm, CoPE, Journ. Ac. Nat. Sci. Phila., 1868, 215, Holston River and its 



tributaries; Vaillant, Recherches, 100, 1873, with plates. 

 Ulocenlra simoteia, Jordan & Gilbert, Synopsis, 495, 1883; Boulengeb, Cat., i, 97. 

 Arlhia alripinnis,f Jordan, Bull. X, U. S. Nat. Mus., 10, 1877, tributary of the Cumberland 



River, near Nashville, Tennessee. (Type, No. 20433. Coll. A. Winchell.) 



*The following; description is taken from the specimens from Black Kiver, Black Rock, 

 Arkansas, belontiinj; to Uloceiitra hislrio, (Coll. S. E. Meek): 



Head 4>i; depth o%; eye 4; snout 3^; D. IX-9; A. II, 7; scales 6-56-7, lateral Hue complete; 

 cheeks and opercles nearly naked, a few scales on their upper parts; nape scaled; breast and 

 anterior portion of belly naked. Body rather robust, similar in form to Pii'ciliihlhijs::<)milix. Head 

 heavy; snout short, sharply decurved; mouth small, horizontal, the lower jaw included: upper 

 jaw with a slight frenum, premaxillaries slightly protractile; gill membranes broadly united: 

 teeth in jaws well developed. Fins rather high; pectorals large, their tips reaching pa.«t tips 

 of ventrals. Color dark olivaceous, much mottled with darker: six dark dorsal blotches; top of 

 head and base of caudal black; spinous dorsal with a broad dark margin across top of spines and 

 downward on first menibraue; all the other fins irregularly barred and dotted with black or 

 dark brown; a dark vertical bar above base of ventral; a series of dark spots on postocular and 

 a dark line downward from eye; snout and lower parts of head with some spots. 



t The description of this form is substantially as follows: 



noceii/ca o/n>iHHis (Jordan).— Head 4'^: depth 4^.;. D. XII-10 or 11; A. II, 7. Body rather 

 short, somewhat compressed behind. Head e.\tremely short and deep, the snout very short and 

 abruptly rounded, as in Vhcentra siniotera. Eye large. Gill membranes broadly united. Mouth 



