no Field Columbian Museum — Zoology, Vol. VII. 



state. The Guapote and Roballo only are regarded as its superior. 

 Momotomba (i), i6o mm.; Managua (2), 130 and 160; Granada 

 (3). 235 mm. 



Genus Braiiiocliarax Gill. 



Two species of this genus occur in the lakes. 

 a. Body robust, its depth 2.7 in length, bransfordi no 



aa. Body slender, its depth 3.4 to 3.9 in length. elongatus no 



Bramocharax bransfordi Gill 



Bramocharax bransfordi Gill, Proc. Acad. Nat. Sci., Phila., 1877, 



190, Lake Nicaragua. 

 I did not secure any specimens of this species. 



Bramocharax elongatus sp. nov. Sabalito. 



Type, No. 5922, F. M. N. H.; length, 130 mm.; Lake Managua, 

 Managua, Nicaragua. 



Head 3.1 to ;i.;i; depth 3.4 to 3.9; D. 10; A. 25 to 28; scales 

 8-41-6. Body elongated, compressed; snout slender, pointed, the 

 upper jaw slightly the longer; snout 3.2 to 3.4 in head; maxillary 

 long and slender, its tip reaching to vertical from middle^ of pupil, 

 2.1 to 2.2 in head; mandible 2 in head; diameter of eye 3.6 to 4.0 in 

 head; teeth in each jaw in one series; two anterior teeth of each jaw 

 enlarged and canine-like, the upper ones extending beyond tip of 

 lower jaw; one or two lateral teeth in lower jaw enlarged; all the 

 teeth more or less compressed, the smaller ones, especially those on 

 edge of maxillary, with one or two basal cusps; gill rakers 9-1-11; 

 origin of dorsal slightly behind ventrals, its distance from tip of snout 

 1.9 to 2.0 in body; base of dorsal fin 2.2 to 2.4 in head, its height 

 1.4; base of anal 3.6 to 3.8 in body; adipose fin opposite last anal 

 rays; tips of pectorals reaching nearly to or slightly past base of 

 ventrals, 1.6 to 1.8 in head; ventrals not reaching anal, 2.0 to 2.2 in 

 head; least depth caudal peduncle 3.0 to 3.2 in head; lateral line 

 decurved; caudal fin forked; air bladder in two parts, the posterior 

 about twice the size of anterior; tube connecting air bladder with 

 the oesophagus rising from anterior end of posterior lobe. 



Color olivaceous, darker above; a dark humeral sjjot; a dark 

 lateral band from upper fd'.v of oponlo to base of caudal, ending in a 

 blotch; fins all plain. 



Momotomba (4), 121 to 131 mm.; Managua («i), 11 i to 150 mm. 



