1036 Bulletin ^7, United States National Museum. 



142o. HADROPTKIUS KOANOKA (Jordan & Jenkins). 



Head 3f to 4 ; depth \\ to 4f ; eye 4^ to 4f in head, about as long 

 as snont. D. X or XI-ll ; A. II, 8 or 9 ; scales 5-48-9, pores 41 to 50. 

 Body decidedly robust, moderately compressed, the back elevated. Head 

 broad, heavy, tapering forward, the snout moderately blunt at tip, then 

 nearly straight from before eye backward to occiput. Premaxillaries not 

 protractile. Maxillary 3| in head, reaching front of pupil. Mouth small, 

 little oblique, low, the lower jaw included all around; teeth rather strong. 

 Cheek scaleless, usually 2 or 3 small scales on upper part of opercle, the 

 head often quite naked ; nape and breast naked ; middle line of belly 

 with about 8 moderately enlarged scales ; preopercle entire ; opercular 

 spine moderate; gill membranes very slightly connected; lateral line 

 complete ; dorsal fins moderate, contiguous ; anal large, its spines large, 

 the first strongest ; pectoral about as long as head, reaching beyond ven- 

 trals to vent ; caudal slightly lunate. Color straw yellow, the males 

 dark green ; sides with 10 or 11 vertical cross bars, more or less confluent 

 into a lateral band ; in the males these bands are of a deep blue green 

 and vaguely defined ; in the females they are distinctly diamond-shaped 

 and confluent along their middle, forming a broad band, with both edges 

 serrate ; male with lower parts and paler parts of head bright sulphur 

 yellow; back barred and mottled with dark; nape with a pale spot; 

 head dark blue in males, with a black bar forward and one downward 

 from eye; lips orange. Fins in male nearly plain blue-black ; first dorsal 

 with a median baud of very bright yelloAv, its base with a black band, 

 its edge narrowly black ; second dorsal and anal faintly barred ; some 

 orange yellow on ventrals, anal, and soft dorsal ; 2. yellow spots at base 

 of caudal, the upper forming a curved streak above the last of the dark 

 lateral spots. Females paler, yellowish below, the markings black and 

 less diffuse, the second dorsal and caudal sharply barred. Length 2^ 

 inches. Roanoke River, Virginia ; common ; a beautiful species of the 

 mountain streams. 



Ellieostoma ronnoka, Jordan & Jenkins, Proc. U. S. Nat. Mus., .SSS, 1888, Roanoke River at 

 Roanoke, Salem, and Alleghany Springs, Virginia. (Type, No. 39866. Coll. .Jordan, 

 Evennann, and Jenkins.) 



Pereina romutlca, Boulenger, Cat., i, 62. 



Subgenus ERICOSMA, Jordan & Copeland. 

 1426. HADROPTERUS EVIDES* (Jordan & Copeland). 



Head 4^; depth 5^; eye rather large, high, 3+ in head. D. XI-10; A. 

 II, 8 or 9; scales 9-52 to 67-9 to 11 ; vertebrae 18 + 22 = 40. Body mod- 

 erate, somewhat compressed. Head heavy, the profile rather convex. 

 Mouth moderate, somewhat oblique, the lower jaw included ; maxillary 

 reaching front of eye. Cheeks, neck above, and throat naked; opercles 

 with rather larger scales, caducous; ventral plates little enlarged. Fins 

 large; pectorals long; second dorsal lower than anal, but with longer 



>■ Dr. Boulenger places this well-marked species in the synonymy of "Pereina pellala.' 

 tto warrant for this arrangement. 



There 

 ia no 



