138 U. S. NATIONAL MUSEUM BULLETIN 216 



Black. Flagellum blackish basally, the rest blackish brown in 

 male, reddish brown in female; subtegular ridge, apex of front and 

 middle femora, extreme apex of hind femur, basal 0.6 of tibiae, and 

 middle and hind tibial spurs, ivory white; apical 0.4 of front tibia, 

 front tibial spur, and front and middle tarsi, brown; hind tarsus 

 fuscous; tegula whitish, its apical 0.5 ± brown. In some specimens, 

 most often in females, the apical 0.3 ± of the second through fourth 

 tergites are brownish. 



Specimens (23 cf, 619): From Alberta (Slave Lake and Tofield); 

 Connecticut (Colebrook) ; Maine (Bangor, Southport, and South West 

 Harbor) ; Maryland (Takoma Park) ; Massachusetts (Forest Hills, 

 Holliston, Marblehead, and Milton) ; Michigan (Alto, Ann Arbor, 

 Benzie Co., Isabella Co., Lake Co., Mecosta Co., Menominee Co., 

 Midland Co., and Saginaw Co.) ; Nebraska (West Point) ; New Hamp- 

 shire (Jaffrey) ; New Jersey (Bridgeboro, Burlington, and Montclair) ; 

 New York ("Bryn Mawr Park," Chafee, Ithaca, Nyack, and White 

 Plains) ; North Carolina (Cedar Mt.) ; Ohio (Put-in-Bay) ; Ontario 

 (Rock Cliff Park, Spencerville, Timagami, and Toronto) ; Quebec 

 (Aylmer and "Sainte Anne's"); South Carolina (Venus); Vermont 

 (Stowe) ; Virginia (Glencarlyn) ; and Wisconsin (Madison) . 



Collecting dates are in early fall. Especially early and late dates 

 are: August 21 at Timagami, Ont.; August 15 at Slave Lake, Alta.; 

 August 24 and 31 at Spencerville, Ont.; August 25 at Tofield, Alta.; 

 August 28 at Milton, Mass.; August 29 at Ithaca, N. Y.; August 30 

 in Menominee Co., Mich.; September 24 at Toronto, Ont. and at 

 Bridgeboro, N. J.; September 26 at Ann Arbor, Mich.; September 30 

 in Midland Co., Mich.; October 4 at Cedar Mountain, N. C, and 

 at Burlington, N. J.; October 8 and 20 at Takoma Park, Md.; and 

 October 13 at Put-in-Bay, Ohio. 



We have found the species only in weedy meadows, on the flowers 

 of Aster. Washburn (loc. cit.) mentions finding the species at Itasca 

 Park, Minn., in late August, "sunning on Asters." 



This species is in the Alleghenian fauna. Adults may be found on 

 the flowers of Aster, in early fall. 



11. Genus Spudaeus 



Figure 171, b 



Trachyderma Gravenhorst, 1829, Ichneumologia europaea, vol. 3, p. 283; name 

 preoccupied. Type: Trachyderma scabra Gravenhorst; monobasic. 



Spudaeus Gistel, 1848, Naturgeschichte des Thierreichs fur hohere Schulen, p. xi; 

 new name. 



Tylocomnus Holmgren, 1873, Ofvers. Svenska Vetensk. Akad. Forh., vol. 30 (4), 

 p. 76; new name. 



Front wing 9.0 to 11.0 mm. long; body with coarse, moderately 

 dense punctures ; combined face and clypeus weakly convex, the upper 



