122 THE CYPRINODONTS. 
On some of the darker types, Plate X. Fig. 8, the spots form narrow longi- 
tudinal stripes. A black blotch extending from the eye down and backward 
is rarely absent. Narrow vertical bars of brown across the flanks are com- 
monly present, sometimes as many as eighteen; on forms like those shown on 
Plate X. Fig. 6 and 9, the bars are obsolete. Fins marked with small dots, 
sometimes in two or more regular transverse series, frequently plain, clouded, 
or puncticulate. Top of head darker, in many cases with a silvery spot on the 
occiput; frequently light to whitish above the snout and between the eyes. 
Occasionally the spaces between the bars on the flanks are silvery. Cheeks 
silvery to bronzed. 
Alabama to Iowa and Virginia. 
Zygonectes sciadicus. 
Plate II. Fig. 1, teeth. 
Fundulus sciadicus Cope, 1865, P. Phil. Ac., 78, 316. 
Haplochilus sciadicus Gth., Cat., VI, 316. 
Zygonectes sciadicus Jor. & C., 1877, B. Buf. Soc., III, 142; Jor., 1887, R. U. S. F. Com., 837. 
Zygonectes (Micristius) sciadicus Jor., 1878, B. U. S. G. Sur., IV, 438; Jor. & G. 1882, B. 16 U.S. 
Mus., 342. 
Haplochilus floripinnis Cope, 1874, P. Am. Phil. Soc., 138, ext. p. 12; Cope & Y., 1875, Zool. Wheel. 
Exp., V, 695. 
Zygonectes floripinnis Jor. & C., B. Buf. Soc., III, 142; Jor., 1878, B. U. 8. G. Sur., TV, 483, — 1887, 
R.,U. 8S. F. Com., 837, —1891, B. U. S. F. Com., IX, 8; Jor. & G., B. 16 U.S. Mus., 339. 
Var. lineatus. 
Zygonectes lineatus Garm., 1881, B. M. C. Z., VIL, 88; Jor. & G., 1882, B.16 U.S. Mus., 339; Jor., 
1887, R. U.S. F. Com., 837. 
Zyyonectes Macdonaldi Meek, 1891, B. U.S. F. Com., TX, 122, 126, pl. 42, fig. 1. 
Fundulus albolineatus Gilb., 1891, B. U. 8. F. Com., TX, 141, pl. 43, fig. 1. 
B.5; D. 10-11; A.12-14; V.6; P. 14-16; Ll. 36-39; Ltr. 11-13; 
Vert. 15+ 18. 
Compressed behind the head, depressed on head, flattened on crown; 
caudal pedicel moderately deep. Head as broad as deep, two sevenths of the 
length to the base of the caudal, more than depth of body. Snout rounded 
at the end, as long as the eye. Mouth wide, slightly oblique; lower jaws 
longer, firmly united; upper shorter, protractile. Teeth conical, hooked, in 
bands, outer series larger. Eye large, as long as the snout, or longer in 
young, three fifths of forehead, two sevenths of head. Origin of dorsal 
behind the middle of the total length, a very little backward of that of anal. 
Anal larger than dorsal and opposed, origin a trifle in advance; like the dor- 
sal this fin is rather pointed. Caudal medium, varying from much to little 
convex on the hind border. Ventrals small, not reaching the anal, varying: 
