Hutron.—On the Geographical Relations of the N.Z. Fauna. 247 
unsuitableness of climate, for the honey-bee (Apis mellifica) which was intro- 
duced about thirty years ago, has spread over both Islands.* 
The Diptera are more numerous than the Hymenoptera, sixty species being 
known. This is just opposite to what obtains in most countries, including 
Australia and South America. Of these Tipula senex is found in Australia ; 
Musca taitensis in Polynesia; and Musca lemica in both Australia and 
Polynesia. Although most nearly allied to Australia, our dipterous fauna 
must have been derived from other localities as well, for the genus Diphysa 
occurs only in Mexico and Brazil ; Actina in Europe; Cenosia and Sapromyza 
in Europe and North America ; and Opomyza in Europe and the Mauritius. 
No genus is endemic. Of the earwigs we possess one endemic species (Yor- 
Jicula littorea), found only near the sea shore. 
Of the Lepidoptera I know hardly anything, and prefer waiting until 
Mr. Fereday has published his promised descriptions of the species, before 
examining their bearing on the present subject. But one fact stands out 
prominently, viz, that out of more than three hundred species, only eight 
belong to the butterfly section (Fereday, Trans. N.Z. Inst. IV., p. 217), and 
of these several are world-wide stragglers. 
Of Neuroptera about fifteen species are known. Of these, Perla opposita is 
found in Tasmania; and our representative of the white ants (Calotermes 
insularis) in Australia. This order appears to have more affinity with 
Tasmania than with Australia, and it is remarkable that the wide spread genus 
Perla, which is found throughout North and South America, and from Europe 
through India to China and Japan, is also found in New Zealand and Tas- 
mania, but not in Australia. JZeptocerus has also the same range, with the 
exception of not being known in China and Japan. Hermes extends from 
India to China and Java; it is also found in tropical Africa and South 
America, but not in Australia nor Tasmania. /Palingenia is found in Europe, 
India, North Africa, and North and South America; while Philanisus is 
peculiar to New Zealand. The Heteroptera are remarkable for their fragmen- 
tary character, and wide distribution. The thirteen known species belong to 
thirteen different genera, and nine families. Arma schellembergii is found in 
Australia and the Philippine Islands ; Cermatulus nasalis in Australia and 
Tasmania ; Platycoris immarginatus and Rhaphigaster amoyti in Australia ; 
Lygans pacificus in Australia, Tasmania, and India; and Nysius zealandicus 
in Tasmania; thus leaving not more than seven endemic species, three of which 
have not yet been properly examined, and may therefore be found to be 
identical with species inhabiting other countries. One of the endemic species 
(Rhopalimorpha obscura), however, belongs to a genus found nowhere else. 
* Mr. W. T. L. Travers informs me that the honey-bee was introduced into Nelson in 
1842, and that wild bees were common in 1850. 
