IS PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



tured part broadening gradually behind; third tergite aciculate on 

 basal half; remainder of dorsum of abdomen smooth; ovipositor 

 sheaths distinctly longer than the body, very slender. 



Black; head black; clypeus brownish; palpi more or less dusky; 

 antennae blackish, including scape and pedicel; thorax black with 

 brownish tinge on sides of pronotum and on metapleura ; wings hya- 

 line; veins and stigma dark brown, the latter indistinctly paler at 

 extreme base; legs brownish yellow; posterior femora at apex, pos- 

 terior tibiae except at base, and all tarsi, blackish; abdomen black; 

 second and third tergites with a faint brownish tinge; three basal 

 sternites of abdomen piceous-black, the following black. 



Type.—U.S.liiM. No. 43491. 



Type locality. — Ottawa, Ontario, Canada. 



Host. — Peronea variana Fernald. 



Re7narhs. — Described from three female specimens reared by 

 K. E. Schedl. 



8. MAGROCENTRUS HARRISI De Gant 

 Macrocentrus harrisi De Gant, Proc. Ent. Soc. Washington, vol. 32, p. 164, 1930. 



Type. — In the United States National Museum. 



Exceedingly similar to pyraustae^ but differing especially in the 

 longer malar space, which is about as long as the clypeus, and in the 

 darker abdomen, as noted in the key. Face broad, rather strongly 

 transversely convex ; eyes small ; temples and cheeks rounded ; ocelli 

 very small, ocell-ocular line more than twice the diameter of an 

 ocellus ; antennae usually 42 to 48 segmented ; notauli punctate ; pro- 

 podeum granularly rugulose; mesopleura mostly smooth, polished; 

 metapleura rugulose on posterior half; apical teeth of trochanters 

 minute, indistinct; nervulus slightly postf ureal; first discoidal cell 

 very long; mediella less than twice as long as lower abscissa of 

 basella, which is more than one and one-half times, sometimes nearly 

 twice, as long as nervellus; three basal abdominal tergites closely 

 longitudinally aciculate. Black ; clypeus more or less reddish ; scape 

 and pedicel, palpi, base of mandibles, and the three basal sternites 

 of abdomen, pale yellow; legs yellow, except the posterior tibiae 

 outwardly and all the tarsi, which are more or less infuscated. Very 

 rarely the thorax is pale beneath. 



The material examined consists of the type and 10 additional spec- 

 imens in the National Museum representing a range in distribution 

 from the District of Columbia and New York to Colorado and north- 

 ward to Alberta; two specimens in the collection of the Boston So- 

 ciety of Natural History from Mount Washington, N. H., and Mount 

 Desert, Me., respectively; and 26 specimens from various New Eng- 

 land localities at the gipsy moth laboratory, Melrose Highlands, 



