1912] Eastern Species of Cerceris 13 
10. 
11. 
12. 
13. 
14, 
15. 
16. 
le 
18. 
19. 
23. 
24. 
Maceuswhollymeye lowe pate ee ci Secs let leis plee cesses finitima 
Face with a large black spot each side between clypeus and base of the 
AML ALT Clit) OS fey amen eee ee NAY. ceEN coy. hoe PSPs, oe oLois le wjco eteha-e) a's finitima nigroris 
A yellow band or spots on the vertex; scutellum, post-scutellum, and the 
metanotum with yellow; legs almost wholly yellow; enclosure mostly 
SUMO Uy MA veins soMern pod oo abu b ulood en BS thero el deel cel enAterIE ee tic Ae ae ae enn 10 
INotspots mon bandlomiienventexsts: 2 feos d= tees eb Gini cot claves oe ee ewe es 11 
First segment mostly yellow, second segment yellow on base; vertex with a 
band; antennz short; hair-lobes on clypeus very broad, not their breadth 
APALG ChyPeusy URUNCA Le mimi OMe iy ter yey ae) a cvefechs tei) Clepei morata 
First segment mostly black, second segment with yellow band on apical half; 
antenne normal; hair-lobes of clypeus very narrow, about twice their 
breadth apart, clypeus produced in middle below................. zelica 
No band on the second segment of abdomen, which is wholly black; a band 
On inst segment; no marks) on! postseutellum: 7. 25-7--55.0....-¢:. insolita 
Mpandsonnyellowson Second Sesmentynr ner aor aariase ee oe ci mete ee aes: 12 
A tooth or ridge each side on mesoternum; antennz situated high above 
clypeus, the last joint thick; bands on abdomen subequal in width...... 13 
Nett herCooLhenon mG eon mlesOstem umes rere nti ciecideclscias ¢ - 15 
Spine pointed downward, rather slender; no metanotal stripes, hind femora 
lollarelle so oat e.g. ioeue a oe eI Se ees ic cr dietns Gece kee ane ea compar 
Spine directed backward, rather the tip of a raised ridge................. 14 
No metanotal stripes; hind femora with two black stripes.......... jucunda 
Metanotal stripes present, hind femora mostly yellowish. ..jucunda carolina 
HindiiemorasblackwexceptatucbipS: 4.0 eho ratte omci ca a aie.. o soci = sian 16 
indstemora+palewexcepts ait, DASC.4. rer et ae eye patentee clas oe slates ae 17 
Post-scutellum yellow, enclosed area partly yellow; abdomen mostly reddish; 
stripes on metanotum; head reddish; large species................. ampla 
Post-scutellum black; antennez situated high above clypeus; stigma dark; 
Smallgcoanselya pul ctabLerSPECleS).a-) Senco ae cei ae ae aera kennicotti 
Scutellum and also post-scutellum spotted; last joint of antenne thick, barely 
longersuhanmpnecedineuy Outs. oo vacates ine ota rs eee h see oe has oe 18 
Post-scutellum black; stigma yellowish; clypeus roundedly produced below, 
terminal joint of antenne longer than preceding, and concave within at 
(6I1)O) 7 so Bets san ect ee eC em ech ere nee robertsoni 
Stigma dark; venter black; no band on basal segment; clypeus acutely pro- 
ducedpbelowsink the: middle =) sa. .a,.5se00 ae ae es cs ee compacta 
Stigma yellowish; venter ferruginous; first segment of abdomen often reddish. 
mimica 
Enclosure irregularly transversely rugose, or obliquely striate on sides, 
Glypeusuconvex= belowammemrddlles 9 sep eee Skee ce taco eles - clymen 
Enclosure more or less smooth or longitudinally striate.................. 20 
Enclosure broad, nearly wholly smooth; lateral spots on first segment of 
A ONGIOVIAVET Olan 5S msctesle ets GS es ate we LE REN SESA ORO ES eae ie 10 cP cee an Ee 21 
Hnclosunemnorenom less mlamlyestratess-c45.5s.-c05ees- eee e nese nae sn. 22 
Clypeus swollen out transversely above middle.................... fasciola 
ClypeusmeventlypmtaimblyeiCOmvexen. seiie seu: ase te os esis asa ss ce alaope 
Clypeus flat, broadly truncate in front, with a transverse depression before 
tip; face only slightly hairy; first segment of abdomen with spots; enclosure 
finely striate; last ventral segment only slightly emarginate at tip.deserta 
Clypeus convex, rather rounded below, no transverse impression......... 23 
Enclosure with prominent median groove, first segment of abdomen much 
broader than long, unspotted, body rather finely punctate..... chryssipe 
Enclosure without prominent median groove; first segment of abdomen 
hardivsbrodder: thanks lompysmemes tase tc ae ces = oss ib ee Steen Aa orks 24 
Rarely spots on first segment; enclosure striate all over, last ventral plate 
HGOHOAIHS” GNC. “TOW ésoruln B. vie tt nig cB R bah Ein G:C RTO OIE RIOR UREeI OL cue) Hie Car Ree EE ae 25 
Spots on first segment; enclosure striate only on sides; venter spotted. 
prominens 
Spots on first segment; ornaments white; enclosure striate all over; venter 
Wivdelon JleKrsey Spoons) (one ISG Ks IS} Ayo Ayn coe cro ae RIRIIG Rie Cie ein ani mee nigrescens. 
