Sphecoidea of Nebraska 121 
Canyon (1) and Warbonnet Canyon (1); June 25 to September 
27; visits flowers of Ratibida columnaris, Melilotus alba, Helian- 
thus sp., Solidago sp. and Gutierrezia sarothrae. 
Bicyrtes quadrifasciata (Say). 
1824. Monedula 4-fasciata Say, Exped. St. Peter's River, 11, p. 336. 
1895. Bembidula quadrifasciata Fox, Proc. Acad. Nat. Sc. Phil., p. 
353. 
1917. Bicyrtes quadrifasciata Parker, Proc. U. S. Nat. Mus., LII, 
De OS: 
Males 16, females 9: Omaha (14), Louisville (8), South Bend 
(1), Meadow (1):and Haigler (1); July 4 to September 12; 
visits flowers of Melilotus alba, Symphoricarpos symphoricarpos 
and Solidago glaberrima. 
Bicyrtes capnoptera (Handlirsch). 
1889. Bembidula capnoptera WHandlirsch, Sits. Akad. Wissensch.> 
Wien, XCVIII, p. 497. 
1895. Bembidula capnoptera Fox, Proc. Acad. Nat. Sc. Phil., p. 354. 
1917. Bicyrtes capnoptera Parker, Proc. U. S. Nat. Mus., LII, p. 72. 
Males 2, females 5: Mitchell (7); July 20 to September 4; 
visits flowers of Medicago sativa. 
Bembix Fabricius 
KEY TO THE SPECIES 
Females 
1. Neither metanotum nor propodeum above (excluding postero-lateral 
Pumice anariccd swith YEMOW 22. os scna ca cadeante bens xs ¥xewnebce 2 
Metanotum or propodeum above or both marked with yellow ...... 5 
2. Fasciae on all tergites interrupted medially ..........cccsceseeners 3 
A part or all of the fasciae on tergites continuous ...........5....5 4 
@, Ultimate terzite strongly wrinkled .....)........066s00.ceceeee belfraget 
Ultimate tereite not wrinkled, punctate ....... 0.002. cesneneees spinolae 
4. Sides of thorax and propodeum with evident maculations. .primaaestate 
Sides of thorax and propodeum black, rarely with inconspicuous macu- 
Paie  TCREPIStSI NA AUOVE . 6% 60s os anc eae ne tees ae apa spinolae 
Cowimpsedistinetiy. clouded medially % .. i d.se ieee. ee cs ene's nubtlipennis 
SARC Sie Oe crew Casale ep. «te ania male are oie REA Eee ae ee 6 
Heehiesonotimewitn no trace Of discal. mankStacs «ese apices tiaciclr'> < 7 
Mesonotum with more or less well developed discal marks ......... 8 
439 
