NO. 1556. LIST OF CHARACIN FISHES— EIGENM ANN AND OGLE. 31 



Genus THORACOCHAROX Fowler. 



Type. — Gasteropeleetis stellatus Kner. 



In the Proceedings the Academy of National Sciences of Philadel- 

 phia (1906, p. 152) Fowler describes this as a new subgenus with the 

 character ''anterior profile of back convex." It deserves generic rank 

 with the following characters: 



Breast expanded into a large, sharp-edged disk. 



Premaxillary teeth in two separate series, the outer series consisting 

 of two teeth on each side; the pair of middle teeth enlarged, between 

 the front and second series of teeth, projecting over the lower jaw 

 when the mouth is closed; maxillary with several large, divergent 

 canine-like teeth. 



This genus is like a G aster opelecus., with two series of premaxillary 

 teeth and several canine-like teeth on the maxillary. 



Chalcinus angulatus Agassiz. 



No. 1616. Two specimens, Paragua}", Page collection. 



No. 1696. Two specimens, Paraguay, Page collection. 



No. 5558. One specimen, Bolivia, Gibbon collection. 



Nos. 3451:5, 31455, and 34689. Three specimens. Para, Brazil, pre- 

 sented by J. C Brevoort. 



Piabucus melanostomus Holmberg-. 



No. 2101. One specimen, Paraguay, Page collection. 

 Piabucina panamensis Gill. 



No. 16676 (type). One specimen, Atlantic side of Panama, Bransford 

 collection. 



No. 16677 (tj^pe). One specimen, Rio Frijoli, Panama, Bransford 

 collection. 



Ichthyoborus microlepis Gunther. 



No. 52083. One specimen, Atbara River, Egypt, Senli'-Expedition 

 collection, B. Dean, collector. 



Hydrocyon forskalii Cuvier. 



No. 52095. Two specimens, Atbara River, Egypt. Senff-Expedi- 

 tion collection. 



No. 52094. One specimen, Nile-Atbara elunction, Egypt. Senff- 

 Expedition collection. 



Hydrolycus pectoralis Gunther. 



No. 39402. Brazil, collected by H. H. Rusby. 

 No. 5686. Bolivia, Gibbon collection. 



Rhaphiodon vulpinus Spix. 



No. 55667. One specimen, 760 mm., Paraguay, collected by E. 

 Palmer. 



