ART. 13 DESCEIPTIONS OF IGHlN"EUMOIsr-FLIES CITSHMAN' 6 



all femora and front and middle tibiae ferruginous, joints 2-5 of 

 hind tarsus brown, legs otherwise black. 



Type locality. — Calgary, Alberta. 



Type.—C2it. No. 40433, U.S.N.M. 



Two females colected by George Salt, the type on August 5, and the 

 paratype on July 19, 1924. 



Genus AGROTHEREUTES Foerster 



Probably not generically distinct from Spilocryptiis Thomson, 

 of which it is sometimes treated as a subgenus. Viereck^ uses it to 

 replace Cryptus Fabricius, which he considers to be preoccupied by 

 Gryptus Jurine. It is here used, in its original restricted sense, as 

 including subapterous forms of the tribe Cryptini related to Spilo- 

 cryptfws. 



No North American species referable to the genus in this restricted 

 sense appears to have been described. The following three new 

 species are typical, agreeing with all characters assigned to 8pilo- 

 cryptus in Schmiedeknecht's keys^ except those of wing venation. 

 Schmiedeknecht considers Agrothereutes a subgenus of Spilocryptus. 



All three species have the following characters in common: Head 

 black, granularly opaque, clypeus polished and sparsely punctate; 

 temples strongly sloping, weakly convex; eyes large, bulging, very 

 slightly divergent below ; lower margin of antennal foramen at about 

 lower fourth of eye ; flagellum slightly thicker at apex than at base, 

 blackish with the basal joints reddish and an incomplete annulus 

 spanning joints 5-8 white. Thorax, except mesoscutum, scutellum, 

 postscutellum, and mesosternum, which are shining, subopaquely 

 roughened; propodeum with basal carina medially and pleural 

 carinae obsolete and apical carina defined only at angles, where it 

 is prominent; legs testaceous, hind femur at apex, and hind tibia 

 except at extreme base fuscous, basally whitish, the same pattern 

 but paler on middle and front tibiae. Abdomen granularly sub- 

 opaque, the first tergite polished; first three tergites reddish, others 

 black, the seventh with a median apical white spot. 



KBT TO NORTH AMERICAN SPECIES 



1. Thorax largely red rufopectus, new species. 



Thorax black 2 



2. First tergite fully two-thirds as broad as long ; abdomen basally rufous, third 



tergite more or less black apically slossonae, new species. 



First tergite less than two-thirds as broad as long; abdomen basally testa- 

 ceous, third tergite not at all black microlatus, new species. 



^ Hym. Conn. 2 Opusc. Ichn. 



