chap, xx.] FISHES. 443 



(1 sp.), northern and southern tributaries of Amazon ; Piratinga 

 (3 sp.), Amazon Valley; Seiades (2 sp.), Amazon; Pimelodus 

 (42 sp.), Mexico to La Plata, single aberrant species from \Y 

 Africa, Java and the Sandwich Islands ; Pirinampus (1 sp.), 

 Brazil; Conorhynchus (1 sp.), Brazil; Xotoglanis (1 sp.), Madeira, 

 Amazon Valley ; Callophysus (3 sp.), Tropical South America ; 

 Auchmaspis (1 sp.), Tropical Africa ; Arius (68 sp.), all Tropical 

 regions; Galeichthys (1 sp.), Cape of Good Hope ; Gcnidens (1 

 sp.), Brazil; Hemipimdodus (3 sp.), India, Sumatra, and Borneo; 

 Ketingus (1 sp.), Sunda Islands ; JZlurichthys (4 sp.), Eastern 

 United States to Guiana ; Paradiplomystax (1 sp.), Brazil ; Di- 

 plomystax (1 sp.), Chili ; Ostcogeniosus (3 sp.), India to Java ; 

 Batraclioceplialus (1 sp.), Java and Sumatra ; Bagarius (1 sp.), 

 India to Java; Eudyptosternum (1 sp.), India; Glyptosternum 

 (8 sp.), Himalayas, Central India, Java, and Sumatra ; Hara (3 

 sp.), Continental India ; A mblyccps (3 sp.), Continental India, 



Sub-family 5 (Silurid.e Stenobraxchle) is confined to South 

 America and Africa, with one genus and species in the Ganges. 

 It consists of three groups : Doradina (12 genera), South America 

 and Africa; Bhinoglanina (3 genera), Central Africa and the 

 Ganges ; Malapterurina (1 genus), Tropical Africa. The distri- 

 bution of the genera is as follows : — 



Ageniosus (4 sp.), Surinam to La Plata; Tetranematichthys (1 

 sp.), Central Brazil, Rio Guapore ; Euanemus (1 sp.), Surinam 

 and Brazil ; Auch: nipt cms (9 sp.), Equatorial America ; Centro- 

 mochlus (2 sp.), Equatorial America ; Trachelyopterus 2 sp.), 

 Equatorial America ; Cetopsis (3 sp.), Brazil ; Asterophysus (1 

 sp.), Pdo Xegro, Xorth Brazil; Doras (13 sp.), Tropical South 

 America east of Andes ; Oxydoras (7 sp.), Amazon Valley and 

 Guiana; Rhinodoras (3 sp.), Tropical South America east of 

 Andes ; Synodontis (12 sp.), Tropical Africa ; Rhinoglanis (1 sp.), 

 Upper Xile; Mochocus (1 sp.), Xile ; Callomystax (1 sp. . Nile; 

 Malapterurus (3 sp.), Tropical Africa. 



Sub- family 6 (SiluhiDjB Proteropodes) inhabits Tropical 

 America and Xorthern India as far as Tenasserim. It consists 

 of two groups : the Hypostomatina (17 genera, with the same 

 distribution as the sub-family, and the Aspredinina (3 genera). 



