THE CYPRINODONTS. 107 
Fundulus Rathbuni. 
Plate Il. Fig. 9, teeth, 
Fundulus (Xenisma) rathbuni Jor., 1889, P. U. S. Mus., XI, 351, 356, pl. 44, fig. 7. 
B. 6 (rarely 5); D. 11-12; A. 12-13; V.6; P. 16-17; Ll. 36; Ltr. 12- 
13; Vert. 16+ 19. 
From intermediate between that of F. catenatus 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 
seales 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 difli- 
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 Il, Fig. 11, teeth. 
Pacilia catenata Stor., 1846, Syn., 178, — Mem. Am. Ac., I], 430. 
Hydrargyra catenata Ag., 1854, Am. Jour. Sci., XVII, 355, extr, p. 15; Blkr., 1860, Cypr., 486; Pat., 
1863, B. M. C. Z., 7. 
FPundulus catenatus Gthr, 1866, Cat., VI, 322; Cope, 1869, J. Phil. Ac., 238, — 1877, P. Am. Phil. 
Soc., XI, 456; Jor., 1887, R. U. S. FP. Com., 837; Jor. & G., 1887, P. U.S. Mus, IX, 5, 19; Gilb., 1891, 
B. U. 8. F.C., TX, 149; Meek, 1891, B. U. S. F. Com, IX, 118, 192, 150, 134, 158, 146; Kir., 1992, B 
