96 HAPLOMI. 
5. Gambusia nicaraguensis. 
Gambusia nicaraguensis, Giinth. Cat. Fish. vi. p. 336 (1866) ', and Trans. Zool. Soe. vi. 1868, p. 483, 
t. 82. fig. 3°; Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 682°. 
Paragambusia nicaraguensis, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 133‘. 
Depth of body 2% to 33 in the length, length of head 33 to 3%. Snout shorter than eye, the diameter of which 
is 23 to 3 in the length of head. Interorbital width about equal to the distance from middle of eye to 
free edge of operculum. 28 to 30 scules in a longitudinal series. Dorsal 7-8; origin nearer to posterior 
end of caudal fin than to tip of snout; free edge of the fin straight. Anal 10-11, pointed, with concave 
free edge, ending below the origin of dorsal. Pectoral nearly as long as the head. Caudal rounded. 
Least depth of caudal peduncle 2 to 2 the length of head. Olivaceous: a small dark spot at the base of 
each scale on the upper part of the body; dorsal and caudal with series of small dark spots. 
Hab. SoutHerN Mexico AND CENTRAL AMERICA: 
Mexico, Boca del Rio 4, Otopa4, El Hule 4, Obispo 4, and Perez‘ in Vera Cruz; 
Nicaragua, Lake Nicaragua 12 (Dow). 
Here described from several specimens measuring up to 55 mm. in total length, the 
types of the species from Lake Nicaragua and examples from El Hule, received from 
Dr. Meek. 
6. Gambusia infans. 
Gambusia infans, Woolman, Bull. U.S. Fish. Comm. 1894, p. 62, t. 2. fig. 8; Jord. & Everm. 
Bull. U.S. Nat. Mus. xlvii. 1896, p. 680°; Meek, Publ. Columbian Mus., Zool. v. 1904, 
p. 131, fig. 38°. 
Gambusia gracilis, Meek, t. c. p. 180%. 
Depth of body 31 to 34 in the length, length of head 4 to 44. Snout nearly as long as or shorter than eye, 
the diameter of which is 3 to 34 in the length of head. Interorbital width about equal to the distance 
from middle of eye to free edge of operculum. 29 to 31 scales in a longitudinal series. Dorsal 8-9; 
origin usually nearer to posterior end of caudal than to tip of snout; free edge of fin slightly convex. 
Anal 9-10, pointed, ending below anterior rays of dorsal. Pectoral + the length of head. Caudal 
rounded or subtruncate. Least depth of caudal peduncle 2 to 3 the length of head. Olivaceous ; scales 
with narrow dark edges ; often a dark stripe from operculum to caudal. 
Hab: Mexico, Rio Lerma and Rio Balsas: 
Salamanca!; Celaya®; Ocotlan *; La Barca?; Huingo®; Yautepec *; Cuautla‘; 
Puente de Ixtla*; Jojutla*; Chietla*; Balsas *. 
Here described from several specimens, measuring up to 50 mm. in total length, from 
Salamanca (Woolman), Celaya and Puente de Ixtla (Meek). A male of 20 mm. is 
marked with dark vertical bars. 
7. Gambusia episcopi. 
Gambusia episcopi, Steind. Sitzungsb. Ak. Wien, Ixxvii. 1878, p. 387, t. 2. figs. 3 & 4°. 
Hab. PANAMA 1 
