LIST OF FIGURES IN TEXT. 

 Memoir No. 1. 



FIGTJEE ^A«^ 



1. Types of teeth and their variations in the Cheirodontinw 9 



2. Phylogenic Arrangement of the Genera of the Cheirodontiim 13 



3. Arrangement of teeth in Grundulus bogotensis (Humboldt) 18 



4. Arrangement of teeth in Spintherobulus papilliferus Eigenmann 20 



6. Outhne of head and teeth in Probolodus heterostonms Eigenmann 22 



6. Outhne of head and teeth in Aphyocharax dentatus Eigenmann 26 



7. Outline of head and teeth in Aphyocharax anisitsi Eigenmann 30 



8. Aphyocharax avary Fowler. 31 



9. Aphyocharax rathbuni Eigenmann. Greatly enlarged 32 



10. Dentition of Aphyocharax paraguayensis Eigenmann 33 



11. Outline of head and dentition of Prionobrama filigera Eigenmann 40 



12. Outline of head and dentition of Parecbasis cyclolepis Eigenmann 45 



13. Dentition of Macropsobrycon Uruguayans Eigenmann 49 



14. Outline of head and dentition of Megalamphodus melanopltrus Eigenmann . . 51 



15. Dentition of Megalamphodus heteresthes (Ulrey) 54 



16. Outline of head and dentition of Megalamphodus vdcrupkrus Eigenmann. . 55 



17. Dentition of Oligobrycon microstomus Eigenmann 57 



18. Outline of head and dentition of Aphyocheirodon hemigrammus Eigenmann . 59 



19. Outline of head and dentition of Compsura heterura Eigenmann 61 



20. Dentition of Microbrycon ribeiroi Eigenmann 63 



21. Dentition of Cheirodon annce McAtee "8 



22. Interhsemal spines of Cheirodon annoe, cf 69 



23. Dentition and enlarged view of interhsemal spines of Cheirodon annce 69 



24. Interhsemals in Cheirodon interruptus Jenyns 72 



25. Dentition of Cheirodon monodon Cope ' ^ 



26. Cheirodon notomelas Eigenmann '5 



7Q 



27. Cheirodon piaba Liitken ' ^ 



28. Cheirodon piaba Liitken °^ 



29. Cheirodon microdon Eigenmann t 81 



CO 



30. Cheirodon stenodon Eigenmann 



31. Holesthes pequira (Steindachner) 



32. Holesthes heterodon Eigenmann ^^ 



33. Odontostilbe hastata Eigenmann ^^ 



vii 



