

NATURAL SCIENCES OF PHILADELPHIA. 251 



body, nearly four inches in lengtli (with caudal) ; depth, 3.5 times 

 in the same. Orbit, twice preorbital bone, equal muzzle, one- 

 fourth wider than interorbital space, one-third head. 



Total length .063 m.; to basis anal .0335; do. ventral .010; 

 do. dorsal (axial) .015 m. Color brown; a black band^ from 

 orbit to basis caudal. A black spot at base, and one at tip of 

 caudal. Basis of dorsal and anal brown, rest j'^ellow. A black 

 baud from orbit to angle of interoperculum. Cheeks and opercu- 

 lum with blue spots separated by yellow lines. River Ambyiacu. 



GEOPHAGUS BADIIPINNIS, Cope, sp. nov. 



Form short oval; body deep; front steeply descending, concave 

 between the orbits ; the muzzle projecting. Depth one-half length 

 without caudal fin ; head 2.4 times in the same. Orbit 3.5 times 

 in length of head ; 1.3 times into interorbital space, which equals 

 length of muzzle with under jaw. Preorbital bone .'75 the dia- 

 meter of the orbit. End of maxillary bone falling opposite the 

 pupil. Fin rays D. xiii-12, A. iii-11. Scales 3-2*1-8-10; six 

 series on the cheek; operculum scaled. Twelfth dorsal ray equal 

 length of muzzle plus half of orbit ; the rays gradually diminish- 

 ing in length to the second. Caudal fin broadly scaly at base ; 

 no scales at base of second dorsal. Pectoral fin long, extending 

 to opposite last soft dorsal ray; ventrals to third soft anal. 



Color golden, blue bands on the prefrontal bone, and longitu- 

 dinal shades on the scales. Dorsal fin dusky spotted, anal with 

 numerous baj^-yellow spots in vertical rows. Total length .15 m.; 

 to origin dorsal (vertical line) .043; do. to ventral .051; do. anal 

 .084. 



This species, having the coloration of G.jurupari^ has the orbit 

 nearly as median as in G. tseniatus. I do not see the necessity 

 of subdividing Heckel's genus Geophagus into three (Geophagus, 

 Satanoperca, a.nd ilf6'soj9s),as has been proposed by Giinther (Catal. 

 Brit. Mus.). 



GEOPHAGUS JURUPARI, HeckeL 

 8atanoperca jurupari, Giiuth. Cat. B. M. v. 313. 



D. XV. 10, A. iii. 1. Scales 3-31-9; suborbitals G (1) rows. Pre- 

 orbital bone 1.66 times orbit. 



1872.] 



