180 CALIFORNIA ACADEMY OF SCIENCES. 



125. Pimelodus grosskopfii. 



Pimelodus yrosskopfii Steindachner, SB. Ak. Wien, Ixxx, 1879,. 

 Ichthyol. Beitriige, viii, 68 (Cauca); Steindachner, Fisch-Fauna 

 des Cauca & Fliisse bei Guayaquil, 5, pi. i, fig. 1-la, 1879 

 (Cauca). 



Habitat: Magdalen river and ^tributaries. 



We have not seen any specimens of this species; it 

 seems to agree very closely with some forms of clarias. 



126. Pimelodus labrosus. 



Pimelodus labrosus (Kroyer MS.) -Liitken, Vidensk. Meded. 1874, 



200 (La Plata). 

 Habitat: La Plata. 



This may be a valid species. Dr. Liitken even places 

 it in a group distinct from maculatus, but as he has not 

 made the differences evident to one who has not both 

 species or varieties we have placed it here. 



Only the types are known. 



127. Pimelodus valenciennis, 



Pimelodus valenciennis\( Kroyer MS.) Lutken, Vidensk, Meded. 1874, 



200 (La Plata). 

 ? Pimelodus nigribarbis Boulenger, Ann. &Mag. Nat. Hist. Oct. 1889, 



266 (Camapuam River). 

 Habitat: Kio Plata. 



This species is distinguished chiefly by the length of 

 its anal and adipose fins. It is known only from the 

 types. 



128. Pimelodus westermanni. 



Pimelodus westermanni (Keinhardt MS.) Ltitken, Dan. Viden. Selsk. 



1874, 32 (Bio das Valhas); Dan. Selsk. Skr. 167, plates ii and 



iii, fig. 4, 1875 (Rio das Velhas). 

 Habitat: Kio das Velhas. 



This species is distinguished chiefly by the absence of 

 an intermaxillary band of teeth. Only the types are- 

 known. 



129. Pimelodus altipinnis, 



Pimelodus altivinnis Steindachner, SB. Ak. Wien, lix, 1864, Ichthyol. 

 Notiz. i, 14, plate ii, figs. 3 and 4 (Demarara); id. Ixxiv, 1876, 

 Ichthyol. Beitr. iv, 56, plate xi (Para; Santarem; Cameta); 

 Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. i, 135, 1888 (Para). 



Habitat: Amazon and northward. 



