FAMILY CYPRINIDiE — HYDRARGIRA. 221 



tips reaching halfway to the base of the ventrals. Ventrals long, narrow and pointed, of six 

 rays ; their tips reaching to a little beyond the first anal ray. Anal narrow, higher than the 

 dorsal, of ten rays ; the first two short and simple, the remainder articulated and branched • 

 Caudal long and rounded. 



Color. This appears to have been olive-brown, «with numerous transverse bars across the 

 body and tail. A distinct black line in the course of the lateral line. Across the tail, on each 

 side, about one-tenth of an inch from the base of the caudal fin, is a broad black bar, which 

 appears to have been bordered with lighter in the recent specimen. Fins light olive-brown. 



Length, 2 '5. Depth, 0"4. 



Fin rays, D. 15 ; P. 15 ; V. G ; A. 10 ; C. 12 |. 



I have seen larger specimens, measuring 3' 5 in length, with a depth of 0'6. For an op- 

 portunity of describing this species, I am indebted to Mr. Z. Thomson, of Burlington, Ver- 

 mont, who has kindly favored me with other species. 



(EXTRALIMITAL .) 



H. omata. (Lesueur, Ac. Sc. Vol. 1, p. 131.) Lower jaw short and curved. Back elevated. Dorsal 

 clear blue, with yellow spots, and a larger deep blue spot. Sides blue, with sixteen transverse sil- 

 very stripes. D. 11; A. 12. Length 3 inches. Delaware river. 



H. nigrojasciata. (Id. lb. p. 133.) Dorsal and anal long and narrow. Fifteen black transverse 

 bands; reddish yellow above. Caudal slightly rounded. Length 2-3 inches. Salt marshes, 

 Newport, R. I. 



Genus Molinesia, Lesueur. Anal between the ventrals, and under the dorsal. Teeth as in Fundulus. 

 Branchial rays four or five. 



M. latipinna. (Les. Ac. Sc. Vol. 2, pi. 3, fig. 1.) Reddish. Dorsal large and long, prolonged be- 

 hind, in height equalling the depth of the body. Length 2| inches. Ponds, Louisiana. 



