314 CHEOMIDES. 



5. Satanoperca macrolepis. 



D. i^. A. I- L. lat. 27. L. transv. f . 



The fold of the lower lip is interrupted in the middle. Scales on 

 the cheek in six or seven series ; one-half of the operculiun is naked. 

 Head with reticulated lines. 



Demerara. 

 a. Eight inches long : stuffed. Demerara. From the Collection of 



the Zoological Society. 

 h. Half-grown : not good state. British Guiana. Presented hy Sir 



R. Schomburgk. 

 c. Half-grown : stuffed. 



Descrijpiion. — Tho height of the body is nearly two-fifths of the 

 total length (without caudal), the length of the head one-third. The 

 head is as high as long, and the width of the interorbital space two- 

 sevenths of its length. The snout is compressed, elevated, and so 

 much produced that the eye is situated entirely in the posterior half 

 of the length of the head ; praeorbital twice as wide as the eye. Cleft 

 of the mouth of moderate width, the jaws being armed with a very 

 narrow band of extremely small teeth. Eye situated near the upper 

 profile, the space between the orbits being convex. Only the upper 

 portion of the narrow operculum is scaly. 



Dorsal and anal fins entirely naked. Dorsal spines long and strong, 

 the length of the middle and posterior ones being one-half of that of 

 the head ; the soft portion is somewhat more elevated. The third 

 anal spine is stronger, but not longer, than the fourth of the dorsal 

 fin. Caudal rounded, scaly at the base and on a portion of its upper 

 and lower margins. Pectoral and ventral of moderate length. 



The colours have apparently much faded : body and fins of a uni- 

 form yellowish-ohve ; the head is covered with a network of brown- 

 ish lines, each mesh including a light spot half the size of a scale. 

 A small dark spot on the upper part of the root of the pectoral. 



6. Satanoperca proxima. 

 Chromys proxima, Casteln.Atiim. nouv.Amei: Sud,Poiss. p. 14. pi. 7. fig. 1 . 

 B.!5. A.f 



The height of the body is contained twice and a fourth in the total 

 length (without caudal). Pectoral exceedingly long, much longer 

 than the head. Body with a large black lateral blotch. (Cast.) 



Ucayale (Peru). 



7. Satanoperca (?) leucosticta. 

 Geophagus leucostictus, Miill. ^ Trosch. in Schomb. Guiana, iii. p. 625. 



8 6 



Sides of the head with numerous small white dots ; several others 

 on the shoulder ; a single scries of white spots immediately below 

 the base of the dorsal ; caudal and dorsal fins spotted with white. 



Lake Amucu. 



