100 THE CYPRINODONTS. 
opercle is silvery, and across the upper edge there is a darker streak. The 
largest male at hand is four and three fourths inches in length; the largest 
female five and three fourths. 
Of this species there are several varieties beside the typical hetercolitus : 
Bermude from the Bermudas, dadius from Grand Menan, and pisculentus of 
the coasts of New England. 
Eastern coasts of the United States and Canada to Bermuda. 
Fundulus parvipinnis. 
Plate II. Fig. 3, 4, teeth. 
Fundulus parvipinnis Grd., 1854, P. Phil. Ac., VII, 154, —1859, P. R.R. Rep., X, Fish, 303; Blkr., 
1860, Cypr., 487; Gthr., 1866, Cat., VI, 319; St., 1876, Sb. Ak. Wien, LXXTV, ext. 153, pl. 10, fig. 1-2 ; 
Jor. & C., 1877, B. Buf. Soc., III, 141; Jor., 1878, B. U.S. G. Sur., IV, 433; Smith, 1880, List Fish San 
Diego, —1884, P. U. S. Mus., VI, 233, — 1885, W. Am. Sci., 54; Bean, 1881, P.U. S. Mus., III, 105 ; 
Jor. & G., 1881, P. U. S. Mus., IIT, 30, 457, —1882, P. U. S. Mus., IV, 42, —1883, P. U. S. Mus., V, 
355; Jor. & J., 1882, P. U. S. Mus., IV, 13; Hig., 1892, Ann. Lye. N. Y., VI, 352,—P. U. 8S. Mus., 
XV, 142. 
Fundulus (Hydrargyra) parvipinnis Jor. & G., 1882, B. 16, U. 8. Mus., 333; Jor., 1887, R. U. S. F. 
Com., 836. 
Fundulus punctatus Gthr., 1866, Cat., VI, 320, —1868, Tr. Z. Soc., VI, 482, pl. 84, fig. 5; Jor., 1886, 
P. U. S. Mus., VIII, 368; Hig., 1893, P. U. S. Mus., XVI, 56. 
Fundulus guatemalensis Gthr., 1866, Cat., VI, 321, — 1868, Tr. Z. Soc., VI, 482, pl. 84, fig. 3-4; Jor., 
1886, P. U. S. Mus., VIII, 368; Hig., 1891, P. U. S. Mus., XIV, 64, — 1893, P. U. S. Mus., XVI, 56. 
Fundulus pachycephalus Gthr., 1866, Cat., VI, 321,— 1868, Tr. Z. Soc., VI, 483, pl. 84, fig. 6; Jor., 
1886, P. U. S. Mus., VIII, 368; Hig., 1893, P. U.S. Mus., XVL, 56. 
Fundulus vinctus Jor. & G., 1882, P. U. S. Mus., V, 855; Jor., 1886, P. U.S. Mus., VIII, 368, — 
1887, R. U. 8. F. Com., 837. 
Fundulus lima Vaill., 1894, Bull. Soc. Philom., (8) VI, 71. 
Var. labialis. 
Fundulus labialis Gthr., 1866, Cat., VI, 319, — 1868, Tr. Z. Soc., VI, 481, pl. 84, fig. 1, 2; Hig., 1893, 
P. U.S. Mus., XVI, 56. 
Fundulus robustus Bean, 1892, P. U. 8. Mus., XV, 285, pl. 44, fig. 2. 
B. 5; D. 138-15; A. 12-16; V.6; P. 18-20; Ll. 34-36; Ltr. 12-14; 
Vert. 15+ 19. 
From the side this fish bears some resemblance to F’. heteroclitus ; but the 
head is smaller, and seen from above head and shoulders are more com- 
pressed. Head somewhat narrow and pointed, about one fourth of the total 
length, or a little more than the depth of the body ; crown flattened. Snout 
comparatively narrow, blunt, as long as the eye. Mouth medium, lower jaw 
longer, upper protractile. Teeth conical, hooked, in bands, outer series 
larger; pharyngeal with a shoulder, median swollen and molar-like. Eye 
large, as long as snout, one fourth of the head, two thirds to three fifths of 
the interorbital space. Dorsal origin near the middle of the total length, a 
