PROCEEDINGS OF THE 



ENTOMOLOGICAL SOCIETY OF WASHINGTON 



VOL. 23 OCTOBER 1921 No. 7 



THE THOMAS SAY SPECIES OF ICHNEUMONIDAE. 



BY R. A. CUSHMAN AND A. B. GAHAN, Bureau of Entomology. 



The Say types are no longer in existence and the only means 

 of identification of the species are the original descriptions. 

 These are usually short and incomplete. But careful study of 

 a description will usually disclose some very characteristic 

 feature that points unmistakably to a certain genus and fre- 

 quently to a certain species. 



Say described a total of sixty-one species of Ichneumonidae 

 under the generic names Ichneumon, Pimpla, Op/iion, Anomalon, 

 Acaenitus, Banchus, Peltastes, Cryptus, and Agathis. He later 

 removed his Anomalon humeralis to Xorides. He thus employed 

 ten generic names. 



Of the sixty-one species, forty-four have been identified, 

 specifically or generically, and treated of by subsequent authors. 

 Most of these first identifications have proved to be correct. In 

 a few cases, however, the identifications are obviously wrong. 

 Ashmead has pointed out one such instance and Cushman 

 another and four more are indicated in the following pages. 

 Thirty-eight of the first revisions, therefore, have been verified 

 as have also the two corrections noted. Of the twenty-one 

 species remaining unrecognized we have been able to positively 

 identify fourteen. Six we have placed generically to our satis- 

 faction, although we have been unable to determine the species 

 in the available material. One species we have been unable to 

 place even generically. 



In listing synonymy we have in general listed references only 

 to the first revision and to generic changes. Unless otherwise 

 stated the published synonymy has been verified. 



The species are treated alphabetically under the genera in 

 which they were originally placed, and the genera are arranged 

 alphabetically. In case the species is considered to belong to a 

 genus different from the one in which it was originally placed 

 the original genus is placed in parentheses followed by the proper 

 genus. 



For each of the species here positively identified for the first 

 time and for each of the corrections in identification we have 

 designated a neotype. These neotypes are all in the National 

 Collection and each bears a red label with the word "Neotype." 



