222 



FISHES. 



Siluridae — 



Clariina [Africa] 



Chacina .... 



Silurina [Africa, Palaearct.] 



Bagrina [Africa] 



Ariina [Africa, Australia, South America] 



Bagariina . . 



Rhinoglanina [Africa] 



Hypostomatina [South America] . 



Cyprinodonticlse — 



Carnivorge [Palaearct., North America, 

 Africa, South America] 



Haplochihis [Africa, South America, 

 North America, Japan] . 



Cyprinidae [Palsearct., N. America, Africa] — 



Cyprinina [Palsearct., N. America, Africa] 



Rasborina [Africa, 1 species] 



Semiplotina 



Danionina [Africa] 



Abramidina [Palsearct., N. Amer., Africa] 



Homalopterina 



Cobitidina [Pal^arct.] 

 Osteoglossidse [Africa, Australia, S. America] 

 Notopteridse [Africa] 

 Symbranchidse — 



Amphipnous 



Monopterus 



Symbranchus [1 species in S. America] 



In analysing this list we find that out of 39 families or 

 groups of freshwater fishes 12 are represented in this region, 

 and that 625 species are known to occur in it; a number 

 equal to two-sevenths of the entire number of freshwater 

 fishes known. This large proportion is principally due to 

 the development of numerous local forms of Siluroids and 



