No. 39] 



ODONATA OF CONNECTICUT: AESHNIDAE 



193 



Genus Nasiaeschna Selys 



Njmiphs. — Head with obtusely angulate caudo-lateral margins; 

 proximal segment of labial palpus truncate at apex; mental cleft 

 open ; lateral spines on segments 5-9, and dorsal hooks represented 

 on all segments but more prominent on segments 6-9. 



Adults. — Wings with cephalic section of arculus longer than 

 the caudal; M^ not making a sharp bend distad of stigma; Rs 



Fig. 38. Color pattern of abdomen and thorax of six species of Aeshna. 



forked and only one row of cells between it and the supplementary 

 sector ; triangle and supertriangle with cross-veins ; basilar space 

 free ; anal loop with about 7 cells ; cubito-anal cross-veins 3 ; 

 anal angle of hind wings dissimilar in the two sexes, the anal 

 triangle composed of 3 cells ; thorax not uniform green ; abdomen 

 with a single lateral ridge per segment; inferior appendage of 

 male entire. 



Adults of the only representative of the genus appear on the 



