ICHNEUMON-FLIES OF AMERICA: 1. METOPIENAE 113 



Mountain National Park, near Estes Park, Florissant, Lyons, Phantom 

 Valley at 9,400 ft. in Rocky Mountain National Park, and Westcliffe) ; 

 Iowa (Sioux City); Manitoba (Churchill and Transcono); Montana 

 (Lake Co.); Nevada; New Mexico (Jemez Springs); Oregon (Fish 

 Lake at 7,000 ft. in the Steens Mts. and west side of the Steens Mts. 

 at 6,000 ft.); Saskatchewan (Roche Percee); Utah (Duchesne River 

 and Park City); Washington (Elbe); Wyoming (Canyon Camp in 

 Yellowstone National Park and Jay Em); and Yukon (Whitehorse). 



Most collecting dates are in June and July. Early and late collecting 

 dates of interest are: May 5 at Victoria, B. C; May 12, 13 and 17 at 

 Sioux City, Iowa; May 18 in Lake Co., Mont.; May 28 near Alpine, 

 Ariz.; June 1 at Steelhead, B. C; August 2 at Cascade Lodge in 

 Rocky Mountain National Park, Colo.; August 4 at Canyon Camp, 

 Yellowstone National Park, Wyo.; August 7 at Whitehorse, Yukon; 

 August 13 at Elbe, Wash.; and September 4 at Wigwam Inn, Burrard 

 Inlet, B. C. 



This species is widespread in the Canadian and Hudsonian zones 

 in the western half of North America. Adults occur mostly in June 

 and July. 



3. Tricistus emarginalns (Say), new combination 



Figures 186,f; 187,c 



Exochus emarginalus Say, 1829, Contrib. Maclurean Lyceum Arts Sci., vol. 1, 

 p. 76 (Leconte ed., vol. 1, p. 380). Type: Indiana (destroyed). 



Exochus fulvipes Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol. 3, p. 285; cf, ? 

 (new synonymy). Lectotype: ?, Pennsylvania (Philadelphia). 



Front wing 3.3 to 5.7 long; face mat, its punctures of moderate 

 size, separated by about 0.6 their diameter; male temple moderately 

 convex, with dense hairs; female temple weakly convex, its hairs 

 dense and evenly distributed; metapleurum with to 10 hairs; 

 median longitudinal carinae of propodeum strong but rather blunt; 

 areola about 1.4 to 1.8 as wide as basal area, with which it is gradually 

 confluent; costula usually present only as a triangular stub on lateral 

 longitudinal carina but sometimes almost or quite complete, when 

 complete weaker than median longitudinal carinae; second lateral 

 area of propodeum, when defined, with outer side about 1.4 as long 

 as inner side; hairs in area of second lateral area of propodeum rather 

 sparse; areolet usually present; hind spur of hind tarsus (including 

 its hairs) about 4.5 as long as wide; second segment of hind tarsus 

 about 2.35 as long as wide; first tergite about 1.25 as long as wide, 

 its dorsal carinae extending about 0.53 its length; last segment of 

 hind tarsus with a very small to rather large, ventral, subapical 

 flange or tooth on the inner side that is surmounted by a hair tuft; 

 notch in apex of subgenital plate about 0.2 as deep as wide. 



