78 Clarence E. Mickel 
Males 6, females 2: Imperial (1) and Glen (7); June 22 to 
August 22. 
Mellinus rufinodus Cresson. 
1865. Mellinus rufinodus Cresson, Proc. Ent. Soc. Phil., 1V, p. 475. 
1894. Mellinus rufinodus Fox, Ent. News, V, p. 201. 
Females 1: West Point, September, 1887. 
SPHECINAE 
KEY TO THE TRIBES 
1. Second and third cubital cells each receiving a recurrent vein; propo- 
deum with a U-shaped area on dorsal surface .............. Chlorionini 
Second cubital cell receiving both recurrent veins .............000- 2 
2. Propodeum without a U-shaped dorsal area ...............5. Sphecini 
Propodeum with a U-shaped dorsal area ................ Sceliphronint 
CHLORIONINI 
Chlorion LePeletier 
KEY TO THE SPECIES 
I. Second cubital cell of fore wing higher than broad ............... 2 
Second cubital cell of fore wings as broad or broader than high... 8 
2. Glawe with one. tooth 5008. is jee ete ee cyaneum aerarium 
Claws with ‘two; or amore téelli is Ya 2 ose eet ec cclse tame eae 3 
3. Claws with two teeth; clypeus with a median truncated lobe and a 
sinus on each side; abdomen black or at most only faintly brownish 
GE MESEAIO INS qa oie sik rome’ SRR Sa ci ae laeviventris 
Claws with three to six teeth; clypeus without a median truncated lobe 
but often with a median emargination or notch .............0.. 4 
A. Apdomen black, of darks browitlesce estes cteiae + memes cee atratum 
Abdomen with some ferruginous or yellow color, at least ventrally: 5 
Gs He miales: occ see's vs iw cisaae arsine hes eatin eee ole ere ast ee teen 6 
Malesia tice uk teenie names apr. Mg aie elute) Muli clare tei thed one Bvanel actos eae eee 7 
6. Size larger, abdomen more red; thorax with short dense pubescence; 
tubercles: pubescent. 0 Asa riutenecs sole © ee cies ee eles eLearn thomae 
Size smaller, abdomen usually more black; thorax with pubescence 
longer and more sparse; tubercles usually not pubescent, 
bifoveolatum 
7. Sixth abdominal tergite not’ broadly excavated ............... thomae 
Sixth abdominal tergite broadly excavated on its posterior margin, 
bifoveolatum 
8. Stigmatal groove rudimentary On absent t=. cee eiaaie eerie 9 
396 
