116 U. S. NATIONAL MUSEUM BULLETIN 216 



Kirkwood, Mo.; Oct. 19 at Charlottesville, Va.; Oct. 20 at Takoma 

 Park, Md.; and Nov. 7 at Arlington, Va. 



Rearing records associated with these specimens are: 9, from 

 Argyrotaenia velutinana, Arendtsville, Pa., June 5, 1921, S. W. Frost. 

 39, from Argyrotaenia velutinana, Wallingford, Conn., Apr. 23, 1921, 

 and May 20 and 23, 1920, B. A. Porter. 9, from Argyrotaenia velutinana, 

 "Camerons Mills," Va., Aug. 7, 1900. 49, from Argyrotaenia velutinana, 

 Kearneysville, W. Va., June and August 1955, D. W. Clancy. 9d\ 

 from Anthophila pariana, Wallingford, Conn., June 17, 26, and 28, 

 1922, and Aug. 6, 7, 14, and 15, 1922, B. A. Porter. d\ from Tortrix, 

 Kirkwood, Mo., Oct. 18, 1881, M. E. Murtfeldt. d\ from Tortricidae, 

 Apr. 2, 1944, W. R. M. Mason collection. 9, from Tetralopha robustella, 

 July 22, 1934. 9, from Phlyctaenia extricalis, Herndon, Va., August 

 30, J. F. Strauss. 39, from Tholeria reversalis, Aug. 5, 1890. d\ from 

 Buceulatrix sp. on Solidago, Kirkwood, Mo., May 15, 1885, M. E. 

 Murdtfelt. d" , from larva on Betula alba,, Essex County, N. J., July 

 6, 1902, W. D. Kearfott. 9, from pyralid, C. V. Riley collection. 

 9, from pyralid on Alnus incana. cP, from pyralid pupa, Silver Spring, 

 Md., May 31, 1938. 9, from Arundinaria, Mobile, Ala., Dukes collec- 

 tion. 9, from lepidopterous pupa on grass, Falls Church, Va., June 25, 

 1918, R. A. Cushman. 29, from skeletonizer larva, Morton, Wash., 

 collected Sept. 20, 1954, emerged Oct. 12 and 19, 1954, Carl Johnson. 



In our experience, the species occurs mostly in deciduous woods, 

 flying in semishade and rather low, often over dead leaves or dead 

 fallen branches. Not infrequently it is the commonest ichneumonid 

 to be found. 



This species is transcontinental in deciduous woods, but it is com- 

 moner in the East. Adults occur from mid-spring to mid-fall. 



4. Triclistus occidentis, new species 



Figure 187,d 



Male: Not known with certainty. 



Female: Front wing 3.3 to 5.5 mm. long; face weakly mat, its 

 punctures coarse, their interspaces about 0.3 their diameter; temple 

 weakly convex, its hairs moderately dense, evenly distributed; meta- 

 pleurum with to 15 hairs; median longitudinal carinae of propodeum 

 strong but rather blunt; areola narrowly pentagonal, gradually 

 confluent with basal area; costula present as a stub on lateral longi- 

 tudinal carina; hairs in area of second lateral area of propodeum 

 rather sparse; areolet absent, or present; hind. spur of hind tibia 

 (including its hairs) about 4.9 as long as wide; second segment of hind 

 tarsus about 2.8 as long as wide; first tergite about 1.30 as long as 

 wide, its dorsal carinae extending about 0.45 its length; last segment 

 of hind tarsus without a subapical ventral tooth or tuft of hairs on 



