No. 2317. FIVE TRIBES OF ICHNEUMONINAE—ROHWER. 421 



males. The size of the yellow spots varies somewhat. The legs are 

 usually rufofeiTUginous, but occasionally the hind legs, especially 

 the coxae, are blackish. In one female from Colorado the hind legs 

 are black with a pale spot on the coxae and tibiae and tarsi brownish 

 beneath. 



Distrihution. — Canada; Cap Rouge, Canada (type-locality of 

 crevieri); New Jersey (type-locality of alhomaculata) ; Erie County, 

 New York (Blackman); Detriot, Michigan; Great Falls, Virginia 

 (Banks) ; Morgan town, West Virginia (Hopkins) ; Colorado National 

 Forest; Hoquiam, Washington (Burke) ; Vancouver, British Columbia. 



Host. — Parasitic on Xeris sp. in spruce, from observations made by 

 H. E. Burke and on file in the Branch of Forest Insects, Bureau of 

 Entomology. 



RHYSSA HOFERI, new species. 



The color of this species is unusual for members of this genus, and 

 because of this hoferi has a superficial resemblance to small species of 

 the genus Megarhyssa and to Lahena. In structure this species is 

 certainly Rhyssa. The color, as well as the sculpture of the pro- 

 notum and tergites, readily distinguishes it from other Nearctic 

 species. 



Female. — Length to end of abdomen, about 16 mm.; length of 

 ovipositor beyond abdomen, 20 mm. Head, with the exception of 

 the obscurely transversely wrinkled face, smooth; vertex with very 

 fine aciculation and in postocellar area with scattered punctures; 

 ocelli rather large, the postocellar line sfightly shorter than the 

 ocellocular line; antennae shghtly thickening apicaUy, the third 

 joint distinctly longer than the fourth; sides of the pronotum dor- 

 sally with separate, fairly distinct punctures on a granular surface; 

 anterior coxae truncate anteriorly; prepectal carina present only 

 ventrally; mesepisternum mostly coriaceous; propodeum coriaceous; 

 tergites opaque, finely punctato-coriaceous; tubercles on the second 

 stemite elongate, areolet distinct, triangular, the second recurrent a 

 little more than its width basad of second intercubitus. Ferru- 

 ginous; inner orbits, spot on clypeus, posterior orbits narrowly, 

 narrow dorsal margin and lower anterior margin laterally of pronotum, 

 spot beneath tegulae and anterior tibiae basaUy, yellowish; sutures 

 of the thorax and base of second, third, and fourth tergites narrowly 

 brownish or blackish; antennae uniformly ferruginous; wings in- 

 fumate, with the area along the radius and occupying most of the 

 cubital area dusky; venation brownish, stigma yellowish. 



Type locality. — Garden of the Gods, Colorado. Described from 

 two females (one type) caught, June 23, 1915, while ovipositing in 

 dying tree of Pinus edulis infested with Buprestidae. Material 

 collected by George Hofer, for whom the species is named. 



Type.— Cat. No. 22133, U.S.N.M. 



