10. 
14. 
16. 
Sphecoidea of Nebraska 61 
the nearest eye margin; propodeum without a well-marked enclo- 
sure, the furrows forming it obsolete basally; mesepisterna not 
striated; mesonotum with the punctures more or less separated; 
Pate GEE GL, VEIN O Ww COSLACEOUS buco 'afYeru'c's is av wvle’ard. ave Biv o'aiaraie.aye alettene 9 
. Thorax with thick, matted pubescence of a pale fuscous color; length 
MPM ERUINL oan aU Cl imae Cleef emai credcievers (oidic eins asks Haein, eter oie’ cole set aint itas chet largior 
Thorax with thin pale, grayish pubescence; length 10 mm. or less, 
ViCiNUs 
Propodeum above with the central, longitudinal furrow wide, shallow, 
and much broadened basally, the furrow which margins the lateral 
ridges of posterior face outwardly not or indistinctly foveolate; 
MEE NESLISTeMUIelyn DlaCkcw-hevsiocdinta so cicvosiains Sere ciclere Ce dienes cognatus 
Propodeum above with the central, longitudinal furrow narrower, deep, 
scarcely broadened basally, the furrow which margins the lateral 
ridges of posterior face outwardly, distinctly foveolate or marked 
by strong, transverse ridges; prepectus more or less yellow..hilaris 
mie vei Broad: flat, not excavated. 2 se. sw.ce ceeds scot eccseees 12 
Pygidium narrowed apically and excavated -.........c.0cceceeeeee 16 
meAndomen lareely red, black apically? a2... .tciecss coos see e oes viereckt 
PNUCHOIIeIe OMETGE] VLA Kosten a chake Weise rere nichere oat ase take adore Gibtete lene sraiats 13 
. Mandibles yellow in greater part; scutellum immaculate; the two con- 
vexities of the enclosed area of propodeum with microscopic stria- 
HA CHAS HPO AG LOH st eiea rua errsites cieyene cel le wratoiet eee ate eo tarelamnsiie here ahe minimus 
Mandibles not yellow, black, reddish apically .................00: 14 
Scutellum black or with a minute spot; the intermediate tibiae yellow 
on basal portion only; yellow on pronotum broken into two, widely- 
separated spots; first joint of posterior and intermediate tarsi 
CLI GWY tent ea Oe rence ee rae Ot me CER ae Reine cee Mere ears inCaVUS 
Scutellum almost entirely yellow (rarely black), as is likewise the 
outer side of intermediate tibiae; yellow on pronotum forming a 
COMMIS Dati osiat cl steve are ter eee etch one mire teloravalettie re okavers! augue eve ereyets 15 
. Abdomen somewhat longer than head and thorax united, the first seg- 
ment not broad and narrowed basally; episternal furrow of meso- 
pleurae forming an angle at about its middle; length 6 mm., 
scutellifer 
Abdomen a little shorter than head and thorax united, the first seg- 
ment broad; episternal furrow of mesopleurae gently curved; length 
OES) SAITTN, «oa way cos) Rec Cate Menace oe stain oid cin aio diate a bei sete lentus 
Pronotum and scutellum yellow; apical margins of abdominal seg- 
ments! broadly. testacamusice cesses res aan cc ss widcdiaee cles impressifrons 
Moras totuimia ciated:  watievelloweruse.ct clea clats siejels « «ioiseloie *iviorere 17 
. Enclosure of propodeum very strongly marked, the impressed lines 
forming it more or less foveolate; length 7.5 mm........... stygius 
Enclosure of propodeum not strongly marked, rather indistinct, the 
379 
