45 
Coxa pale; abdomen Avith broad central black stripe and with 
apex beneath strongly infuscated; sheath black. 
Second recurrent interstitial with first cubital. 
11. harringtoni n.sp. 
Second recurrent received well within second cubital cell. 
12. fylesin. sp. 
Femora pale; orbits pale or reddish. 
Sheath broad ; rounded or truncate at apex ; stigma brown. 
13. Mncaidi n. sp. 
Sheath narrow, tapering; stigma yellow 14. fovcatus n. sp. 
Sheath narrow, tapering; stigma bicolorous; mesepimera with 
pectoral black spot 15. bicolor n. sp. 
Head and thorax black; abdomen pale, except sometimes basal dorsal arc 
and, rarely, terminal arcs. 
Hind femora black, at least apically. 
Hind tibia} with brown gradually increasing in intensity from 
base to tip ; orbits and mouth parts pale 16. tricolor n. sp. 
Hind tibhe with basal one-third or one-half white; head black. 
Elongate; basal arc black. 
Terminal segments black ; legs pallid and black. 
17. rufocinctus Harrington. 
Terminal segments yellow ; legs reddish yellow and black. 
18. erytlvrog aster Norton. 
Short ovate; basal arc indistinctly or not at all infuscated. 
Three terminal arcs pale 19. corylus Cr. 
Three terminal arcs black 20. dyarin. sp. 
Hind femora pale. 
Veins and stigma dark brown. 
t Angles of pronotum and the coxas black.. 21. fulvicrus Prov. 
Angles, etc., pale. 
Lateral lobes mesonotum mostly black ; basal segment of 
abdomen infuscated 22. populi n. sp. 
Lateral lobes mesonotum reddish ; basal segment pale. 
23. hudsonii Dyar. 
Veins and stigma yellowish. 
Orbits and spot below bases of antenna' pale. 
24. auratus n.sp. 
Orbits and spot below bases of antenna' black. 
25. calif ornlcus n. sp. 
Head and thorax more or less pale above. 
Antenna' yellow or ferruginous. 
Hind femora mostly black 26. antennatus n. sp. 
Hind femora pale 27. ribesii Scop. 
Antenna black ; legs pale 28. edwardsii Cr. 
AA. Prevailing color of dorsum black ; pectus and venter pale (except dusky spot on 
pectus of hyaUnns and minute one in case of rufus, and sometimes venter of 
abdomen black in mUltaris). 
Head altogether black. 
Thorax with lateral lobes reddish ; abdomen black dorsally . 29. militarisGr. 
Thorax and abdomen reddish, except mesoscutellum, metanotum and basal 
central area of abdomen 30. thoracicus Harr. 
Head black ; mouth parts and orbits pale. 
Stigma and costa brown. 
Scutelluni black. 
Head nearly spherical, viewed latterly; clypeus narrowly and 
deeply excavated, short, robust 31. odoratus Dyar. 
