June, 1919 Bulletin of the Brooklyn Entomological Society 85 
rounded tubercles; male genital segment broadly rounded, a 
notch between it and posterior edge of sixth segment, another 
notch on edge of sixth segment just inside tubercle. In females 
‘the sixth segment is almost completely divided by a triangular 
notch for the reception of the genital segment, which is acute 
posteriorly; there are two triangular processes on each side 
between apex of genital segment and tubercle of sixth segment, 
the inner larger and belonging to the genital segment, the outer 
smaller, rounded, belonging to the sixth segment and scarcely ex- 
tending caudad of tubercle. \ 
Key TO THE SPECIES. 
A. Thorax more or less emarginate on each side. 
B. Thorax di€tinctly narrower across anterior than across posterior 
angles (1% to 4 less). 
C. Posterior lobe and humeral region of thorax rather swollen; 
dorsal carinz inconspicuous; third antennal joint in pro- 
portion to fourth as 8 is to 7; reticulated area distad of 
posterior arm of brachial vein (and bordering mem- 
brane), with a distinctly scalloped margin, decurrent 
farthest along third membranal vein (extension of cu- 
DUETUS()} 2 op Acte hale ye see ee shale Patetense vet mer ev eratene patruela n. sp. 
CC. Posterior lobe of thorax not unusually elevated; dorsal carinz 
distinct; third antennal joint long both absolutely, and 
relative to fourth joint, proportions 8-10: 6-7; reticulated 
area distad of posterior arm of brachial vein of nearly 
uniform width where traversed by second to fourth mem- 
branal veins, the edge nearly straight........ cinerea Say.. 
BB. Thorax nearly as wide across anterior as across posterior angles 
(445 to Ye less) ; third joint of antenna short, both abso- 
lutely, and relative to fourth joint, proportions 6-7: 5-6. 
D. Dorsal carinz of thorax very distinct, elevated, more or less 
tortuous; an intercalated carina behind each callosity 
being more or less evident. 
E. Brachial area distinctly larger than cubital, the latter 
with not more than three series of punctures, 
brachialis n. sp. 
EE. Brachial area not larger than cubital, the latter with four 
Or more series of punctures. 
F. More closely punctured, number of punctures along 
inner apical border of cubital area 7-8, 
ceramica n. Sp. 
