444 GEOGRAPHICAL ZOOLOGY. [part iv. 



contined to Equatorial America. The distribution of the genera 

 is as follows : — 



Arges (2 sp.), Andes of I'eru and Ecuador ; Stygorjenes (2 sp.), 

 Andes; Brontes (1 sp.), Andes; Astrobtepus (1 sp.), Popayan; 

 Callichthys (11 sp.), Tropical South America east of Andes, and 

 Trinidad ; Plecostomus (15 sp.), Tropical South America east of 

 Andes, and Trinidad ; Liposarcm (3 sp.),' Surinam and Brazil ; 

 Chmtostomus (25 sp.), Tropical America, Trinidad, and Porto 

 Rico; Pterygoplichthys (4 sp.), Brazil ; Ehinelejns (1 sp.), Brazil; 

 Acanthicus (2 sp.), Equatorial America ; Loricaria (17 sp.), 

 Tropical South America east of Andes ; Accsira (4 sp.), Brazil 

 and Guiana ; Sisor (1 sp.), Northern Bengal ; Ercthistes (1 sp.), 

 Assam ; Pscudecheneis (1 sp.), Khasya Hills ; Eo:ostoma (2 sp.), 

 Assam and Tenasserim ; BifMoccjyhalus (2 sp.), Guiana ; Biino- 

 cephalickthys (1 sp.), Ptio Branco, North Brazil ; A»preclo (6 sp.), 

 Guiana. 



Sub-family 7 (SiLURiD^ Opisthoptek^) consists of two 

 groups : Nematogenyina (2 genera), and Trichomycterina (3 

 genera), and is confined to South America. The distribution of 

 the genera is as follows : — 



Hepiaptcrus (2 sp.), South America; Nematogenys (1 sp.). 

 Chili ; Trichoinyctcrvf; (7 sp.), South America to 15,000 feet 

 elevation; EremopMhi>i (1 sp.), Andes of Bogota; Fariodon (1 

 sp.), Amazon. 



Sub-family 8 (SiLURiDJi Bkanchicol^) is confined to Tropi- 

 cal South America. It consists of one group, Stegophilina, and 

 2 genera : Stegophilus (1 sp.), Brazil ; and Vanddlia (2 sp.), 

 Amazon Valley. 



Family GO. CHAEACINIDyE. (47 Genera, 230 Species.) 



" Fresh- water fishes, with scaly bodies and without Ijarbels." 



Distribution. — The Neotropical and Ethiopian regions. 



This extensive family is divided by Dr. Giinther into 10 groups, 

 viz. : Erythrinina (5 genera). South America ; Curumatina 



