BY THOMAS G. SLOAN E. 349 



invader) only eight genera against thirty genera in the second 

 division, i.e., the southern land areas of the globe; this seems to 

 indicate that the Cicindelidae are not of northern origin. 



From the Australian region, as here intended, the Oriental tribe 

 Collyrini might well be excluded; it is represented by Gollyris 

 celebensis Chaud., in the Aru Islands, and Trieondyla aptera Oliv., 

 in New Guinea.* I would go further and also exclude, as- 

 Oriental, the Theratini, represented by four species of Therates^ 

 This would reduce the Cicindelidse of the Australian region to 

 two tribes, nine genera, and ninety species, but would still leave 

 the Australian Cicindelid fauna, by the variety of its component 

 parts, of greater importance than the Cicindelid faunas of the 

 Oriental, Palsearctic, or Nearctic region, though not equal to' 

 those of the Ethiopian or Neotropical region. 



Turning now to the Australian Continent, we find represented 

 there two tribes and five genera. The species of Australia are, 

 so far as is known at present, endemic, except the widely-spread 

 0. semicincta Brulle, and C. discreta Schaum, var. froggatti Macl. 



Tribe Megacephalini. — The distribution of the Megacephalini 

 shows : — South America, five genera and sixty -four species ; 

 North America, the genus Megacephala with four species; 

 Europe and Asia, Megacephala euphratica Latr., only; Africa, 

 the genus Megacephala with ten species; Australia, the genus 

 Megacephala with seventeen species. The great development of 

 this tribe in the Neotropical region, and its almost complete 

 absence from the Nearctic, Palsearctic, and Oriental regions,, 

 together with the strong representation of the genus Megacephala 

 in the three great southern land-areas of the globe, seem the 

 important points in connection with the distribution of the 

 Megacephalini; and here we see a striking instance of that 

 obscure zoological problem, namely, the relationships which 

 exist in some groups between the faunas of South America, 

 Africa and Australia. My data are not sufficient to enable me to- 



* Postscript. — Trieondyla aptera has recently been found at Coen, North- 

 Queensland, by Mr. Henry Hacker. — T.G.S., 6-viii.-06. 



