49. CYPRINODONTID^E FUNDULUS. 335 



dd. Cross-bars silvery. 



e. Teeth in bands, the outer not enlarged. 



54O. F. niCBKOiia Jordan & Copeland. 



Body elongate, slightly compressed, not elevated; head long and large, 

 rather narrow above, the iuterorbital space half wider than eye, which 

 is 4 in head. Dorsal moderate, inserted in advance of the anal, which 

 is short and deep; paired fins short; vent midway between eye and base 

 of caudal. Color ($) dark olive brown, with about 16 shining, silvery, 

 vertical bands, which are narrower than the dark interspaces; the inter- 

 spaces broadest behind; fins plain; teeth pointed, curved, outer little 

 enlarged. Head 3| ; depth 5. D. 12; A. 10; B. 5; scales 48-12. L. 

 3i inches. Eock River, Wisconsin. 

 (Jordan & Copeland. Proc. Acad. Nat. Scl. Phila. 1377, 68.) 



ee. Teeth in about two series, the outer enlarged. 



.'541. F. adaatia J. & G. nom. sp. nov. 



Body short, deep, and compressed; head moderate, broad, and flat 

 above, the interorbital space rather more than half greater than the 

 width of the eye; eye 4 in head; dorsal and anal fins rather large; dor- 

 sal inserted almost exactly over fiont of anal ; teeth mostly in two series, 

 the outer very strong; vent midway between eye and base of caudal; 

 scales small, closely imbricated. Color olivaceous, with 15 to 20 silver 

 cross-bars, almost as wide as the interspaces posteriorly, wider than the 

 interspaces anteriorly, extending over the belly and joining their fellows 

 on the opposite side ; the bands variable, but usually wider and more 

 crowded than in F. menona ; fins plain. Head 3f ; depth 4. D. 13; 

 A. 11; scales 44-15. L. 2 inches. Coast of Texas, ascending streams; 

 our specimens from the Rio Grande. 



(? Adinia mu-liifasciata Girard, Proc. Acad. Nat. Sci. Phila. 1859, 117: Fundulus zebra 

 Jordan. Bull. U. S. Geol. Surv. Terr, iv, No. 2, 1878, 664. Not Hydrargyra multifasciata 

 Le Sueuf, nor Hydrargyra zebra Grd., nor Fundulus zebra Dekay.) 



cc. Scales rather large, less than 40 in a longitudinal series. 



/. Males with 9 or 10 silvery cross-bars; females with black vertical stripes; fins 

 plain. 



542. F. nigrofasciatus ( Le S.) C. & V. 



Body rather short and deep; head rather long and depressed; the 

 snout obtuse, a slight angle being formed above the eye; dorsal mod- 

 erate, well back; anal short and deep; eye longer than snout, H in 

 iuterorbital space, ;3.^ in head. Olivaceous above, silvery below ; fins 

 in both sexes immaculate; males with 9 or 10 very distinct silvery 



