112 Annals of the Carnegie Museum. 



Professor Anisits has made further collections of the fresh-water 

 fishes of the basin of the Paraguay which were sent to Indiana Univer- 

 sity for identification. By these collections several new species and 

 new genera are added to the South American fauna, the known distri- 

 bution of many species is extended, and what is, perhaps, of most 

 importance, the South American fauna is rid of a number of nominal 

 species, which have been relegated to synonymy. The collections of 

 Professor Anisits are the most important and extensive which have 

 been made in the basin of the Paraguay, and his energy and enthu- 

 siasm, together with his great care in the preservation and labelling of 

 his specimens, promise to make the basin of the Paraguay ichthyolog- 

 ically among the best known regions of the neotropical realm. 



Of particular interest in the present collection are the new species 

 of DysichtbySy the only other species of which came from the Peruvian 

 Amazon, and Homodicetus ; a new genus of Stegophilini, some of the 

 species of which live in the gill-cavities of the larger Siluroids. 



The following localities are represented in the collections : 



i. Rio Paraguay at Porto or Puerto Murtinho, Tuyuyu, and Cor- 

 umba in Matto Grosso. 



2. Rio Otuguis, a western tributary of the Paraguay in Paraguay 

 near the boundary of Bolivia. 



3. Bahia Negra on the west bank of the Paraguay in northern 

 Paraguay. 



4. Puerto Max in the lime region of Paraguay. 



5. Tributary of the Paraguay in the Chaco Paraguayo. 



6. Ipane-Tuya on the Paraguay. 



7. Rio Paraguay and Laguna Pasito at Ascuncion. 



8. Rio Negro, a* tributary of the Paraguay opposite Ascuncion. 



9. Laguna Ipacaray. 



10. Mountain brooks at Sapucay, Central Paraguay. 



11. Villa Rica, and a small brook of Colonia Gonzales. 



The types of new species are in the collections of Indiana Univer- 

 sity. A full set of cotypes are contained in the collections of the 

 Carnegie Museum. 



BUNOCEPHALID^E. 



i. Bunocephalus rugosus Eigenmann and Kennedy. 

 One specimen from Corumba (322 ). 3 



3 Professor Anisits' collector's number. 



