THE CANADIAN ENTOMOLOGIST 151 



ing along roadways or on old pocket gopher hills. An individual 

 discovered on September 9th finished her work soon after being 

 found, and her method of covering the egg cavity did not differ 

 from that of atlanis. A second example found on a trail on 

 September 26th, produced an egg-sack, the lower two-thirds of 

 which was almost horizontal owing to the hardness of the soil be- 

 neath. A third, located September 28th, was on the edge of a 

 stubble field alongside of a Dissosteira Carolina, engaged in the 

 same operation. When first discovered the former had her abdo- 

 men fully extended into the soil but ten minutes later she abandoned 

 this place, due to the approach of a male Dissosteira. She returned, 

 however, a few minutes later, and drilled a hole close to the former, 

 one taking ten minutes to do so. She then became motionless for 

 49 minutes, at the end of wlwch her work was completed. The 

 egg-sacks of these three individuals contained 94, 98 and 102 eggs, 

 respectively. 



AN INTERESTING NEW HYMENOPTEROUS PARASITE. 



' BY A. B. GAHAN, BUREAU OF ENTOMOLOGY, U.S. DEPT. 

 OF AGRICULTURE, WASHINGTON, D.C. 



The description of this new species is desirable at this time 

 in order to make the name available for use by Prof. S. I. Korn- 

 hauser, of Northwestern University, Evanston, Illinois, who con- 

 templates the early publication of an account of its life-history. 



Family BETHYLID.^. 



Subfamily DRYININ^. 



Aphelopus theliae, new species. 



Female. — In Ashmead's key to species of this genus (Bull. 45, 



U. S. N. M.) this species runs to melaleiicus but differs in the 



colour of the legs and in the absence of any white on the head. 



In J. J. Kieffer's key (Das Tierreich, 1914, Vol. 41, p. 215) it runs 



to affinis, but differs from the description of that species in having 



the face entirely black and the legs almost entirely black. 



Length 2.2 mm. Black; mouth-parts except mandibles pale 

 yellow, mandibles piceous; antennae black, the scape beneath and 

 the pedicel reddish; front tibiae and tarsi more or less reddish; 

 wings hyaline, the stigma black; veins pale. Whole head very 

 finely, closely, almost granularly punctate, .the punctures slightly 



May, 1918 



