COLLECTION OF FISHES FROM BUENOS AIRES 45 1 



Color of type : Sides, ventral surface and head profusely 

 spotted, the spots largest on the belly, minute on the head ; 

 lightish streaks along the lateral keels ; dorsal dusky with one 

 or two rows of spots between every two rays ; caudal unspotted, 

 the lower part dusky ; anal dark, unspotted ; ventrals and pec- 

 torals dusky, the former with large spots, the basal two thirds 

 of the latter with very numerous minute spots similar to those 

 of head. 



Color of cotype : Ventral surface plain ; sides with obscure 

 large spots, the light streaks along the keels much more evi- 

 dent ; head profusely covered with spots much larger than those 

 in the type ; dorsal with a series of large spots on the posterior 

 half of each interradial membrane ; caudal sooty, anal obscurely 

 spotted ; entire upper surfaces of ventrals and pectorals spotted, 

 the spots of the pectoral more numerous and smaller, but not as 

 small as those of the head. 



Apparently related to Plecostomus carinatus vaillanti and 

 tietensis. 



Type in Mus. Princeton Univ., a specimen 410 mm. long, 

 from Buenos Aires; coll. Prof. W. B. Scott. Cotype, no. 

 11351, Mus. Ind. Univ., a specimen 214 mm. long, from same 

 place. 

 Loricaria vetula Cuvier & Valenciennes. (Plate XXII.) 



One specimen. 

 Loricaria anus Cuvier & Valenciennes. 



Six specimens. 



These specimens have the lateral keels separate to the last 3 

 or 4 scutes ; the dorsal without spots but with the second half 

 of the membrane dark. 



CHARACID^. 



Curimatus platanus Giinther. 



One specimen. 

 Curimatus gilberti Quoy & Gaimard. 



Two specimens. 

 Prochilodus lineatus (Valenciennes). 



Six specimens, the largest 430 mm. 



