74 
6. 
10. 
it. 
12. 
13. 
14. 
a5) 
16. 
17. 
18. 
Clarence E. Mickel 
Propodeum with an enclosed space; wings except apical margin hya- 
line; posterior tarsi whitish medially; mesonotum shining. .clavatum 
Propodeum without an enclosed space; upper surface of propodeum 
FUSOSes IMEsSONOtIM HOpPAague elastance ee eee oe frigidum 
* Propodetim apunctunedin. eo erm aie hese see ieiearereetcnios Reece rubrocinctum 
Propodeum: moreson Jessistriated sass ecient etter eerie 8 
. Front with a strong projection; anterior half of clypeus strongly cari- 
Hated > Gch Skee aspire serene mae ica a eet tridentatum 
Front with a longitudinal carina above the antennae .............. 9 
. Antennae entirely black; second abdominal segment only red, 
rufozonale 
Antennae, except apical portion, reddish fulvous; first abdominal seg- 
ment more or less, and second entirely red; thorax black, with 
golden? pubescencese. wrest acsee cena then aa ears a ae eee texense 
Abdomen with base of second and third abdominal segments reddish 
Palwous.c0 5 iewbs 2a odio. os oe laste rae Sener hee johnsoni 
Abdomen entirely black; upper surface of propodeum with a raised 
disk which) 1s) transversely, striated =.>-. aucck oem este tie aie fastigium 
Propodeum trisulcate; upper surface of propodeum with a raised disk 
wihich 1S stranswersely: Stetated), vn. e see see tacit aie a iene fastigium 
Propodeum: notutrsulcate:-... a... 2 aea« cocuionine: seein ne Osteen 1 
Abdomen ventirely: blacke. {She 4 dotucce esis ens ae ee eT 1 
Abdomen: banded with reddish aac ceeenis soe teeter eee 16 
Propodeum punctured or very finely striated »..../...5...-0+.0e- 14 
Propodeum: sttiatedforeriieOSe e... snes cence oeecies bie ete 15 
First sternite with a strong hook or spine; thorax with black pile, 
politum 
First sternite unarmed; thorax with pale pubescense ...... albipilosum 
Posterior trochanters armed with a spine; mesonotum shining, 
clavatum 
Posterior trochanters unarmed; mesonotum opaque ......... frigidum 
Posteriot, trochanters unarmed aa).a: sme onic seeie eens ioe ee 17 
Posterior trochanters, armed! swithiva: Spinew ness anes cerlereete cies creas 18 
Propodeum punctate; base of second segment reddish...rubrocinctum 
Propodeum striated; with two strong projections at the apex, 
tridentatum 
Antennae entirely black; legs black, the hind tarsi whitish medially, 
rufozonale 
Antennae more or less reddish; thorax black with golden pubescence; 
legs rreddashy 2. os. % cnste’s perce te 9 akon dparstata cto fe fe nte a teaforate seach arre Ret texense 
Trypoxylon politum Say. 
1837. Tryvpoxylon politus Say, Bost. Journ. Nat. Hist., I, Pt. 4, p. 373. 
1883. Trypoxylon neglectum Kohl, Verh. zool. bot. Ges. Wien., 
XXXIII, p. 340. 
392 
