132 Annals of the Carnegie Museum. 



4650, C. M., twenty-eight, three males, twenty-four females, one young. 

 17-70 mm. Cachoeira, Rio Paraguassu. 



4651, C. M., five, one male, three females, one young. 11-42 mm. 

 Campos, Rio Parahyba. 



4652, C. M., forty-eight, three males, forty-five females. 25-51 mm. 

 Munez Freire, Rio Itapemerin. 



4653, C. M., five, one male, four females. 29-43 mm. Sao Joao da 

 Barra, Parahyba. 



4654, C. M., eleven. 10-21 mm. Alto da Serra, Sao Paulo. 



4655, C. M., two. 46-61 mm. Iguape, Rio Ribeira da Iguape. 

 From R. Krone. 



4656, C. M., twelve, three males, nine females. 38-50 mm. Iguape. 

 Rio Ribeira da Iguape. 



4657, C. M., three. 12-24 "i"^- Bom Jesus dos Meiras, Rio San 

 Francisco. 



4658, C. M., one. 30 mm. Raiz da Serra, Sao Paulo. 



Some variation occurs in different localities, particularly in the 

 number of dorsal and anal fin-rays. Specimens from localities in the 

 southern part of its range show the shortened dorsal said by Garman 

 to be characteristic of P. aniazonica. However, such complete 

 gradation exists in a single locality, that separation into two species 

 is not possible. P. amazonica, said by Garman to be closely related 

 to P. vivipara, is probably synonymous with it. I have not been able 

 to examine typical specimens. 



26. Pcecilia parae Eigenmann. 



Pcecilia vivipara parcB Eigenmann, Ann. N. Y. Acad. Sci., Vol. VII, 1894, p. 629 



(Para). 

 Pcecilia para Regan, Proc. Zool. Soc. London, 1913, p. 1006, text-fig. 173b (anal). 

 Acanthophacelus hifurctis Eigenmann, Mem. Carnegie Mus., Vol. V, 1912, p. 459, 



pi. LXV, figs. 4, 5, and 6. 



I am not positive that P. bifurcus is a synonym of P. parce, although 

 it is quite certain that bifurcus is a Pcecilia. Typical specimens of 

 P. parce are too much shrunken to permit a final decision. 



27. Pcecilia melanzona (Eigenmann). 



Acanthophacelus melanzonus Eigenmann, Ann. Carnegie Mus., Vol. VI, 1909, p. 51; 

 Mem. Carnegie Mus., Vol. V, 1912, p. 457, pi. LXIV, fig. 5. 



1086, C. M. Type, male, 27 mm. Georgetown, British Guiana. 



