THE FAMILY EUCHAKIDAE — GAHAN 457 



identical with the type in color and the whole lot shows a distinct 

 gradation from the one color to the other, I believe they are all one 

 species. The type specimen was collected as a pupa and the adult 

 reared out in the laboratory which may very well account for its 

 somewhat abnormal color. 



As thus constituted, O. loheeleri is not easily distinguishable from 

 what I believe to be true viridis Ashmead, In wheeleri the stigmal 

 vein is slender and about two and one-half to three times as long as 

 broad, while in viridis it is a little thicker and apparently about one 

 and one-half times as long as broad. In wheeleri the scape of the 

 female is pale testaceous, while in viridis the scape in both sexes is 

 more or less metallic. These differences are not very striking and 

 apparently subject to some variation so that it is not always easy 

 to decide to which species a given specimen belongs. It is not 

 improbable that future investigations may show that the differences 

 are merely racial or varietal characteristics and not specific 

 characters. 



In addition to the material already mentioned, the U. S. National 

 Museum collection contains the following specimens collected at Fort 

 Collins, Colo., by C. F. Baker : 2 specimens under No. 2121 taken on 

 Eriogonmn ejfusmn^ August 12, 1896; 2 specimens under No. 1596 

 taken on Eriogonum^ August 12, 1895; 1 specimen under No. 1604, 

 also on Eriogonimi^ August 20, 1895 ; and 1 specimen under No. 1373, 

 taken in August 1894. 



ORASEMA OCCIDENTALIS Ashmead 



Orasema occidentaUs Ashmead, Proc. Ent. Soc. Washington, vol. 2, p. 355, 1892. 



I can distinguish this species from luheeUH only by the much 

 darker (blackish green) color. The second sternite appears to be 

 smooth and polished instead of more or less distinctly punctate. The 

 abdominal petiole is only very slightly longer than broad. The head 

 and thorax are finely and deeply alveolately punctate, this sculpture 

 on scutellum overlaid with very fine longitudinally directed rugulae. 



The material examined comprises only the type, a single female, 

 taken in Los Angeles County, Calif. 



ORASEMA MINUTA Ashmead 



Orasema minuta Ashmead, Ent. Amer., vol. 3, p. 185, 1888. 



Orasema minuta was described from one specimen taken at Jack- 

 sonville, Fla., and said by Ashmead to have been a male. This type 

 specimen, which is in the U. S. National Museum collection, has lost 

 the gaster, so that it is impossible now to be sure of its sex. The 

 abdominal petiole, which is still intact and which is about as long as 

 the hind coxae, appears rather short when compared to that of other 



