SOUTH AMERICAN NEMATOaNATHI. 159 



Gill-membranes separate to below the anterior margin 

 of the eye. 



Eye li-l|^ in snout, 3j-4 in head, equidistant from 

 snout and posterior margin of opercle; interorbital I3 

 in eye. 



Dorsal spine equidistant from snout and anal, its height 

 Ij in head, the longest rays equal to the head in length. 



Adipose dorsal 3|-4 in the length, its distance from 

 the dorsal fin equals the base of the latter. 



Caudal lobes of equal width, the upper longer, 4 in 

 the length. Anal rounded, its longest rays li-lg in 

 head. 



Ventrals inserted behind the vertical from the last 

 dorsal ray, IJ-I5 in head, their tips about I of their 

 length from the anal. 



Pectoral spine little less than the head in length. 



Color, light brown; a dusky lateral band; tips of the 

 fins dusky. 



Head4i-5; depth 5h-Qh; Br. 7; D. I, 6; A. 12-14. 



117. Pimelodella vittata. 



Pseudorhamdkt vittata (Kroyer) Littkeu, Velhas Flodens Fiske 

 Vidensk. Selsk. Skr. 1874, 34 (Kio das Velhas); id. 1. c. 1875, 

 173, fig. (Kio das Velhas). 



Pimelodella vittata Eigeum. & Eigeum. Proc. Cal. Acad. •2d Ser. 

 i, 133, 1888 (Rio San Francisco; Minas Geraes; Sao Matheos; 

 Bio Jequitiuhonha). 



Habitat: Streams of Miuas Geraes and Bahia emptying in the At- 

 lantic. 



Thirty-five specimens. Rio San Francisco; Minas 

 Geraes; Sao Matheos; Rio Jequitiuhonha. 



Elongate, compressed posteriorly. Head rather broad, 

 its width li in its length, at the rictus 2^, the depth at 

 base of occipital process 1| in its length; profile convex 

 longitudinally, strongly convex transversely. 



Occipital process scarcely extending to the dorsal plate. 



Teeth in bands of equal depth in both jaws, the 



