South African Butterjiles. 343 



coast, the abundance of species most markedly decreasing 

 in the higher districts inland. The richness of the coast- 

 line in comparison with an elevated inland region like 

 Basuto-land is even more striking, on looking to the very 

 limited extent and southern position of British Kaffraria 

 (now forming part of the Cape Colony), where ninety- 

 four species were collected by Mr. D^Urban during a 

 yearns stay (see Tr. Ent. Soc, 3 ser., i. 398) . Taking, 

 however, the catalogue of species inhabiting the Cape 

 Colony (including British Kaffraria) , it will be seen that 

 Basuto-land, considering its comparatively small size, is 

 not so very much the poorer, the Colony at present 

 mustering only about one hundred and fifty-two species. 

 Among the sixty-two Basuto species, there are fourteen 

 not known to occur in the Cape Colony, five of which 

 (together with nine others) are not recorded from Natal ; 

 but little value can be attached to these figures, owing to 

 our very scanty information respecting the entomology 

 of the northern border of the former Colouy, and the 

 western boi'der of the latter," in which tracts of country 

 it is most probable that the species wanting in the 

 existing lists do mostly , if not all, occur. 



The following table shows the extent to which the 

 various groups of South African Bhopaloccra are re- 

 presented in Basuto-land, in comparison with their 

 known numbers south of the tropic. 



268 62 



* A species of Tjihytliein(i;. Mr. W. Moraut lias sont me a figure of a 

 Lihythea, captured by him on the coast of Natal, which appears tu be a 

 uew species, allied to L. Leiiita, Moore. 



B B 2 



