SOUTH AMERICAN NEMATOGNATHI. 165 



Localities: Cuiupira; Tabatiuga; Cudajas; Gurupa; Teflfe; Lake 

 Hyanuary; Villa Bella; Para; Ueruuduba; Sautarem; Porto do 

 Moz; Peruambiico; Obidos. 



6. Hoplosternum melampterus (Cope.) 



IV. Decapogon gen. nov. 



Lower lip with a series of six barbels; veutral surface en- 

 tirely mailed. 



7. Decapogon adspersUS Steindaclmer. 



Localities: Cudajas; Tabatiugi; Porto do Moz. 



V. DiANEMA Cope. 



8. Dianema longibarbis Cope. 



VI. Brochis Cope, 

 Chcenothorax Cope. 



§ ? noo. 



9. Brochis taiosh (Casteluan.) 



§ Chcenothorax. 



10. Brochis bicarinatus (Cope.) 



11. Brochis semiscutatus (Cope.) 



§ Brochis. 



12. Brochis dipterus Cope. 



13. Brochis coeruleus Cope. 



VII. CoRYDORAS Lac^pede. 



Hoplisoma Swainson; Hoplosyma Gill; Oasterodermus 

 Cope. 



14. Corydoras eques Steindaclmer. 



Locality: Cudajas. 



15 Corydoras splendens (Casteluau.) 



16. Corydoras elegans Steiudacliner. 



Locality: Cudaj is. 



17. Corydoras nattereri Steindaclmer 



Localities: Rio Doce; Rio Parahjb.x. 



