546 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. o8. 



107. APANTELES YAKUTATENSIS Ashmead. 



Apanteles yakutatensis Ashmead, Proc. Wash. Acad. Sci., vol. 4, 1902, p. 249. 

 Apantcles {Frotapmiteles) hyslopi Vikeeck, Proc. U. S. Nat. Mus., vol. 38, 

 1910, p. 379. 



Hahitat. — Alaska ; Washington ; Utah. 



Hosts. — Autograjjha gamma^ var. ealifornica Speyer (Viereck) ; 

 Agrotis c-nigruvi Linnaeus. 



Cocoons. — Gregarious, enclosed in a firm mass of whitish silk. 



The types of yakutatensis and hyslopi have been compared, and the 

 writer is of the opinion that they represent the same species.* It is 

 quite possible that yakutatensis is but a geographical form of 

 xylinus, which it resembles structurally and biologically, differing 

 only in its darker coloring. 



Besides the types of this species and those of its synonym, the 

 National Collection contains the following material: Six specimens 

 from Forest Grove, Oregon, reared by L. P. Rockwood from Agrotis 

 c-nig7'um under Webster No. 18456 ; five specimens, under Quaintance 

 No. 15454, from Sea view, AVashington, collected by H. K. Plank, are 

 without host record ; another small series from Grayland, Washing- 

 ton, is without host or collector's labels. The writer has also seen 

 a series from Utah. 



108. APANTELES CRAMBI Weed. 



Apanteles crambi Weed, Bull. 111. State Labor. Nat. Hist., vol. 3, 1887, p. 8. 



Habitat. — Illinois; Ohio; Maryland; Tennessee; South Dakota. 



Hosts. — Cramhus trisectus Walker; C. 7nutaMlis Clemens; C. 

 zeellus Fernald (Weed). 



Cocoons. — White ; gregarious, in cocoon of host. 



This species is represented in the National Collection by 1 specimen 

 from Champaign, Illinois, reared from Cramhus trisectus; 6 speci- 

 mens from Wooster, Ohio, labeled as parasitic on the corn web-worm, 

 reared by F. M. Webster, July T, 1885 ; 1 specimen from Mar3dand 

 without further data; a series of 15 specimens from Nashville, Ten- 

 nessee, reared from Cramhus mutahilis by G. G. Ainslie, under 

 Webster No. 12358; and a series from Elk Point, South Dakota, 

 reared from Cramhus mutahilis. 



109. APANTELES PLATHYPENAE, new species. 



Very similar to laevicej:>s, from which it differs in the venter of the 

 abdomen being usually entirely yellowish, in the disk of the scutellum 

 being weakly punctate, and in the much larger stigma. 



Female. — Length, 2.2 mm. Head with the vertex, temples, and 

 cheeks smooth and very strongly shining ; antennae almost or quite as 

 long as the body; mesoscutum with numerous distinct sharp punc- 

 tures, more scattered at the sides and posteriorlv; disk of soutellum 



