49. CYPRINODONTID^ GAMBUSIA. 
345 
normal. Scales large. Dorsal and anal fins both rather short, the anal 
more or less in advance of the dorsal ; anal fin of the male modified into 
a long intromittent organ, and much advanced. Intestinal canal short. 
Branchiostegals 6. Small fishes inhabiting the fresh waters of Mexico, 
Cuba, and the Southern States. The numerous species are imperfectly 
known. 
(“The name owes its etymology to the provincial Cuban word. Gamhusino, which 
signifies nothing, with the idea of a joke or farce. Thus one says ‘to fish for Gambu- * 
sinos’ when one catches nothing.” — Poey.) 
562. Cr. patraseljs (B. & G.) Girard. 
Snout broad, subspatulate, the lower jaw projecting. Eye longer 
than snout, 3 in head, 1^ in interorbital space. Anal process in ^ 
longer than head, not curved at its extremity. Caudal peduncle rather 
elongate. A faint dark line across uj)per part of trunk; sometimes 
series of dark dots on sides of body; an oblique dark band below orbit; 
caudal with dark spots; coloration sometimes uniform. Head 3§; 
depth 4. D. 8; A. 9; scales 32-8. South Carolina to Mexico; abun- 
dant in lowland streams. 
{Ueterandria liolhrooM Agassiz MSS.: Gambusia liolbroohi Girard, Proc. Acad. Nat. 
Sci. Phila. 1859, 61: Gambusia holbroolci Gunther, vi, 334: Reterandria patrucUs B. & 
G. Proc. Acad. Nat. Sci. Phila. 1853, 390; Girard, U. S. Mes. Bound. Surv. Ichth. 72.) 
563. Cr. liiimilis Gunther. 
Slender; anal larger than dorsal, and much anterior to it. Olive; 
dorsal and caudal with narrow blackish cross-bars. Head 4J. D. 6; 
A. 9. Matamoras. {Girard.) 
{Gambusia gracilis Girard, Proc. Acad. Nat. Sci. Phila. 1859, 121, i)reoccupied ; 
Gunther, vi, 335.) 
561. O. arlingftouia Goode & Bean. 
Uniform brownish olive; fins with a few blackish dots. Snout 
broad. Lower jaw projecting. Eye longer than snout, 3 in head. Dor- 
sal inserted midway between posterior margin of eye and tip of tail. 
Pectorals reaching ventrals; ventrals to vent. Head 3^; depth 4. D. 
9; A. 11; Y. 6; Lat. 1. 33; L. transv. 11. Arlington Eiver, Florida; 
known from females only, and very likely a Zygonectes. 
(Goode & Bean, Proc. U. S. Nat. Mus. 1879, 118.) 
losed together. Mandible long, somewhat prominent ; both jaws with a broad band 
of cardiform teeth. Scales rather small. Anal in advance of dorsal, modified in the 
male into an intromittent organ. Branchiostegals 6. Intestinal canal short. Car- 
nivorous. Mexico. (Belone; Esox.) 
B. ielizanus Kner. 
Slender. Olivaceous ; sides with series of brown dots ; a black spot at root of cavidal. 
Head 3; depth 5|. D. 9; A. 10; scales 60-18. Mexico and Central America. {Kner.) 
(Einer, 1. c. ; Giinther, vi, 333.) 
