45 
Cox pale; abdomen with 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. kincaidi n. sp. 
Sheath narrow, tapering; stigma yellow ...-.. 14. foveatus n. sp. 
Sheath narrow, tapering; stigma bicolorous; mesepimera with 
pectoral black spots :.sa-c.cjcecusossnt eae aeeee 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 tibie with brown gradually increasing in intensity from 
base to tip; orbits and mouth parts pale.._... 16. tricolor n. sp. 
Hind tibiz with basal one-third or one-half white; head black. 
Elongate; basal are black. 
Terminal segments black; legs pallid and black. 
17. rufocinctus Harrington. 
Terminal segments yellow; legs reddish yellow and black. 
18. erythrogaster Norton. 
Short ovate; basal are indistinctly or not at all infuscated. 
Three terminal arcs pale...........-..-- T. 19. corylus Cr. 
Three terminal ares black .-..........-... 20. dyarin, sp. 
Hind femora pale. 
Veins and stigma dark brown. 
Angles of pronotum and the cox black.. 21. fulvicrus Prov. 
Angles, etc., pale. 
Lateral lobes mesonotum mostly black; basal segment of 
abdomen infuscated................¥ 22. populin. sp. 
Lateral lobes mesonotum reddish; basal segment pale. 
23. hudsonii Dyar. 
Veins and stigma yellowish. 
Orbits and spot below bases of antenne pale. 
/ 24. auratusn.sp. 
Orbits and spot below bases of antenn black. 
25. californicus n. sp. 
Head and thorax more or less pale above. 
Antenne yellow or ferruginous. 
Hindefemora mostly, black... 4-42 -- eee 26. antennatus n. sp. 
ime prem oramp alesse. sate. acne se cee cos oe oe Le. 27. ribesii Scop. 
Antenne black; legs pale..........-...-.-...------ 28. edwardsii Cr. 
AA. Prevailing color of dorsum black; pectus and venter pale (except dusky spot on 
pectus of hyalinus and minute one in case of rufus, and sometimes venter of 
abdomen black in militaris). 
Head altogether black. 
Thorax with lateral lobes reddish ; abdomen black dorsally 199. militaris Cr. 
Thorax and abdomen reddish, except mesoscutellum, metanotum and basal 
ceniralsareaor abdomen! 2-2-2. -seaeeeececcses. cece 30, thoracicus Harr. 
Head black; mouth parts and orbits pale. 
Stigma and costa brown. 
Scutellum black. 
* 
