122 THE CYPRmODONTS. 



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. 



Haplocliiltis sciadicus Gtli., Cat., VI, 316. 



Zygonectes sciadicus Jor. & C, 1877, B. Buf. Soc, lU, 142 ; Jor., 1887, R. U. S. F. Com., 837. 



Zygonectes (Micristius) sciadicus Jor., 1878, B. U. S. G. Sur., IV, 433; Jor. & G. 1882, B. 16 U. S. 

 Mus., 342. 



Haplochiliis Jloripinnis Cope, 1S74, P. Am. Phil. Soc, 138, ext. p. 12 ; Cope & Y., 1875, Zool. Wheel. 

 Exp., V, 695. 



Zygonectes Jloripinnis Jor. & C, B. Buf. Soc, III, 142 ; Jor., 1S7S, B. U. S. G. Sur., IV, 433, — 1887 

 R. U. S. 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., VIII, 88 ; Jor. & G., 1882, B. 16 U. S. Mus., 339 ; Jor., 

 1887, R. U. S. F. Com., 837. 



Zygonectes Macdonaldi Meek, 1891, B. U. S. F. Com., IX, 122, 126, pi. 42, fig. 1. 



Fundulus albolineatus Gilb., 1891, B. U. S. F. Com., IX, 141, pi. 43, fig. 1. 



B. 5 ; D. 10-11 ; A. 12-14 ; V. 6 ; P. 14-16 ; LI. 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. E^^e 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 reachmg the anal, varying 



