49. CYPRmODOXTID.E CYPRINODON. 
329 
525. C. varaes’atuis Lac. 
Body short and deep, the back considerably arched. Mouth as in 
the others, small and terminal, numeral scale 4 times the size of the 
others. Eye longer than snout, 3.V in head, less than interorbital 
space. Origin of dorsal about midwaj’ of bod}’, behind veutrals in old 
specimens, rather in advance in the young; males with the dorsal tin 
elevated, but not reaching, when depressed, nearly to caudal. IMade 
lish dusky, with only traces of bars; caudal tin with a dusky bar at 
base and on posterior edge; tips of dorsal and anal dusky; the scales 
in the breeding season with small tubercles. Female olivaceous; sides 
silvery, with darker bars and irregular markings; a dark bar at base of 
caudal ; a dark spot on posterior part of dorsal. Head 3^ ; depth 2^. 
13. 10; A. 10; scales 25; L. trails v. 11. L* $ 2^ inches; 9 1^ inches. 
Cape Cod to Mexico, in brackish waters, entering streams. 
(Lacdptde, IJist. Nut. Poiss. v, 48G: Lehias ovinufi DeKay, Now York Fauua, Fish. 
215; Giiuther, vi, 305: Ciiprinodon horinus B. & G. Proc. Acad. Nat. Sci. Phila. 1853, 
389: Cyprinodon bovhiufi Girard, U. S. Mex. B.uind. Surv. Ichtli. 07: Cyprinodon horinus 
Giiuther, vi, 307: Cyprinodon eximius Girard, Proc. Acad. Nat. Sci. Phila. 1859, 158.) 
526. C. Baird & Girard. 
Similar to the preceding, but the Ibody still deeper and the back and 
tins still more elevated ; the scales apparently somewhat sinaber; anal 
much smaller than dorsal; coloration similar to that of 0. varicgatus. 
Ilead 2i|; depth If. D. 10; A. 11; Lat. 1. 28; L. transv. 14. Indi- 
anola, Texas. [Girard.) 
(Baird & Girard, Proc. Acad. Nat.^Sci. Phila. 1853, 390; Girard, U. S. Mex. Bound. 
Surv. Ichth. 07.) 
527 . C. Ia.tifascia(its Ganuan. 
Form and dentition of G. gibhosus. Black caudal band much wider; 
a light baud from middle of opercle to lower half of caudal ; a dark 
band above this, sejiarated by a narrower band of light from the dark 
olive of the back; silvery color of belly separated from the light band 
on the flanks by a short band of brown; fins clouded with brown; cau- 
dal with a narrow dark band across its base and a broiid one across its 
extremity. Hend 4 in total length; depth 3. .13. 12; A. 11; V. 6; P. 
14; Lat. 1. 30; L. transv. 11. Parras, Coahnila, Mex. [Garinan.) 
(Garmau, Bull. Mus. Comp. Zocil. viii. No. 3, 92, 1881.) 
528. C. elcgasas Baird & Girard. 
Body more elongate than in any of the preceding; the upper outline 
of the head less depressed, so that the profile is continuous ; fins low, 
the dorsal quite small; its rays scarcely extending to the beginning of 
