40 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



pale ; anteclypeus pale, labruni with a transverse black stripe on 

 the dorsal margin, the remainder yellow ; exposed portion of the 

 mandibles, their trochantins, genae, and front above the clypeus 

 to bases of the antennae yellow ; remainder of front dark ; post- 

 ocular spots very small, nearly circular, and not connected with the 

 postocellar stripe ; occiput and postgenae mostly yellow. 



Thorax : dark metallic green and yellow ; pronotum dark, the 

 cephalic lobe lined with yellow and the caudal lobe with three 

 yellow spots ; mesepisterna dark with a narrow greenish line 

 above the mesopleural suture ; dorsal half of the katepisterna and 

 the epimera dark; metathorax and ventral surface of the thorax 

 pale yellow ; legs yellow with a short dark dash on each femur 

 near the apex ; tibiae mostly pale ; tarsi and claws pale, darker 

 at tips ; wings delicate, postnodal cross-veins 5-9 in the front 

 wings, and 4-6 in the hind ; stigma of the front wing ovoid and 

 remote from the margin but connected with it by a cross-vein. 



Abdomen : yellow or orange, and black, with black longitudinal 

 bands on terga 1-3 and 7, those on 3 and 6 being reduced to basal 

 and apical spots; terga 8-10 yellow; tenth tergum with a long 

 process bifid at tip, and about as long as the segment itself. Anal 

 appendages (Fig. 10, No. 20) small, the superiors bifurcate, each 

 with a broad rounded mesal lobe and slender lateral one; infe- 

 riors conical, slightly longer than the superiors. 



Female. — Color orange and black or dark brown. 



Head : differing from the male in having the black of the post- 

 clypeus reduced to a dorsal line and that of the labrum to lateral 

 spots ; postocular spots wanting ; occiput and postgenae pale. 



Thorax : dorsal black stripe covering half of each episterna ; 

 mesopleural suture with a pale line, remainder of thorax orange 

 or buff. Wings with stigma in contact with the margin. 



Abdomen : orange with narrow basal black rings on terga 2-4 

 inclusive; a longitudinal dark stripe on the caudal three-fourths 

 of 5, similar stripes extending the full length of 6, 7 and 8; tenth 

 tergum with a short blunt projection; ovipositor extending beyond 

 the anal appendages. 



Measurements : total length, male 23-24, female 24 mm. ; length 

 of abdomen, male 17-19, female 19 mm.; length of hind wings, 

 male 10, female 14 mm.; width of hind wings, male 2, female 

 2-2.5 ^'''"^^• 



Connecticut. — East Haven, 29 July, 1921 (B. H. W.) ; Branford, 11 

 August, 1921 (P. G.). 



New England. — June 22-August 20. 



Genus Ischnura Charpentier 



Nymphs. — Head with rounded caudo-lateral angles, the labium 

 with mental setae ; abdomen with spinulose lateral keels ; gills 

 less than half as broad as long, with or without cuticular pigment, 



