PIMELODUS ZUNGARA. 205 



round, and loose scales; no teeth. Length about 

 seventeen inches. Formula of the fins, 



D. 8/10 P. 14 V. 9 C. 20 Br. 4. 



As elsewhere in these regions, the Siluridae seem 

 to have been frequent ; one large species is described 

 and figured, and four others are slightly indicated, 

 all differing, with perhaps one exception, from those 

 which we have already described. 



PIMELODUS ZUNGARO. Le Zungaro de VAmazone. 

 It was found in the Amazon near to Tomependa, 

 and was said by the natives, who use it as food, to 

 reach a size of six or seven feet in length. It pos- 

 sesses two d >rsal fins; is of an olive colour, marked 

 all over with black spots, and is furnished with six 

 cirrhi, two on the upper, four on the lower jaw. 

 The fin formula is given, 



1st D. 7 ; 2d D. adip. P. 13 V. 10 -A. 10 C. 22 Br. 4. 



A species of Serra-salmo, of considerable size, is 

 described under the name of " Le poisson Caribe de 

 1'Oronoque ;" it approaches nearest to the S. piranha 

 of the previous volume, being pale coloured, the 

 back and dorsal fin greenish, the ventral and anal 

 fins orange. In manners it agrees with S. niger ; 

 the observations of Humboldt confirming those of 

 Mr. Schomburgk in regard to the rapacious habits 

 of several of the genus, which attack, not only 

 animals, but the natives, while bathing and swim- 

 ing, " emportant des morceaux de chair consider- 

 ables* 



