326 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
of head from between a line through back of pupils, expanding at the 
supraoccipital; the latter ends in a point; lateral line decurved forward 
thence below middle of sides to base of caudal fin. 
Teeth on premaxillary in two distinct series, 5 in the inner series of 
each side and 4 smaller ones on the outer side, a single tooth on the 
maxillary; teeth with a median triangularly pointed cusp and one or 
two tiny cusps on each side at base of median cusp. Four similar 
teeth on each side of lower jaw. 
Color.—A blackish humeral bar or spot set off by a paler area above 
and at side of it; sides of body speckled with black pigment cells; a 
black line, extending along axis of body above the lateral line more in- 
tense posteriorly ; a large blackish caudal spot at rear of caudal peduncle, 
this continuing as a black band to the distal end of the middle rays of 
caudal fin; middle of back with a narrow blackish band of pigment 
cells from occiput to dorsal origin, thence dividing and passing along 
each side of base of dorsal fin, becoming more diffuse on dorsal side of 
caudal region; all fins with scattered black pigment cells but none of 
these in spots or streaks; upper lip, lower lip, and chin heavily pig- 
mented; cheek and opercle silvery. When alive, the base of the caudal 
fin at each side of the black band on middle rays of caudal fin with a 
bright orange or crimson spot; dorsal side of each eye with a bright 
orange spot. 
Remarks.—This new species differs from all other species referred to 
the genus Gephyrocharaz in having the black caudal spot continuing 
as a black band along middle rays of caudal fin to end of that fin. The 
key on pages 322-323 will serve to identify all species in the genus 
Gephyrocharaz. 
Named venezuelae after the country by that name. 
TABLE 20.—Counts made on species of Gephyrocharax from Venezuela 
| Number of fin rays Number of scales 
Branched rays - | Along | Above lat- | Below lateral 
Species of anal Dorsal | Pectoral | Pelvic) “giges eral line line 
Padi SUE Te ite abe Wty) Sys 
25)26)27 28 29130 7lglolsigotils|6é 39/40/41/42) 5 1514) 6 1644) 5 54! 6 1645) 7 
valencia.___...--------- 1 ta Uae tay ts eee Pe i: Me WE ey Gleeteeteal] ayo sie Det en) | tis OMe al al 
venezuelae__.--_--___-_|_- 1 PA PAS OO UU eS TL TO TN a a a Pe ee Ty el 
Genus CTENOBRYCON Eigenmann 
Ctenobrycon E1GHNMANN, Bull. Mus. Comp. Zool., vol. 52, p. 94, 1908. (Type, 
Tetragonopterus hauxwellianus Cope.) 
Apodastyanz FowuER, Proc. Acad. Nat. Sci. Philadelphia, vol. 63, p. 422, 1911. 
(Type, Apodastyanax stewardsoni Fowler, a specimen without pelvic fins.) 
