84 HAPLOMI. 
Cyprinodon eximius, Girard, Proc. Ac. Philad. 1859, p. 158*; Jord. & Everm. 1. c.*; Meek, Publ. 
Columbian Mus., Zool. v. 1904, p. 125 °. 
Cyprinodon latifasciatus, Garm. Bull. Mus. Comp. Zool. vii. 1881, p. 92", and Mem. Mus. Comp. 
Zool. xix. 1895, p. 22°; Jord. & Everm. t. c. p. 676°; Meck, |. c.”. 
ae 
oO. 
Cyprinodon elegans, Meek, t. c. p. 12 
Depth of body 2 to 22 in the length, length of head 3 to 33. Snout about as long as eye, the diameter 
of which is 34 to 4 in the length of head; interorbital width 27 to 23 in the length of head. 26 or 27 
scales in a longitudinal series. Dorsal 9-11; longest rays equal to the base of the fin or $ the length 
of head (¢) or less than the base of the fin and 2 the length of head (Q). Anal 9-11; longest rays 
shorter than those of the dorsal. Pectoral 2? the length of head. Caudal truncate or subtruncate. 
Least depth of caudal peduncle 2 the-length of head. Coloration very variable, the males sometimes 
spotted or barred, sometimes uniformly blackish ; females spotted, the spots sometimes forming cross- 
bars, sometimes a longitudinal lateral band; vertical fins pale or dusky ; caudal, in the males, usually 
spotted and with a blackish posterior edge; females with a dark spot on the posterior part of the 
dorsal. 
Hab. Rio Grande System and southwards to Durango: 
Leon Spring in Texas1!?; Colonia Juarez, Guzman, Santa Maria and Minaca 
in Chihuahua!!; Rio Carmen and Rio Sauz in Chihuahua®; Rio Conchos in 
Chihuahua®®: Rio Chihuahua‘; Parras in Coahuila’; Labor and Durango 
’ 
in Durango !°. 
Here described from specimens measuring up to 60 mm. in total length from the 
Rio Conchos (Woolman), determined as C. eximius and C. elegans by Dr. Jordan, 
the Rio Sauz (Meek), and Labor (Meek). 
3. Cyprinodon variegatus. 
Cyprinodon variegatus, Lacep. Hist. Nat. Poiss. v. p. 486 (1803)*; Ginth. Cat. Fish. vi. p. 305 
(1866) ?; Garman, Mem. Mus. Comp. Zool. xix. 1895, p. 20 >; Jord. & Everm. Bull. U.S. 
Nat. Mus. xlvii. 1896, p. 672°. 
Esox ovinus, Mitchell, Trans. Phil. Soc. N. York, i. 1815, p. 441, t. 4. fig. 7°. 
Lebias rhomboidalis, Val. in Humboldt’s Obs. Zool. ii. p. 100 (1817) °. 
Lebias ellipsoidea, Le Sueur, Journ. Ac. Philad. ii. 1821, p. 5, t. 2. figs. 1-37. 
Cyprinodon gibbosus, Baird & Girard, Proc. Ac. Philad. 1853, p. 390°; Girard, U.S. Mex. Bound. 
Surv., Fish. p. 67, t. 87. figs. 1-7’. 
Trifarcias riverandi, Poey, Mem. ii. p. 306 (1861) an 
Depth of body 2 to 23 in the length, length of head 33. Snout a little shorter than eye, the diameter of 
which is 3-33 in the length of head ; interorbital width 23 to 2? in the length of head. 26 or 27 scales 
in a longitudinal series. Dorsal 10-11 ; longest rays equal to the base of the fin and nearly as long as 
the head ( ¢) or about § the length of head (Q). Anal 10-11; longest rays considerably shorter than 
those of the dorsal. Pectoral nearly as long as the head. Caudal truncate. Least depth of caudal 
peduncle 2 the length of head. Body with more or less distinct dark vertical bars ; caudal fin, in males, 
with a dark posterior edge ; females with a dark spot on the posterior part of the dorsal. 
Hab. Cape Cod to the Rio Grande and Cuba, entering the sea: 
New York®; Carolina!; Florida’; Louisiana 6; Indianola in Texas 89; 
Cuba ?°, 
