Eigenmann: Some Species of Rhamdia. 395 



even in the smallest; in clusters in the largest; depth of intermaxillary 

 band of teeth nine times in its width. A well-marked hyaline band 

 on the dorsal. Color plain, shading downward. 



4. Rhamdia hilarii (Cuvier & Valenciennes). 



72770-7, C. M., 61-187 mm., Rio Das Velhas, May 10, 13, igo8. 

 Haseman. 



Dorsal spines, I, 7 in seven* and I, 8 in three specimens. Maxil- 

 lary barbel extending to near the middle of the adipose in the smallest, 

 to the second sixth of the adipose in the largest, not quite to end of 

 dorsal in some of the others; pores of the top of the head conspicuous, 

 aggregated; depth of premaxillary band of teeth about seven to eight 

 times in its width; eye 5.5-6 times in tlie head, interorbital 4-4.5. 

 A. 11-12. 



7282a-&, C. M., 140-191 mm., Piracicaba, Sept. 7, 1908. Haseman. 



In the depth of the premaxillary band of teeth these two specimens 

 approach R. sapo. D. I, 7; I, 8; maxillary barbel not quite to end of 

 base of dorsal; interorbital 3.4-3.5; premaxillary band of teeth 4}^ 

 and 6 (in smaller) times as wide as deep. Eye 6-6.5 iri the head; 

 pectoral spine 2}/g. 



From other localities in the basin of the upper Parana, Rios Tiete 

 and Grande and their tributaries there are the following; 



72760-6, C. M., 105-137 mm., Salto Avanhandava, Rio Tiete, Sept. 



14, 1908. Haseman. 

 72890-e, C. M., 72-125 mm., Sapina, Rio Tiete, Dec. 7, 1908. 



Haseman. 

 72870, C. M., 246 mm., Jaguara, Rio Grande into Paran4. Haseman. 

 731 10, C. M., 61 mm., Mogy Guassu, into Rio Grande into Parana. 



Aug. 25', 1908. Haseman. 

 72750-6, C. M., 79-108 mm., Bebedoura, near Rio Grande, Sept. i, 



1908. Haseman. 



In these specimens from the upper Parana basin, Rio Tiete, Rio 

 Grande, and their tributaries, the dorsal formula is I, 6 in two (from 

 Sapina); I, 7 in four; I, 8 in three. The maxillary barbel may reach 

 to the middle of the adipose, usually it is shorter, sometimes not quite 

 reaching to end of the base of the dorsal. 



