166 Psyche [October 



in ant nests, where it is to be supposed they are parasitic on the 

 immature stages of the hosts. 



DIPTERA. 



Family Syrphid.e. 



Se\'eral pupae of a Microdon-like insect were found at Diquini 

 beneath bark with colonies of Pheidole flavens Roger var. haytiana. 

 These pupae are small (4 mm. in length) and reticulately tuber- 

 culate. Between these tubercles the surface is smooth. The 

 tegument is very thin. I was not able to rear any adults. 



NOTES AND DESCRIPTIONS OF PIPUNCULID.E. 



By Nathan Banks, 

 East Falls Church, Virginia. 



During the past few years I have taken a number of Pipunculidse, 

 and in going over the material with that named by Cresson I am 

 able to identify most of them and find four species that are plainly 

 new; a few other specimens may also be new. Several of the 

 species I have taken in Virginia for the first time, making 27 

 species of Pipimcnlus from Virginia. 



Pipunculus loewi Kertz. 



A male from Glencarlyn, Va., 23 June, runs here in the table and 

 agrees with the description. It has a banded abdomen as in my 

 new species cinctus, but the hypopygium is larger, not cleft, and 

 the stigma is shorter. 



Pipunculus houghi Kertz. {femoratus Cr.). 



A female from Falls Church, Va., 9 July, agrees with description 

 and the male cotypes. 



Pipxmculus aequans Cr. 



Various specimens from Chain Bridge, Falls Church, and Glen- 

 carlyn, Va., in June and July agree with a cotype. 



Pipunculus varius Cr. 



From Chesapeake Beach, Md., and Falls Church, Va., in Sep- 

 tember and October, agree with type from Pennsylvania. 



