196 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [BuU. 



free ; cubito-anal cross-veins 3-5 ; anal loop with 2 rows of cells ; 

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

 triangle of the male with 3 cells ; thorax not uniform green ; abdo- 

 men with only one lateral ridge per segment; inferior anal 

 appendages of male entire. 



Very little is known of the habits of the genus, either adult or 

 nymph. Needham (1901) says of the one species heros: "Its 

 strikingly large size, and its habit of flying into houses not unfre- 

 quently, and its apparent migrations in numbers, have made it a 

 rather well known species." 



Epiaeschna heros (Fabricius) 



Supplementum Entomologiae Systematicae, 285 : 1798. 



N5miph. — Color dark brown. 



Head: granular above, the sides behind the eyes somewhat 

 angular; antennal segments 3, 5, and 6 equal in length and i, 2, 

 and 4 also equal ; labium extending to the middle coxae, the inner 

 margins of the labial palpi coarsely toothed (PI. vi. Fig. 2), much 

 more so than any other member of this family. 



Thorax: projections over the procoxae prominent; pronotum 

 granular. 



Abdomen: lateral spines prominent on segments 5 to 9 and a 

 dorsal ridge on segments 8 to 10; terminal appendages with the 

 superior and inferiors subequal, the lateral appendages about half 

 this length ; ovipositor of the female as long as segment 9. 



Measurements : total length, about 47 mm. ; abdomen, 30 mm. ; 

 hind femora, 7 mm.; wing-cases, lo-ii mm.; mentum, 8.5 mm, 

 long by 5.75 mm. wide at widest portion. 



Specimens in the Museum of Comparative Zoology examined. 



Adult, male. — Color brown, marked with green. 



Head : labium brown, green at sides ; clypeus green above, front 

 brown, with green ventral border and two green spots on dorsal 

 surface ; frontal vesicle bilobed, green between the lobes ; vertex 

 greenish yellow, rear of the head yellow below ; black above. 



Thorax: prothorax brown, meso- and metathorax brown and 

 green, the dorsal mesepisternal stripes pointed below, expanded 

 above, being i mm. wide at middle and 1.5 mm. at the upper end; 

 first lateral or epimeral green stripe 2 mm. wide in its ventral 

 half, somewhat narrower in its dorsal half, with a notch at middle 

 on the cephalic border, length 7 mm. ; metepimeral stripes 2 mm. 

 broad, the borders straight and parallel ; paraptera of metathorax 

 green, and a small green spot on metepi sternum just ventrad ; 

 mesoparaptera brown ; base of wings, meso- and metanota marked 

 with green ; legs black, the coxae and trochanters but little lighter ; 

 femora with double rows of short spines beneath; front tibiae 

 with about 12 flat scales in cephalic row, meso- and metatibiae with 

 12-14 setae in each of the two rows. Tarsi with distal segment 

 as long as the first two together ; wings. Fig. 39, slightly flaves- 



