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



Anax Junius (Drury) 



Illustrations of Natural History — Exotic Insects i : pi. 47, f . 5 : 1773. 

 Nymph (PI. in, Fig. 5). — Color green, or brown, the young 

 nymph with a darker transverse band across the abdomen. 



Head: labium (Pi. vi, Fig. 7) gradually contracted caudad and 

 extending between the middle coxae or beyond ; labial palpi with 

 sharp proximal segment ; dorsum of head flattened, antennae with 

 the third segment longest, fourth shortest, the others subequal ; 

 sides of labruni and caudo-lateral surfaces of the head granular. 

 Thorax: pronotum without strongly projecting lateral angles, 

 wing-cases extending to or nearly to the fifth abdominal segment 

 in the full-grown nymph ; venation of the adult clearly indicated 

 in older nymphs which affords a means of separating it from the 

 nymphs of Aeshna. 



Abdomen : lateral spines on segments 7 to 9, the anal append- 

 ages about as long as the last two segments in mature specimens ; 

 segments 4 to 9 with a glabrous figure 8 scar shortly above the 

 lateral keels ; ovipositor of the female about two-thirds the length 

 of segment 9 ; proximal segment of the dorsal anal appendage of 

 the male bluntly excavated at tip. 



Measurements ; exuviae : total length, 50-64 mm. ; length of 

 abdomen, 29-35 mm.; hind femora, 11-12 mm.; median lobe of 

 labium, 9.5-13 mm. long. 



Adult, male. — Color green and brown. 



Head : labium, labrum, clypeus and front, except the dorsal 

 surface, yellowish green ; the dorsal surface of the front with a 

 black, egg-shaped, central spot surrounded by a pale yellow semi- 

 circle, and a black or brownish semicircle outside the yellow; 

 median ocellus very large, above which is a transverse ridge with 

 a lateral ocellus at either end ; occiput and postgenae mostly pale, 

 yellow but dark just below the dorsal margins of the compound 

 eyes. 



Thorax: prothorax brown, meso- and metathorax mostly pale 

 green ; sclerites divided by distinct lines or spurious sutures ; the 

 katepisterna and the areas surrounding the coxae brownish ; legs 

 brown to black; coxae, trochanters, and sometimes the femora 

 brown ; front femora yellowish below, and the trochanters with a 

 small glabrous area on the ventral surface; tarsal claws with 

 ventral tooth proximad of the middle; wings clear (PI. ix. Fig. 

 2) with a decided brownish or yellowish tinge in most specimens; 

 vein M2 has a sharp bend at the distal end of the stigma, supple- 

 mentary sectors present between Rs and M3 and between M4 

 and Cu^. 



Abdomen : first two segments bulbous, the diameter of the fol- 

 lowing segments reduced to one-half or one-third that of the first 

 two; segments i and 2 and part of 3 green or bluish, remainder 

 of abdomen brown, blue on sides ; terga 4-7 each with two longi- 



