THE CANADIAN ENTOMOLOGIST. 181 



•carina also well defined, spiracles long-ovate and prominent; neck 

 of the propodeum short, smooth and shining and without a distinct 

 circular depression either side. Wings hyaline, the postmarginal 

 as long as the marginal, marginal cilia of the anterior wings absent, 

 except for a very few weak cilia on the posterior margin toward the 

 apex; basal portion of the anterior wing to the apex of the costal 

 ■cell hairless, except for a single row of hairs in the costal cell, re- 

 mainder of the wing ciliate but with the hairs very short. Anterior 

 and posterior coxae more or less metallic on the outer side; median 

 pair brownish; all trochanters, femora, tibiae, and tarsi pale tes- 

 taceous, the femora and tibia' tinged with brownish. Abdomen 

 •ovate, pointed at the apex, smooth and shining, dark brown, with 

 the basal segment metallic. 



Male. — Coloured like the female, but a brighter green, with 

 stronger reflections; antennae shorter thaft in the female, the joints 

 o^ the funicle not as long as broad, the club short and compact. 



Type locality. — Upper Marlboro, Prince George County, Md. 



Host. — Cladins pectinicornis. 



Type.— Cat. No. 15,506, United States National Museum. 



Thirty females and, three males in the type series. The type 

 and several paratypes deposited in the United States National 

 Museum. Remaining paratypes in the collection of the Maryland 

 Experiment Station, College Park, Md. 



Mr. E. N. Cory, of this Department, brought me several 

 pupa^ of the sawfly which he had secured on rose bushes at the farm 

 of Mr. R. S. Hill, Upper Marlboro, Md., August 6, 1912. At the 

 same time he turned over to me a single live female of the parasite 

 which he had taken crawling over the sawfly cocoons. This para- 

 site and the sawfly cocoons were placed together in a vial on my 

 •desk. The parasite died and was pinned August 12, without 

 having been observed to oviposit. August 19 there emerged in the 

 \ial thirteen specimens of the parasite. Examination of the co- 

 coons on this date showed that all these parasites had come from a 

 single sawfly pupa. One of the remaining cocoons was found to be 

 packed full of the naked pupae of the parasite, which at this time 

 were pale-yellowish, with the eyes dark-red, and measured a little 

 over 2 mm. in length. August 27th, adults to the number of 20 

 •emerged from this lot of pupa.\ While proof is lacking, it seems 



