PLATE 7. 



Fig. 1. Moenkhausia barbouri Eigenmann. 



20108 M. C. Z. 65 mm. Type. Villa Bella, Brazil. 



Fig. 2. Moenkhausia megalops Eigenmann. 



20723 M. C. Z. 56 mm. (caudal broken). Gurupa, Brazil. 



Fig. 3. Moenkhausia ovalis (Giinther). From Type in British Museum. Xeberos, Brazil. 



Fig. 4. Moenkhausis oligolepis (Giinther). 



118351. U. M. 58 mm. Holmia, British Guiana. 



