THE CYPRINODONTS. 107 



Fundulus Rathbuni. 



Plate II. Fig. 9, teeth. 



Fundulus (Xenisma) raMmi Jor., 18S9, P. U. S. Mus., XI, 351, 356, pi. ii, fig. 7. 



B. 6 (rarely 5) ; D. 11-12 ; A. 12-13 ; V. G ; P. 16-17 ; LI. 36 ; Ltr. 12- 

 13; Vert. 16 + 19. 



From intermediate between that of F. catcnatus and that of F. heteroclitus, 

 with nearer approach to the latter. Body stout, compressed, caudal region 

 deep. Head broad, one fourth of the total length ; crown flat. Snout 

 medium, blunt ; chin moderately steep. Mouth wide ; lower jaws longer, 

 upper protractile. Teeth conical, in bands, outer series longer ; pharyngeal 

 with a shoulder, a few stout and thick, groups small, as in heteroclitus. Eye 

 large, as long as snout, three and one third times in the head, two thirds of 

 the interorbital space. Pectorals and ventrals small. Dorsal and anal elon- 

 gate, acuminate posteriorly. Dorsal origin close to the middle of the total 

 length. Base of anal shorter than that of dorsal, opposed. Caudal deep, 

 rounded on hind margin. Oviduct slightly extended on the anal. 



Olivaceous, light to rusty, lighter below, silvery on cheeks, white on 

 throat ; with few to many small spots of brown on head and flanks. The 

 spots sometimes form short bars, becoming more or less confluent. Edges of 

 scales darker, forming reticulations. The specimens examined are without 

 large spots on the fins. On the bases of the caudal rays there are some 

 small ones, and on the dorsal there are a few faint indications of others. If 

 it were not for the six branchiostegal rays, in most cases, it would be diffi- 

 cult to find reasons for separating this species from F. heteroclitus ; to which 

 it would bear much the same relationship as exists between the brown 

 spotted and the silver flecked individuals of F. grandis. About three 

 inches. 



Fresh waters of North Carolina. 



Fundulus catenatus. 



Plate II. Fig. 11, teeth. 



Poecilia eatemta Stor., T84fi, Syn., 178, — Mem. Am. Ac, II, 430. 



Hydrargi/m catenata Ag., 1854, Am. Jour. Sei., XVII, 353, extr. p. 15 ; BIkr., 1860, Cypr., 436 ; Put., 

 1863, B. M. C. Z., 7. 



Fundulus catenatus Gtlir., 1866, Cat., VI, 322 ; Cope, 1869, J. Phil. Ac, 238, — 1877, P. Am. Pbil. 

 See, XI, 456 ; Jor., 1887, R. U. S. F. Com., 837 ; Jor. & G., 1887, P. U. S. Mus., IX, 5, 12 ; Gilb., 1891, 

 B. U. S. F. C, IX, 149 ; Meek, 1891, B. U. S. F. Com., IX, 118, 122, 130, 134, 138, 146 ; Kir., 1892, B. 



