No. 39] ODONATA OF CONNECTICUT: LIBELLULIDAE 293 



Adults 



Males and Females 



I. Both sexes with a conspicuous brown spot in the anal angle of 

 the hind wings ; stigma of the front wings more than 3 mm. 



long hymenea 



No conspicuous brown spot in the anal angle of the hind wings, 

 the color diffused over the width of the wing ; stigma of the 

 front wings 2.5 mm. long flavescens 



Pantala flavescens (Fabricius) 



Supplementum Entomologiae Systematicae, 285 : 1798. 



Nymph. — Head large as in Tramea, antennae weak, 2.5 mm. 

 long, and composed of 6 segments ; teeth of the mesal margin of 

 tlie palpi fully as long as high, movable spine heavy, not setiform, 

 scarcely longer than the teeth. 



Thorax : femora slender, ridged, not compressed ; tips of hind 

 femora extending to abdominal segment 5, the wing-cases also to 

 segment 5. 



Abdomen : smooth, with long lateral spines on segments 8 and 

 9, those on 8 about as long as segment 9 ; terminal appendages 

 long and slender, the laterals about three-fourths as long as the 

 ventrals ; ventral surface of abdomen not greatly depressed along 

 the two longitudinal lines in the specimens examined. 



Measurements : total length, 24-26 mm. ; length of abdomen, 

 15 mm. ; length of hind femora, 7 mm. ; wing-cases, 6 mm. ; width 

 of abdomen, 8 mm. 



Specimens examined in the Museum of Comparative Zoology. 



Adult, male. — Color green or brown and yellow. 



Head: face including labrum, clypeus and front yellow, often 

 with a reddish spot at middle ; vertex yellow ; rear of head brown 

 and yellow. 



Thorax : green to yellow with white pilosity, brown above ; 

 pronotum entire ; coxae pale ; femora pale above, tibiae sometimes 

 lined with yellow; wings clear (PI. xv. Fig. i), the anal angle 

 chlorinated (clear yellow) ; stigma yellow or brown; tips of wings 

 sometimes with a brown spot. 



Abdomen : greenish or yellowish, conspicuous for its transverse 

 carinae ; tergum 2 with two carina ; 3 and 4 with three ; 5 with one 

 at middle and another at caudal margin ; dorsum of terga 4-8 

 inclusive with a faint brown spot, having lateral arms behind the 

 middle of each spot ; tergum 9 with a subcircular spot ; dorsum 

 of 10 black; sides of terga 2, 3 and 4, with short, bent, sometimes 

 interrupted dashes, 5-8 with dark dashes or spots below the lateral 

 carinae; anal appendages with superiors yellow at bases, darker 

 at tips, with a weak, obtuse ventral angle a little beyond the middle ; 

 and with a row of small teeth proximad of the angle. 



Female. — Color similar to the male ; the shoulders of mes- and 



