Henn: South American Pceciliid Fishes. 126 



4678 C. M., twenty-three, six males, fourteen females, three young. 

 19-56 mm. Raiz da Serra, Rio Mogy into Santos Bay. 



4679 C. M., seven, five males, two young. 20-40 mm. Alto da 

 Serra, Rio Tiete, into Parana. 



4680 C. M., four, one male, two females, one young. 9-48 mm. 

 Cubatao, Rio Cubatao. 



4681 C. M., twenty-one, three males, eighteen females. 22-35 mm- 

 Mogy Guassu, Rio Mogy Guassu into Rio Grande, into Parana. 



4682 C. M., thirteen, three males, ten females, 21-45 mm. Salto de 

 Avanhandava. Rio Tiete. 



4683 C. M., five, all females; 19-37 rnm. Bauru, Rio Tiete. 



4684 C. M., fifteen, five males, eight females, two young. 18-40 mm. 

 Iguap6, Rio Ribeira da Iguape. 



4685 C. M., fifteen, eleven females, four young. 8-43 mm. Morretes 

 on Marumby into Rio Nhundiaquara. 



4686 C. M., seventeen, one male, thirteen females, three young. 

 18-38 mm. Porto Alegre, Rio Grande do Sul. 



4687 C. M., four females, 20-35 rnm. Cachoeira, Rio Jacuhy, Rio 

 Grande do Sul. 



4688 C. M., nineteen, seven males, ten females, two young. 16-38 

 mm. Sapucay, Paraguay. 



4689 C. M., three females. 17-28 mm. Villa Hays, Rio Confusso, 

 into Rio Paraguay. 



Range: Rio de Janeiro to Uruguay and Paraguay. . 



Head 4.1-4.2; depth at origin of anal, in females 4.2-4.5, in males 4: 

 depth of caudal peduncle, 7.2 8.5 in length to base of caudal, 1.7-2 in 

 head; D. 8; A. 10; P. 10; V. 5; 29-30 scales in lateral series; 8 in trans- 

 verse series. Eye equal to interorbital ; 2.8 in head. 



Origin of the dorsal about midway in the total length, slightly 

 posterior or opposite to anal origin. Pectorals large, extending over 

 ventrals; caudal rounded. 



General color in spirits olivaceous, scales margined with darker. 

 Fins usually immaculate, sometimes spotted or tipped with chro- 

 matophores. The most conspicuous marking is a vertical spot of 

 black, slightly posterior to the dorsal, on the seventeenth or eighteenth 

 scale posterior to the pectoral origin; the twelfth or thirteenth scale 

 forward from the caudal, the fourth scale obliquely' from the dorsal. 

 The darkened area usually extends under adjoining scales, forming a 

 spot about half the diameter of the eye. In young specimens, a 



