13. CRENICICHLA. 307 



thoracic region with round spots ; margin of the dorsal black. — Rio 

 Negro. 



Var. S. adspersa. Greenish-brown ; an ocellus on the Dase of the 

 caudal ; the whole head and thoracic region with black dots. — Rio 

 Guapore. 



Var. e. lugubris. Uniform, with an obsolete dark blotch on the 

 scapulary region, and with a deep-black spot in the middle of the base 

 of the caudal. — Rio Negro. 



Var. ^. funehris. Uniform, with a dark blotch on the scapulary 

 region ; caudal spot indistinct. 



g. Fine specimen. River Capin. Purchased of Mr. Stevens. 



^,^. Adult and half-grown. Guiana. Presented by Sir R. Schomburgk. 



Var. r). Johanna. Uniform brown or black. 



h. Adult. From the Collection of the Zoological Society. 

 I. Half-grown. River Cupai. Purchased of Mr. Stevens. 



In a specimen in the Berlin Anatomical Museum, the intestines 

 make only one complete circumvolution and several curvatures ; the 

 right ovarium of that specimen is twice the size of the left, ex- 

 tending, however, only to the iciiddle of the length of the abdomen. 

 Air-bladder simple, large, with thick membranes. 



3. Crenicichla acutirostris. 

 D. ?^. A. 1 L. lat. 125. 



14 11 



Thirteen series of scales between the origin of the dorsal fin and 

 the lateral line. Snout produced, its length being once and a half 

 the Avidth of the interorbital space. The height of the body is two- 

 fifteenths of the total length, the length of the head one -fourth. 



River Cupai. 



a. Nine inches long. B<iver Cupai (800 miles from the sea). Pur- 

 chased of Mr. Stevens. 



This species resembles Cr. Johanna, but its snout is comparatively 

 much more produced, its length being cont^ined twice and three- 

 fifths in that of the head. The cleft of the mouth is somewhat less 

 broad than long, and the inner margins of the mandibles are in im- 

 mediate contact with each other. The specimen is brown, with a 

 series of ten sqiiare lighter spots on the back, along the base of the 

 dorsal fin. 



4. Crenicichla macrophthalma. 

 Hechel, Brasil. Fltiss-Fische, p. 427. 



I>-iSl- ^-rs- L. lat. 68-70. 

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

 The height of the body is contained five times ana a fourth in the 



x2 



