434 



PROCEEDINGS OF THE ACADEMY OF 



[Oct., 



This example agrees largely with Liitken's excellent figure. 

 Astyanax orientalis (Cope). Fig. 35. 



Head 3i to 3f ; depth 2^ to 2f ; D. iii, 9; A. iv, 27 to 29; eye 2| to 2f 

 in head measured from tip of upper jaw; interorbital space 2f. Body 

 well compressed. Snout broad, with convex surface. Teeth as 

 usual in the genus. Maxillary toothless. Tongue thick, flesh}- and 

 little free. Interorbital space broad and convex. Gill-opening ex- 

 tends nearly opposite front margin of orbit. Rakers 9 -1- 14, lanceo- 



Fig. 35. — Astyanax orientalis (Cope). 



late, and much shorter than filaments, which are y of orbit. A few 

 striae on each scale. Tubes in lateral line simple. Vent close in 

 front of anal. Color in alcohol brownish, peritoneum showing through 

 paler. Fins all pale brownish. Lower side of head silver}-. An 

 elongate blackish-brown humeral blotch and a similar shade at base 

 of caudal continued out on median rays. A rather indistinct silvery 

 band from shoulder to base of caudal. Length of largest, with dam- 

 aged caudal, 2^ inches. Paramaribo, Dutch Guiana. Dr. Charles 

 Hering. 



