Jordan and Rvermann. — Pishes of North Amerira. 683 



length of snout, 3 in head, antl ff width of interoibital 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.) 



Gambmia nkaragiieusis, GiiNTHKit, Cat., vi, 336, 18G6, lakes of Nicaragua. ((!()11. Ca])t. Bow.) 



100.1. GAMBUSIA GRACILIS, Heckel. 



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

 Origin of dorsal fin nearly iji 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 1 of its 

 distance from the caudal. A dark band runs from the ui)per end of the 

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

 slender.) 



Xipliophonts gravilk, Heckel, Sitzgsber. Akad. Wiss. Wien, i, 300, 1848, Orizaba, Mexico. 

 Ganibtisia gracilis, GiiNTHEU, Cat., vi, 336, 1866 ; Jordan &. Gilbert, Synopsis, 346, 18,s:!. 



1004. (JAMBUSIA EPISCOPI, Steiudachner. 



Head3ito3f; depth, male, 4; female, 3| to 3f ; eye 3 in head. D. 8or9; 

 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 

 OMspo = Episcopus = bishop.) 

 Gombnsia episcopi, Steindachneu, Iclith. Beitriige, vi, 9, 1S78, Obispo, near Panama. 



1005. (JAMBUSIA PIC'TURATA, 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 I'i inches. 

 Cuba. (Poey); not seen by us. (pict ura f iis, iticUiiod.) 



Gambusia pielurcUa, Poey, Synopsis, 410, 1868, San Diego de los Bancs, Cuba. 



