Henn: South American Pceciliid Fishes. 131 



Broadly depressed anteriorly, compressed posteriorly. Profile 

 slightly arched. Distance from tip of snout to origin of dorsal in 

 females about equal to the distance from last ray of anal to tip of 

 caudal. Origin of dorsal slightly posterior to vertical from the origin 

 of the anal. Ventrals small, barely reaching the vent, caudal rounded. 



A series of oblong vertical spots or bars on the sides of the fish. 

 These vary in number from six to twelve, their number is usually 

 about nine. Males have a prominent V-shaped mark immediately 

 ventral to the dorsal, which is produced into a line of pigment on the 

 keel of the caudal peduncle. 



Genus Pcecilia Schneider. 



Pcecilia Bloch, Syst. Ichth.; 1801, p. 451; Garman, Mem. Mus. Comp. Zool., 

 Vol. XIX, 1895, p. 52; Regan, Proc. Zool. Soc. London, 1913, p. 1005. 



Type, Pcecilia vivipara Bloch and Schneider. 



As now restricted by Regan, this genus comprises a few species 

 limited to the northeastern portion of South America. 



The anal fin of the male is shorter than the head and very similar in 

 structure to that of Lehistes and MoUienisia, from both of which it 

 differs in the absence of the modified terminal segment of the third 

 prolonged ray. 



Photographs of all of the species, except P. branneri, which has 

 never been figured, are given by Eigenmann in Memoirs Carnegie 

 Museum, Vol. V, pi. LXIV-LXVI. 



25. Pcecilia vivipara Bloch & Schneider. 



Pcecilia vivipara Block & ScHNEmER, Syst., Ichth., 1801, p. 452, pi. 86, fig. 2; 



Garman, Mem. Mus. Comp. Zool., XIX, (i), 1895, p. 53; Eigenmann, Repts. 



Princeton Univ. Exp. Patagonia, III, 1910, p. 460; Eigenmann, Mem. Carnegie 



Museum, V, 1912, p. 456, pi. LXIV, fig. 3, male, fig. 4, female (Georgetown, Brit. 



Guiana); Regan, Proc. Zool. Soc. London, 1913, p. 1005, fig. 173 C. 

 ? Pcecilia amazonica Garman, Mem. Mus. Comp. Zool., XIX, (i), 1895, p. 64, pi. 



IV, fig. 9, teeth (Santa Cruz, Para). 



The following specimens were all collected by Haseman. 



4646, C. M., seventeen, three males, twelve females, two young. 13-48 

 mm. Alagoinhas, Rio Catu, Bahia. 



4647, C. M., eleven, 9-18 mm. Maceio, Rio San Francisco. 



4648, C. M., fifteen, two males, eight females, five young. 14-37 

 mm. Penedo, Alegoas, Brazil. 



4649, C. M., ten, 15-41 mm. Barra de Penedo, Rio San Francisco. 



