The Insect Fauna of Van Diemen's Land. 305 



of America and New Holland, but found no where else. 

 Affinities between Soutb America and New Holland are not 

 wanting in the family of tlie Rhjncoplior m (Eusselkafer) ; 

 the Cryptorliynoha, but meagrely represented in other parts 

 of the world, are in both these continents very widely dis- 

 tributed; and the genera Rhinotia and Homalocerus, Aterpus 

 and jEgorliinus, (*) Melanterms and Chalcodermus, present 

 forms analogous to each other. 



Affinities between New Holland and Southern Africa are 

 not, however, entii'ely wanting, although much limited by 

 the following laws: — Those forms which Southern Africa 

 possesses in common with the interior of the continent do not 

 all extend to the other countries of the southern hemisphere, 

 and least of all to New Holland. Of the remaining forms, 

 those of Southern Africa which are at all analogous to any 

 on the western coast of South America, (for this alone 

 presents any affinity to the Cape countries), do not appear 

 in New Holland. To the first category belong the above 

 mentioned Jidodis, the greater part of the Ilelasoma, so 

 numerous both in Southern Africa and in its interior, as well 

 the BracJiycercB and Clencs of the Rhyncopliorce. These form 

 so interesting and characteristic a part of the South African 

 Fauna that their greater affinity latitudinally, as compared 

 with the same longitudinally, is not to be mistaken. In the 

 second category belong the analogies between the Melasomm 

 peculiar to Southern Africa ; as Moluris, with those of the 

 western coast of South America, and the greater resem- 

 blance which the South African Anisonyx and Lepitrix have 

 with the South West American Ch-atoscelis and Lichnia, than 

 with the Glapliynis, Anthypua, and AmpUcoma of the central 

 Fauna (f). 



(*). Lojphotes Schonh. But as this name belongs already to a genus of reptiles, 

 the name I have mentioned may be retained, 

 (t). See Tolume the first of this Archiye, 1st Part, p. 268. 



