236 NEW YORK STATE MUSEUM 
1898 Lestes inequalis Davis, N. Y. Ent. Soc. Jour. 6:196 (listed 
from Staten Island) 
1898 Lestes inequalis Kellicott, Odon. Ohio, p.21, fig.22 
1900 Lestes inequalis Williamson, Dragon Flies Ind. p.260, pl.7, 
fig.6 
This species is as yet known only from Staten Island, but is 
very likely to be found elsewhere. Its nymph is unknown. 
Subfamily aGRIONINAE 
KEY TO GENERA 
Imagos 
a@ Spines on the tibiae very long, twice as long as 
the intervals between them............. Argia 
aa Spines of the tibiae hardly longer than the inter- 
vals between them 
b No pale postocular spots on the top of the head; 
sexes similarly colored 
ce Colors of dorsum blue and black; yellow 
beneath the thorax.) ai<cc.cems eee Chromagriorn 
ce Colors of dorsum red and black; stout species Amphiagrion 
ccc Dorsum bronzy green; slender species........ Nehallennia 
bb With round or ovoid postocular spots on the 
head 
d Sexes with a general similarity in color, the 
female often of a lighter shade; no up- 
turned, bifid process arising from the 
apex of the 10th abdominal segment 
(except in the species last in our list); 
the superior abdominal appendages of 
the male not strongly directed downward 
HOG “TN WAT. eschew cleus ews eee ee Enallagmea@ 
dd Sexes strikingly unlike in color; a bifid pro- ; 
cess arising from the apical margin of 
the 10th abdominal segment in the male 
and the superior abdominal appendages 
strongly directed downward and inward 
e Males chiefly green and black, with nor- 
, mal rhomboidal pterostigma; females 
with the orange of the abdomen cover- 
ing something less than the three basal 
Segments (becoming wholly densely 
pruinose with age). i): iets fens on ee Ischnura 
ee Males yellow or orange, with ovoid 
stigma which does not reach the costal 
vein; females with the four basal seg- 
ments of the abdomen yellow or orange.Anomalagrio ba 
