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 ; Corynopoma (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 ; Cifharimis (2 sp.), Tropical Africa ; 

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

 torial America; Lepoi^inus (14 sp.). South America East of 

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

 Africa : Brachyalestes (5 sp.). Tropical Africa ; Tdragono-pte.rus 

 (32 sp.), Tropical America ; >S'cmor (1 sp.). South America ; Pseu- 

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

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

 Andes ; Ghaldnopsis (4 sp.). Central America and Ecuador ; 

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

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

 pelecus (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 ; Sahninus (3 sp.), South America ; Hydrocyon (3 sp.). 

 Tropical Africa ; Sarcodaccs (1 sp.). West Africa ; Oligosarcus 

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

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

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

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

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

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



