80 THE CYPEINODONTS. 



Mexico, and the Pacific coast of Central America. Largest eight and a half 

 inches in length. Reaching a length of ten inches or more. 



GAMBUSIIN^. 

 BELONESOX. 



Belonesox Kner, 1860, Sb. Ak. Wien, XL, 419; Blkr., 1863, Atl. IcMb., Ill, 140; Gthr., 1866, Cat, 

 VI, 333. 



Belonesoeini Blkr., 1863, Atl., Ill, 140. 



Elongate, compressed ; head long, pointed ; caudal region moderately 

 deep. Snout long, pointed ; both jaws produced, lower longer. Mouth 

 wide, much developed laterally. Teeth numerous, simple, in cardiform 

 bands. Intermaxillaries not anchylosed, but together forming an elongate 

 triangular plate. Mandibles elongate. Scales medium. Anal modified in 

 the male. Dorsal and anal behind the middle of the body, the former 

 originating farther backward. Intestine short. 



Central America to Mexico. 



Belonesox belizanus. 



Belonesox belizanus Kner, 1860, Sb. Ak. Wien, XL, 419, with plate ; Blkr., 1863, Atl. Iclith., in, 140 ; 

 Gtlir., 1866, Cat., VI, 333 ; Jor., 1887, P. U. S. Mus., IX, 564 ; Eig., 1893, P. U. S. Mus., XVI, 57. 



B. 6 ; D. 9 ; A. 10-11 ; V. 6 ; LI. 56-63 ; Ltr. 18. 



Head one third or more and depth of body one fifth or less of the length 

 to the caudal. Upper surface of intermaxillary plate as long as postorbital 

 part of head. Base of dorsal in females equals half its distance from the 

 caudal, in males more than half. Anal process of male two thirds as long 

 as head, composed of three rays. Base of dorsal farther back than that of 

 anal. Caudal broad, hind margin convex. 



Brownish olive above ; flanks with black dots in longitudinal series ; a 

 black spot on the middle of the base of the caudal. 



Honduras; Guatemala; Mexico. (Giinther.) 



PSEUDOXIPHOPHORUS. 



Pseudcrlphophorus Blk., 1S60, Cypr., 482, — 1863, Atl. Iclith., Ill, 140 ; Gth., 1866, Cat., W, 332. 

 Paeiliodes Steind., 1863, Sb. Ak. Wieu, XLVIII, 176. 



Shaped like Gambusia. Body compressed, caudal pedicel steep ; head 

 depressed, crown flat. Snout broad, blunt ; chin steep. Mouth large, wide ; 



