CHAP, XX.] 
FISHES. 
443 
(1 sp.), northern and southern tributaries of Amazon ; Pimtinga 
(3 sp.) ; Amazon Valley; Sciades (2 sp.), Amazon; Pimelodus 
(42 sp.), Mexico to La Plata, single aberrant species from West 
Africa, Java and the Sandwich Islands ; Pirinampus (1 sp.), 
Brazil; Conorhynehus (1 sp.), Brazil; Notoglanis (1 sp.), Madeira, 
Amazon Valley ; Callophysus (3 sp.), Tropical South America ; 
Auchenaspis (1 sp.), Tropical Africa ; Arius (68 sp.), all Tropical 
regions ; Galeichthys (1 sp.), Cape of Good Hope ; Genidens (1 
sp.), Brazil ; JPemipimelodus (3 sp.), India, Sumatra, and Borneo ; 
Ketingus (1 sp.), Sunda Islands; JElurichthys (4 sp.). Eastern 
United States to Guiana; Paradiplomystax (1 sp.), Brazil ; Di- 
plomystax (1 sp.), Chili ; Osteogeniosus (3 sp.), India to Java ; 
Batrachocephalus (1 sp.), Java and Sumatra; Bagarius (1 sp.), 
India to Java; Euclyp tosternum (1 sp.), India; Glyptost&rnum 
(8 sp.), Himalayas, Central India, Java, and Sumatra ; Hara (3 
sp.), Continental India; Amblyceps (3 sp.). Continental India. 
Sub-family 5 (Silurid^e Stenobranchle) 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, Eio Guapore ; Euanemus (1 sp.), Surinam 
and Brazil ; Auchenipterus (9 sp.). Equatorial America ; Cent-ro- 
mochlus (2 sp.), Equatorial America; TrachelyopUms (2 sp.), 
Equatorial America; Cetopsis (3 sp.), Brazil; Asterophysus (1 
sp.), Pdo Negro, North Brazil; Doras (13 sp.), Tropical South 
America east of Andes ; Oxydoms (7 sp.), Amazon Valley and 
Guiana; Rhinodoras (3 sp.), Tropical South America east of 
Andes ; Synodontis (12 sp.), Tropical Africa ; Rhinoglanis (1 sp.), 
Upper Nile; Mochocus (1 sp.), Nile; Callomystax (1 sp.), Nile; 
Malapterurus (3 sp.), Tropical Africa. 
Sub-family 6 (Silurid^e Proteropodes) inhabits Tropical 
America and Northern 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). 
