48 Description of a New Generic Form of Gohinoe, <&c. 



The eye lias a diameter equalling a quarter of the lengtli of 

 the head, and is almost entirely situated in the anterior half of 

 the head ; the inter-orbital space is only three-tenths of a dia- 

 meter. 



The first dorsal commences at the second-sixth of the total 

 length. 



The caudal constitutes nearly a fifth of the whole length, and 

 when expanded its margin is regularly rounded. 



The ])ectorals are nearly equal to a sixth of the total length ; 

 the margin is rounded and the base slightly emarginated. The 

 rays are well connected by the membrane. 



The radial formula is as follows : — 



D. YI— 1-101 A. 1.10^ G. 4, Y, 6, 4. P. 17, V. 1, 5 + 5.1. 



The genital papilla is transversely compressed and subqua- 

 drate, and is received in a depression, so that its surface is 

 nearly on a line with the abdomen. 



The color is reddish-brown or dark bay, with a posteriorly 

 straight hoary dot in the centre of each scale ; on the back and 

 sides above, the head is plumbeous, with two livid blue bands 

 extending from the eye to the upper jaw. The caudal is 

 crossed by about seven bars, which are obsolete in the mem- 

 brane. 



This is a species which is very easily distinguished by a cer- 

 tain neatness and compactness of form, and by its almost uni- 

 form color ; the spots are not distinct as in many of the species 

 which are inhabitants of the Eastern seas, but are simply mani- 

 fested in obscure parallel lines. The caudal fin is alone barred: 

 the others are almost uniform in their color. 



A single specimen was obtained some years ago by Mr. A, 

 Edwards in the Amazon river, and was presented to Mr. 

 Charles A. Wheatley, who has placed it in the Museum of 

 the E^ew YoA Lyceum. It was given with the Pimeletropis 

 lateralis, Gill., but it is not stated whether it was taken in com- 

 pany with it or otherwise ; its aspect appears to indicate that it 

 is a fresh-water fish. 



