136 THE CANADIAN ENTOMOLOGIST. 



All the genera and species are described in the careful manner 

 characteristic of the author, and the recognition of the species is further: 

 greatly facilitated by the very excellent colored plates, representing every 

 species. It was a joy to the writer to be able to name, without any diffi" 

 culty, a dozen species from the National Museum's Hawaiian collection in, 

 as many minutes. 



With all this acknowledged, it seems hypercritical to require more ; 

 yet another plate, giving delineations of the venation of all the genera,, 

 would have been a valuable addition. Not that the genera may not be 

 recognized from the very perfect descriptions, but in any eventual re- 

 arrangement of the genera, or in comparative studies with others of other 

 faunas, where minute details, at present not reckoned with, may have to be 

 relied on, such a plate of careful figures of the venations would have been, 

 exceedingly valuable to the student who has not access to a good Ha- 

 waiian collection. 



One striking example of this need of structural figures is the genus 

 Aristotelia, of which one is surprised to find, that Lord Walsingham 

 has retained the same abstract idea as in his Wect Indian paper of lo 

 years ago (Proc. Zool. Soc, London, 1897, P^g^ 63), notwithstanding 

 subsequent revisional work in that group. With this originally monotypi- 

 cal genus, which has been limited by Meyrick and the writer to the 

 species agreeing in venation with the type, decurielia, Hubner, Lord 

 AValsingham continues to associate quite different forms. While this may 

 not be of much importance ia the case of such closely-related genera as 

 Chrysopora, Clemens {Nofnia, Clemens ; Afajuiodia, Heinemann), it is 

 decidedly mischievous with a genus like Evagora, Clemens, which belongs 

 to a very different group. In this genus, Ariitotelia (Walsingham), figures 

 of the venation, or at least a statement of it under each species, would 

 have greatly facilitated a revision, which must in time take place, as 

 even the coloured figures plainly show that the included species can not be 



congeneric. 



Lord Walsingham's arrangement of the genera in families presents 

 some interesting new departures. 



The hitherto generally accepted family, XylorydidcE, is absorbed 

 without even a group name among the Gelechiidcp., probably through 

 sound reasoning, but without any presented argumentation. To the writer 

 it would seem expedient to retain this admittedly natural group, at least" 

 as a sub-family, with the position of vein 2 in the fore wing as the dis- 

 tinguishing character. 



