374 Mr. O. Salvia on new 



elude that it does not occur in Scandinavia, Denmark, 

 Germany, and Austro-Hungary ; for the Myriopoda of these 

 countries have been so thoroughly investigated, that such a 

 conspicuous species could not easily have been overlooked. 

 Unfortunately nothing or next to nothing is known of the 

 Myriopod fauna of Portugal and France, and in the absence of 

 this information any attempt to account for the existence of 

 this species in Britain must clearly be regarded as purely 

 provisional. 



No one will probably dispute that the species has been 

 introduced from the mainland iuto Madeira. Moreover, it is 

 quite likely that from Madeira it has made its way into the 

 Azores. But its existence in England may be due to at least 

 one or more than one of three causes — either the species 

 inhabited England and France before the separation of the 

 former tract of land, or it has been introduced from the con- 

 tinent since the separation, or it has been carried over to us 

 from the Azores. In support of this last hypothesis we may 

 urge the great rarity of the species in England and its appa- 

 rent confinement to our south-western counties. For, coming 

 from so warm a locality, we should expect that it would only 

 be able to maintain itself in the extreme south-west, where 

 the climate is moist and relaxing and frosts are of rare 

 occurrence. The introduction of the species into England 

 from the Azores might have been effected, one would think, 

 by means of a floating tree-trunk driven before a south- 

 westerly gale. 



We can never, however, satisfy ourselves on these points 

 until collectors have rilled up the gaps in our knowledge with 

 respect to the Myriopod fauna of Portugal and France. 



XL. — Descriptions of new Species of Upupas and Trochili 

 in the Collection of the British Museum. By Osbert 

 Salvin, M.A., F.R.S. 



Upup^e. 



U-pupa somalensis. 

 Upupa epops senegalensis, Shelley, Ibis, 1885, p. 397. 



Adult male. Similar to that of U. epops, and with the pri- 

 maries and tail similarly Landed with white ; the upper back, 



