PLATE III. 



A Few of the Numeuous Types of Teeth in the Characins. 

 ("From photographs by the authof ) 



1. Ruphiodon viilpinus Spis. 



2. Astyiuiiix bimaciilattis brevoortii Gill. 



3. Serrasalmo humeraJie Cuv. &. Val. 



4. Ileiiochilne wheatlandi Garmaii. 



5. Acestrorhynchiis falcatus Bloch. 



ti. Iloplerythriniiw unitceniafii& Spi.x. (Head rescmbk-s that of Ainia.) 



7. Lc'porinus conirostris Steiiidachiier. 



B. Prochilodus scrofa Stcindachner. 



9. Aphiocharas dentatus Eigenmaiiii & Kennedy. 



