20 THE CYPRINODONTS. 



Form robust, short and deep ; body and head compressed ; back arched ; 

 crown flattened ; snout short, blunt ; caudal pedicel deep. Mouth of moder- 

 ate size, obliquely directed upward ; lower jaws longer, firmly united ; upper 

 short, protractile. Teeth in a single series in each jaw, compressed and 

 broadened toward the crowns, tricuspid. Gill membranes united, free from 

 the isthmus. Branchiostegal rays six to five. Origin of the dorsal fin in the 

 anterior half of the length, forward of that of the anal. First ray of dorsal 

 large and strong. Anal unmodified in the male. Ventrals small. Caudal 

 large, deep. Intestine long, much convolute. Species small, hardly as much 

 as two inches in length. 



United States to Brazil ; Cuba. 



Cyprinodon variegatus. 



Plate I. Fig. 1 & 2, teeth. 



Cyprinodon variegatus LaC, 1S03, Poiss., V, 486, pi. 15, f. 3; Flcm., 18-22, Phil. Zool., II, 386; 

 Cuv., 1S29, R. Au., II, 281,-1836, R. An., I, 533; Val., 1828, Hmiib. Obs., II, 165, — 18i6, C. V. 

 Poiss., XVIII, 173; Wagn., 1S2S, Isis, XXI, 1057; Stor., 18i6, S.yii., 183, —Mem. Am. Ac, 435,— 

 1867, Fish. Mass., 279; Blk., 18G0, Cvpr., 484,-1863, Atl., Ill, 139; Gill, 1861, N. A. Pish, 51,— 

 1873, N. A. Fish, 31 ; Gtk, 1866, Cat., VI, 305 ; Bd., 1873, R. U. S. F. Com., I, 826; Jor. & C, 1877, 

 B. Buf. Soc, III, 141 ; Yarr., 1877, P. Phil. Ac, 214 ; Jor., 1878, B. U. S., G. Sur., IV, 411, 432, — 1885, 

 P. U. S. Mus., VII, 322,-1887, P. U. S. Mus., IX, 26, — R. U. S. P. Com., 835; Jor. & G., 1879, 

 P. U. S. Mus., I, 384,-1882, B. 16 U. S. Mus., 329,-1883, P. U. S. Mus., V, 250,— 1887, P. U. S. 

 Mus., IX, 26; Goode, 1880, P. U. S. Mus., II, 117 ; G & B., 1880, P. U. S. Mus., II, 151,-1883, 

 P. LT. S. Mus., V, 239 ; Bean, 1881, P. U. S. Mus., Ill, 104,-1889, B. U. S. F. Com., 132, 148,-1892, 

 P. U. S. Mus., XIV, 92 ; Jor. & E.,1888, P. U. S. Mus., X, 269; Heush., 1891, B. U. S. F. Com., IX, 374; 

 Smith, 1892, B. U. S. F. Com., X, 64, pi. 18, f. 1, 2. 



Le Cyprinodon varU Cuv., 1817, R. An., II, 199. 



Esox ovinits Mitch., 1S15, Tr. L. & P. Soc. N. Y., I, 441, pi. 4, f. 7. 



Pcecilia (^Cyprinodon) variegatus Goldf., 1820, Handb., II, 17. 



leliias riiomboidalis Val., 1828, Ilumb. Obs., II, 160, pi. 51, f. 3 & 7 ; Wagn., 1828, Isis., XXI, 1055 ; 

 Guer., 1838, Icon., Poiss., 28. 



Cyprinodon ovinus Val., 1828, Ilumb. Obs., II, 164 ; Wagn., 1828, Isis, XXI, 1056 ; Rich., 1837, 

 Sixth R. Br. Assoc, 213; Bd. 1855, Ninth R. S. Inst., Extr. p. 31. 



Lebias ovinus DeK., 1840, N. Y. G. Sur., 29,-1842, Fish N. Y., 215, pi. 27, f. 84. 



Lebia ellipsoidea Lcs., 1821, J. Phil. Ac, II, p. 5, pi. 2, f. 1-3 ; Rich., 1837, Sixth R. Br. Assoc, 213. 



Leiias el/ipsoides DeK., 1842, Fish N. Y., 216; Ayres, 1843, J. B. N. H. Soc, IV, 265 ; Stor., 1846, 

 Syn., 179, — Mem. Am. Ac, II, 431. 



Var. gibboBus. 



Cyprinodon giljbosus B. & G., 1854, P. Phil. Ac, VI, 1853. p. 390 ; Grd., 1859, Mcx. Bd. Sur., Fish, 

 67, pi. 38, f. 1-7 ; Blk., 1860, Cypr., 484 ; Jor. & C, 1877, B. Buf. Soc, III, 141 ; Jor., 1878, B. U. S. 

 G. Sur., IV, 432 ; Jor. & G., B. 16 U. S. Mus., 329 ; G. & B., 1883, P. U. S. Mus., V, 239 



Cyprinodon Riverendi Jor., 1885, P. U. S. Mus., VII, 109, 147. 



Cyprinodon variegatus gibbosus Jor., 1887, R. U. S. F. Com., 835. 



Cyprinodon variegatus Everm., 1893, B. U. S. F. Com., 1891, p. 84; Everm. & K., 1894, B. U. S. F. 

 Com., 1892. pp. GO, 75, 79, 83, 87, 89, 92, 106, pi. 22, f. 2, 3. 



Var. Riverendi. 



Trifarrius Riverendi Poey, 1861, Mem., II, 306, 383, — 1868, Rcpert., II, 411, — 1876, An. Soc. Esp., 

 V, 140. 



Irifarcius Felicianus Poey, 1868, Rcpert., II, 412, — 1876, Au. Soc. Esp., V, 140. 



