24: 



HYDROCYOX, Cuvjer. 

 In Hydrocyon of Cuvier, * several modifications 

 of form seem to occur, no less than five being no- 

 ticed and referred to particular types of fishes ; — 

 1. Salmo falcatus^ Bloch. ; 2. C har acinus Amazoni- 

 cus, Spix, XXXV. ; 3. Cynodon vulpinus^ Spix, xxvi. ; 

 4. Xiphostoma J 5. Characinus dentex^ Geof. The 

 genus, therefore, v^ould scarcely appear to be well 

 defined, and we place our present drawing under it 

 as approaching nearest in form to those species 

 figured by D'Orbigny as H. hepsetus^ humeralis^ 

 &c. 



SMALL-SCALED HYDROCYOX. 



Hydrocyon microlepis. 



PLATE XXIV. 



Macusi, Ghawarrikang. Schomb. Drawinr/s^ No. 16. 



" This fish is found in the Rios Negro and Branco, 

 as well as in the Essequibo. In the upper part of 

 the latter river they are very plentiful ; and when 

 the river is low, several hundreds are taken in a 

 night by placing a canoe across a small creek which 

 * Regne Animal, vol. ii. p. 312. 



