414 THE CANADIAN ENTOMOLOGIST. 



catalogue: of thr genrra of the hemipterous 



family aphid.e, wi rh their typical species, 



together with a list of the species 



described as new from 1s85 



TO 1905. 



BY O. W. KIRKALDV, HONOIAH.U. 



It is now twenty years since tlie lamented Jules Lichtenstein published 

 the first — and, unfortunately, last — part of his proposed monograph of the 

 Aphidte (a). This instalment contained a list, without references, of the 

 genera and species known to Lichtenstein, but, as will be seen from the 

 following pages, a large number of names was omitted and some were 

 misapplied, so that a new list of genera should be useful, having regard to 

 the interest and importance of the family. As the Aphid volume of 

 Lethierry and Severin's " Catalogue gene'ral des He'mipteres " may be 

 expected to appear within a few year.^, I have not added a list of all the 

 species ; those, however, described since Lichtenstein's Monograph, are 

 now enumerated. 



This list was prepared originally for my own use in studying the 

 Hawaiian Aphid fauna, all the forms of which are introduced, and, indeed, 

 but few in number. The differences of opinion as to the validity of cer- 

 tain generic conceptions are so varied that it may well be that mistakes 

 have been made here in this connection, as I can scarcely find two authors 

 agreeing in their conception of what constitutes a genus in this family. 



The works cited are almost all in my own library, and I am therefore 

 responsible for the accuracy of the references, except in a few cases 

 marked +. " 



The following abbreviations will materially shorten the paper. 



Ann. Belg. = Annales de la Sociele Entomologique de Belgique. 



Ann. France = Annales de la Societe Entom. de F'rance. 



Bull. France = Bulletin de la Societe Entom. de F'rance. 



Bull. Ital. = BuUetino Soc. Entom. Italiana. 



Cowen Colorado = Cowen, in Bull. Colorado Agr. Exp. Sta. , 31. 



Hunter Bull. Iowa = Hunter, in Bill. Iowa Agr. Coll. Sta., 60. 



Lichtenstein Mon. peup = f Lichtenstein, Monographic des pucerons 

 du peuplier. 



Oestlund Bull. = Oe^tlund, Bull. Geol. Survey, Minnesota IV. 



Oestlund Report = Oestlund, 14th Ann. Rep., Geological Survey, 

 Minnesota. 



(a) " Les Pucerons. Monographie des Aphidiens," pp. 1-188, Pis. I-IV 

 (coloured). Monlpellicr, 1885. 

 December, 1905. 



