154 CALIFORNIA ACADEMY OF SCIENCES. 



teeth not wider than the mandibulary band at the sym- 

 physis. 



Gill-membranes separate to below anterior margin of 

 orbit. Gill-rakers 3+7. 



Distance of dorsal spine from tip of snout equals its 

 distance from the tip of the ventral rays, 3J in the 

 length; the height of the dorsal spine 1-f-lf in the head; 

 highest ray equals the length of the head. Distance of 

 the adipose from the dorsal fin equals the base of the 

 dorsal or sometimes only half as long. Adipose fin 2J-2J 

 in the length. 



Caudal broken in all the specimens. 



Anal higher than long, the longest ray 1} in head, 

 its free margin rounded. Ventrals 1J in head. 



Pectoral spine broad, minute teeth on its outer edge 

 on the basal half, and notches near the tip; the inner 

 margin with strong recurved teeth to near its tip; the 

 height of the spine 1J 1-J- in head, the soft rays a little 

 higher. 



Color dark brown, everywhere with dark punctulations; 

 a dark lateral band; the fins all punctate. 



Head 5; depth 6-7}; Br. 7; D. I, 6; A. 12. 



111. Pimelodella pectinifer , 



Pimelodella pectinifer Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. 



i, 132, 1888 (Campos). 

 Habitat: Rio Parahyba. 



Body robust, compressed posteriorly; head conical, its 

 width 1} in its length, its depth at base of occipital pro- 

 cess equal to its width. 



Upper profile straight, curved in front of the eyes, 

 head convex transversely. Lateral margins of occipital 

 process concave. Distance between the nasal openings 

 1J in eye. 



Maxillary barbels not reaching to adipose fin. Men- 

 tal barbels to base of pectorals, postmental to middle of 



