14. CHJEXOBRANCHUS. 309 



7. Crenicichla orinoceusis. 



Cichla orinocensis, Humboldt, Observ. Zool. ii. p. 167. pi. 45. fig. 3. 

 argus, Valenc, ibid. p. 169. 



Greenish, dotted with black ; a series of four large black ocelli, 

 edged with yellow, along the side. 

 Rio Negro, Orinoco. 



8. Crenicichla reticulata. 

 Batrachops reticulatus, Heck. Brasil. Fluss-Fische, p. 433. 



D. ^. A. |. L. lat. 66. 



The diameter of the eye is one-fifth of the length of the head. 

 The height of the body is one-sixth of the total length, the length of 

 the head two-sevenths. Jaws with a front series of rather strong 

 conical teeth. A black ocellus on the upper part of the root of the 

 caudal. Each scale brown at the base, with yellowish margin. A 

 dark band from the eye to the extremity of the operculum. Dorsal 

 and anal with series of blackish dots. {Heck.) 



Rio Negro. 



Described from a specimen 10 inches long. 



9. Creuicichla semifasciata. 

 Batrachops semifasciatus, Heck. Brasil. Fluss-Fische, p. 436. 

 D.HiiH?. A.i-. L. lat. 56-57. 



10-9 6-7 



The diameter of the eye is a little less than one-fifth of the length 

 of the head. The height of the body is one-fifth of the total length, 

 the length of the head two-sevenths. Jaws with a front series of 

 rather strong conical teeth. A black ocellus on the upper part of 

 the caudal fin, near the base. Each scale yellowish at the base, with 

 brown margin. A dark band from the eye to the extremity of the 

 operculum ; back with dark cross-bands. Vertical fins immaculate. 



Province of Matogrosso. Rio Paraguay. 



A specimen in the Berlin Museum appears to indicate the identity 

 of this and the preceding species. 



14. CHiETOBRANCHUS. 



Chsetobranchus, Heck. Bras. Fluss-Fische, in Ann. Wien. Mus. ii. 1840, 

 p. 401. 

 Body compressed, oblong, covered with scales of moderate size. 

 Dorsal spines numerous, anal spines three ; base of the soft dorsal 

 fin not scaly. Each jaw with a front series of small awl-shaped 

 teeth, behind which is another series of smaller teeth. Cleft of the 

 mouth of moderate width. The outer branchial arch is provided 



