REHX AND HEBARD 27 



B. Ovipositor less than half as long as the caudal femur. 



C. Ovipositor not deeper at some point distad of base than at base. 

 (Lateral lobes of pronotum narrow.) agile (DeGeer) 



CC. Ovipositor deeper at some point distad of base than at base. 

 D. Ovipositor with general form less arcuate. 



E. Lateral lobes of pronotum broader, ventral portion of 

 caudal margin of same consideral:)ly arcuate, convex cal- 

 losity very broad. glaberrimum (Burmeister) 

 EE. Lateral lobes of pronotum naiTower, ventral portion of 

 caudal margin of same little arcuate, convex callosity com- 

 paratively narrower. concinnum Scudder (Part) 

 DD. Ovipositor with general form more arcuate. 



E. Fastigium more robust. Caudal margin of lateral lobes 

 of pronotum with deeply impressed humeral sinus. Ventro- 

 external margin of caudal femora generally unspined. 



vulgare Harris 

 EE. Fastigium less robust. Caudal margin of lateral lobes 

 of pronotum with but sUght indication of humeral sinus. 

 Ventro-external margin of caudal femora always spined. 



calcaratum new species 

 BB. Ovipositor more than half as long as the caudal femur. 

 C. Ovipositor strongly falcate. 



D. Caudal margin of latetal lobes of pronotum sinuate or sub- 

 sinuate ventrad of humeral sinus. 



E. Ventro-cephaUc angle of lateral lobes little indicated. 



Ventro-external margin of caudal femora generally uiLspined. 



Tibiae not blackish. bullatum new species 



EE. Ventro-cephalic angle of lateral lobes more pronounced. 



Ventro-external margin of caudal femora spined. Tibiae 



blackish. nigripes Scudder 



DD. Caudal margin of lateral lobes of pronotum gently arcuate 



ventrad of humeral sinus. (Ventro-external margin of caudal 



femora with 2 to 8 spines.) laticauda Rcdtenbacher 



C. Ovipositor gently arcuate, never falcate in degi-ee of curvature. 



D. Lateral lobes of pronotum deeper than greatest breadth. 



Humeral sinus moderately indicated. 



concmniun Scudder (Part) 

 DD. Lateral lobes of pronotum broader than deep. Humeral 

 sinus of average (minor) or decided {fidicinium) indication. 



E. Ovipositor proportionately deeper, dorsal line straighter. 

 Tegmen more coriaceous. (Coloration variegated.) 



minor Bruner 

 EE. Ovipositor proportionately shallower, dorsal line more 

 arcuate. Tegmen more vitreous. (Coloration more uni- 

 form.) fidicinium Rehn and Hebard 



TRANS. AM. ENT. SOC, XLI. 



