rr 
58 THE CYPRINODONTS. 
in short groups in transverse series, as in P. vivipara. Hyes large, more than 
one third of the head, nearly twice the snout, two thirds of forehead. 
Branchiostegal rays five, the fifth frequently split to the base as if formed 
by the union of two. Fins small, excepting caudal. Dorsal origin slightly 
behind the middle of the total length, in the female ; anal origin several rays 
farther forward. On males the anal is still farther forward, between the ven- 
trals, and is modified to form an intromittent organ as long as the head. The 
dorsal also is advanced in this sex and the second ray of each ventral extends 
back at the side of the anal process. Pectorals small in females, reaching a 
vertical from the base of the ventral; longer in males and reaching behind 
a vertical from the origin of the anal. Caudal about as long as the head, 
median rays longer. Scales large. Intestine long. 
Olivaceous, dark on back, lighter on flanks, silvery below. Sides more or 
less iridescent. Cheeks silvery. Scales with darker edges. Faintly darker 
from eye to middle of caudal. Top of head dark, with a small spot of lighter 
in the middle. Along the middle of the flank some have series of scales 
marked in the anterior portion by silvery and on the hinder half of each 
scale by brown. Commonly with a black spot on the middle of the posterior 
rays of the dorsal. Vertical narrow bars of silvery and brownish are more 
common on the males. Dorsal and anal in cases edged with blackish. Cau- 
dal with faint transverse cloudings or bands, or plain. A vertebral line and 
blackish mottling on the edges of the caudal base are sometimes present. 
Hayti; San Domingo. 
Pecilia vittata. 
Plate IV. Fig. 11, teeth; Plate VIII. fig. 10, male. 
Peecilia vittata Guich., 1855, Poiss. Cuba, 224, pl. V, fig. 1; Gth., 1866, Cat., VI, 389; Jor., 1887, P. 
U.S. Mus., IX, 564. 
Limia vittata Poey, 1855, Mem., I, 389, 391, 463, pl. 31, fig. 14-16, —1861, Mem., IT, 383, —1868, 
Repert., IT, 169, 411, —1876, An. Soc. Esp., V, 141. 
Gambusia vittata Blk., 1860, Cypr., 485. 
Limia cubensis Poey, 1855, Mem., I, 888, 391, pl. 31, fig. 12-18, pl. 32, fig. 10-11, —1861, Mem., II, 
383, — 1868, Repert., IT, 411, —1876, An. Soc. Esp., V, 141, — 1880, An. Soc. Esp., IX, 247. 
Gambusia cubensis Blk., 1860, Cypr., 485. 
Pecilia cubensis Gth., 1866, Cat., VI, 340. 
Limia pavonina Poey, 1876, An. Soc. Esp., V, 142. 
Pecilia pavonina Jor., 1887, P. U. S. Mus., IX, 564. 
B. 6; D. 10 (rarely 9); °V. 65° P. 14-155) Glo 27—30% ahr waviern: 
15+ 14. 
Body stout and thick, compressed, deep in the caudal region. Head 
short and thick, nearly as wide as high, about two ninths of the length to the 
