chap, xx.] FISHES. 445 



(6 genera), South America; Citharinina (1 genus), Tropical Africa ; 

 Anostomatina (3 genera), South America ; Tetragonopterina (16 

 genera), South America and Tropical Africa; Hydrocyonina 

 (9 genera), Tropical America and Tropical Africa ; Distichodon- 

 tina (1 genus), Tropical Africa ; Icthyborina (1 genus), Africa ; 

 Crenuchina (1 genus), Equatorial America; Serrasalmonina (4 

 genera), South America. 



The following is the distribution of the genera : — 

 Macrodon (4 sp.), Tropical America ; Erythrinus (5 sp.), 

 Brazil and Guiana ; Lebiasina (1 sp.), West Equatorial Ame- 

 rica ; Pyrrhulina (1 sp.), Guiana ; Corynoporna (4 sp.), Trinidad 

 only ; Curimatus (15 sp.), Tropical South America and Trini- 

 dad ; Prochilodus (12 sp.), South America to the La Plata ; 

 Cmntropus (2 sp.), East Equatorial America ; Hemiodus (8 sp.), 

 Equatorial America east of Andes ; Saccodon (1 sp.), Ecuador ; 

 Parodon (1 sp.), Brazil ; Citharinus (2 sp.), Tropical Africa ; 

 Anostomus (8 sp.), Tropical America ; Rhytiodus (2 sp.), Equa- 

 torial America; Leporinus (14 sp.), South America East of 

 Andes; Piabucina (2 sp.), Guiana; Alestes (4 sp.), Tropical 

 Africa : Brachyalestes (5 sp.), Tropical Africa ; Tetragonoptents 

 (32 sp.), Tropical America ; Scissor (1 sp.), South America ; Pseu- 

 dochalceus (1 sp.), West Ecuador ; Chirodon (2 sp.), Chili ; Chal- 

 ceus (1 sp.), Guiana; Brycon (10 sp.), South America east of 

 Andes ; Chalcinopsis (4 sp.), Central America and Ecuador ; 

 Bryconops (2 sp.), Tropical America ; Creagrutus (1 sp.), Western 

 Ecuador ; Chalcinus (4 sp.), Tropical South America ; Gastro- 

 pclecus (8 sp.), Tropical South America ; Piabuca (2 sp.), Equa- 

 torial America; Agoniates (1 sp.), Guiana; Anacyrtus (7 sp.). 

 Central and South America ; Hystricodon (1 sp.), Equatorial 

 America ; Salminus (3 sp.), South America ; Hydrocyon (3 sp.), 

 Tropical Africa ; Sarcodaces (1 sp.), West Africa ; Oligosarcus 

 (1 sp.), Brazil ; JCiphoramphus (7 sp.), South America east of 

 Andes ; Xiphostoma (5 sp.), Equatorial America east of Andes ; 

 Cynodon (3 sp.), Tropical America East of Andes ; Disticlwdus 

 (7 sp.), Tropical Africa ; Icthyborus (3 sp.), Nile ; Crenuchus (1 

 sp.), Guiana; Mylesinus (1 sp.), Equatorial America ; Serrasalmo 

 (13 sp.), Tropical South America east of Andes ; Myletes (18 sp.), 



