PLATE 100. 



Camera outlines of the heads. 



Fig. 1. Moenkhausia barbouri Eigenmann. 



Fig. 2. Moenkhausia costae (Steindachner). 



Fig. 3. Moenkhausia diehroura (Kner). 



Fig. 4. Moenkhausia melogramma Eigenmann. 



Fig. 5. Moenkhausia oligolepis (Gunther). 



Fig. 6. Moenkhausia grandisquamis (Muller and Troschel). 



Fig. 7. Moenkhausia bondi Fowler. 



Fig. 8. Moenkhausia jamesi Eigenmann. 



Fig. 9, 10. Moenkhausia chrysargyrea (Gunther). 



