THE CANADIAN ENTOMOLOGIST. 135 



The present volume, which contains 300 quarto pages and 16 coloured 

 plates, covers the Pterophorhia^ Or?ieodma and Tifieifia, and deals with 

 441 species, of which all but 35 are described for the first time. 



These 441 species are distributed among only 62 genera,t confirming 

 the theory, advanced by Meyrick, that the peculiar topographical condi- 

 tions of the islands, with their numerous separate valleys, are highly 

 favourable to specific differentiation, while the very limited area and the 

 consequent uniform climatic conditions have not tended to increase 

 correspondingly the originally limited number of genera. 



The great majority (420) of these species and 26 of the genera are 

 endemic to the islands. These endemic species on the whole indicate 

 Australian rather than Asiatic or American origin of the fauna, though the 

 total absence of Oecophoridce (a single introduced species excepted) is 

 remarkable, that being the most abundantly-represented family in the 

 Australian region. 



The remaining 21 apod^mic species are mostly of wide distribution, 

 including the cabbage moth, Plutella mactilipejmis; the tobacco and potato 

 moth, Phthorimcea operailella, and the sweet potato and Ipomea, Miner, 

 Bedellia somnulentella, besides more or less domestic species of Endrosis, 

 Monopis, Ti7iea and Setomorpha. 



The synonymy of one of these, Setomoi-pha rulella, Feller [evidently 

 but lately realized by Lord Walsingham, as it is only stated in the table of 

 distribution (page 754), and there in correction of that shown under the 

 genus in the body of the work (page 726)], is of decided interest, and will 

 necessitate the change of the name, hitherto used for the x^merican 

 specimens. Lord Walsingham recognizes as but one cosmopolitan species 

 the original type of the genus, riitella, Feller, from Africa ; dryas, Butler, 

 from Hawaii ; operosella^ Feller, with its synonyms as determined by the 

 writer, from America ; corticinella^ Snellen, from Celebes ; and discipunc- 

 tella^ Rebel, from the Canary Islands. I have long suspected this to be 

 the case, and heartily approve of the synonymy. x\ series of moths clearly 

 determinable as corticineiia, Snellen, was bred by the writer in 1906 from 

 a collection of pinned Philippine insects, which was received from Manila, 

 and which was totally destroyed by the larvae of the Setomorpha. This 

 series, including both sexes, can not be distinguished from typical speci- 

 mens oi operosella., Feller, from Texas. 



tThis number must, however, be somewhat enlarg-ed, as explained in the 

 following-. 



