Jordan and Evermann. Fishes of North America. 683 



length of snout, 3 in head, and f width of iiiterorbital space. In the 

 female the origin of the dorsal is somewhat nearer tip of caudal than 

 tip of snout, opposite last ray of anal; pectorals not quite reaching 

 as far backward as the ventrals, which terminate immediately in front 

 of anal ; free portion of tail rather short ; length of base of anal about 

 half its distance from caudal. Brownish olive above, sometimes with a 

 series of black dots along the rows of scales; dorsal and caudal fins 

 crossed by series of black dots; middle of anal blackish. Lakes of 

 Nicaragua. (Giinther.) 



Gambusia nicaraguensis, GtJNTHEB, Cat., vi, 336, 1866, lakes of Nicaragua. (Coll. Capt. Dow.) 



1003. GAMBUSIA GBACILIS, Heckel. 



Head 4; depth 3f to 4, deepest in female. D.8; A. 8 or 9; V. 6; scales 29-7. 

 Origin of dorsal fin nearly in middle of total length, but little behind that 

 of anal fin in the female ; anal process of male nearly twice as long as 

 head, its extremity bent; pectorals reaching beyond root of ventrals; 

 anal fin short in the female, the length of its base being at least i of its 

 distance from the caudal. A dark band runs from the upper end of the 

 gill opening to the caudal. (Heckel.) Orizaba, Mexico, (gracilis, 

 slender. ) 



Xiphophorus gracilis, HECKEL, Sitzgsber. Akad. Wiss. Wien, i, 300, 1848, Orizaba, Mexico. 

 Gambusia gracilis, GtJNTHER, Cat., vi, 336, 1866; JORDAN & GILBERT, Synopsis, 346, 1883. 



1004. GAMBUSIA EPISCOPI, Steindachner. 



Head3ito3f; depth, male, 4; female, 3| to 3f; eye 3 in head. D.8 or 9; 

 A. 10 ; scales 28-7. Body elongate, the males slenderest ; interorbital 

 width 2 ; snout broad, depressed, the lower jaw prominent; outer teeth 

 a little stronger; insertion of dorsal in female about in middle of length ; 

 pectoral reaching ventral ; anal longer than head in males. Body in both 

 sexes with numerous dark cross bands, which posteriorly reach the belly, 

 but which are wanting before the dorsal in the females ; sometimes a row 

 of dark spots from pectoral to caudal ; bands sometimes faint, replaced 

 by a dark blotch on middle of sides below front of dorsal ; edges of scales 

 with dark dots ; usually a black blotch on middle of base of anal ; rows 

 of dark spots usually present on dorsal and anal. Length If inches. 

 Ditches on the isthmus of Panama, at Obispo Station, (hence the name 

 OUspo Episcopus = bishop.) 

 Gombusla episcopi, STEINDACHNER, Ichth. Beitrage, vi, 9, 1878, Obispo, near Panama. 



1005. GAMBUSIA PICTUBATA, Poey. 



A male specimen imperfectly described. Depth equal to length of 

 head, about 5 times in total length with caudal ; eye occupying second 

 third of head. Dorsal beginning a little before middle of length; anal 

 much farther forward, its longest rays i length of body ; ventrals very 

 small; caudal rounded ; whole body black, marbled with yellow ; golden 

 in life. Iris silvery, with a dark lengthwise band. Length If inches. 

 Cuba. (Poey); not seen by us. (picturatus, pictured.) 

 Gambusia picturata, POEY, Synopsis, 410, 1868, San Diego de los Banos, Cuba. 



