[iiAEEiNGTOx] CANADIAN PEOCÏOTKYPID^ 171 



Platygaster canadensis, s^. nov. = Isocyhus canadensis, Prov. 



Copiera jiolita. Say. = Galesus politus. Say. 



Platymischus torquatus, sp. nov. = Tropidopria torquata, Prov. 



Isotasius arietinus, sp. nov. = Mcgaspilus Harringtoni, Ashm. ? 



Acerota opaca, sp. nov. = Scelio opacus, Prov. 



On page 209 was described as the type of a new genus in the family 

 Chalcididaî : 



Trichasius clavatus, sp. nov. = Gryon clavatus, Prov. 



Two additional species are described in the Supplement aux Additions, 

 same volume, pages 399-406 : 



Tdemonus rufoniger, sp. nov. 

 Ti'ichacis aurijjes, sp. nov. 



Among the additions to the Braconidœ was described, page 154, 

 Ropronia pediculata, sp. nov., which the author, in the supplement, page 

 406, referred to the Proctotr3q:)idœ, but which Mr. Ashraead considers, 

 from the description and the figure of the wing, to be really a Braconid. 



Several of the species enumerated have not been identified by the 

 descriptions, and the tj^pes are not accessible to me, but accepting them 

 all as distinct species, it is seen that only twenty-six species were then 

 recognized in our fauna. This number has within the past decade been 

 greatly increased through the labours of Mr. W. H. Ashmead, who has 

 done so much to advance the knowledge of the Hymenoptera of America. 

 In the Canadian Entomologist, volume xx., pages 48-55, he published 

 'Descriptions of some new G-enera and Species of Canadian Proctotry- 

 pidœ," based on material fi-om Ottawa. His admirable monograph of 

 the North American Proctotr3'pid?e (^Bulletin J^5 U. S. Nat, Museum), 

 published in ]893, contains descriptions of many additional species. 

 These forms were chiefly from Ottawa, and identifications of already 

 dcsoribed species raised the number of Canadian sj^ecies to about ninety. 

 More recently he has been kind enough to publish for me further 

 "Descriptions of some new Genera and Species of Canadian Proctotry- 

 pidœ " (Canadian Entomologist, volume xxix,, pages 53-56, March, 1S97), 

 and to identify other material for me. The aid and encouragement 

 received during my long correspondence with this learned entomologist 

 are now most gratefully and warmly acknowledged. 



Notwithstanding the numerous S2:)ecies which have been described 

 from our fauna, the limited extent of our knowledge is evidenced by the 

 fact that forms apparently new to science are still abundant, and addi- 

 tions can be made to the lisl of species by almost any day's collections. 

 Hence I ventured to describe, in the Canadian Entomologist, volume 

 xxxi., pages 77-80, April, 1899, "Six new Ottawa Proctotrypida?," and 

 have with regret felt it necessary now to describe several additional 

 f-pecics, in order to incorporate them in this catalogue. 



