DESCRIPTIONS OF NEW ICHNEUMONID/E IN THE COLLECTION 

 OF THE U. S. NATIONAL MUSEUM.* 



William H. Ashmead. 



This paper represents the results of a continuation of the work men- 

 tioned in the introduction to the previous paper by tbe writer, on the 

 new Bracouida3 in the collection of the Museum, published on pages 

 Gll-671 of the Proceedings for 1888. It is prepared at Dr. Kiley's in- 

 stance, and is based upon the collections donated by him and upon his 

 recent reariugs at the Department of Agriculture, including, as be- 

 fore, a large number of bred species. Where source is not indicated, 

 it is from Dr. BiJey's collecting. 



Subfamily ICHNEUMONES^E. 



ERISTICUS Wesmael. 



This genus is confined to Europe and no species has yet been de- 

 scribed in it from North America. The species described in it below 

 agree with the definition of the genus very closely, but may possibly 

 be separated subsequently upon comparison with authentic European 

 types. 



All the species but one are smooth, highly polished, and were taken 

 in Wisconsin. 



The following table will aid in determining the species: 



Thorax, black : 2 



Thorax dark ferruginous, four terminal abdominal segments, black, 9 . 



E. in in tit us sp. nov. 



2. Abdomen not entirely ferruginous 3 



Abdomen entirely ferruginous; scutellum,postscutellum, and a spot on the disk of 



metathorax, yellow. 9 E. rufigaster sp. nov. 



3. Scutellum and postscutellum, yellow. 



Metathorax, entirely black. 

 Three basal abdominal segments, red, the following black, ^ . 



E. apicalissY>. nov. 

 Two basal abdominal segments, red, thefollowiug black. 9 . 



E. basilar 'is sp. nov. 



Second abdominal segment, only red. 9 E. cincius sp. nov. 



Metathorax with two yellow spots. 



Second abdominal segment and apex of third, red. $ . .. E. binolatus sp. nov. 



* This paper has been prepared from material in the Museum, and the types are all 



in the Museum collection. — C. V. Riley, Honorary Curator of Insects. 



Proceedings National Museum, Vol. XII — No. 779. 



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