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



the margins nearly parallel ; black stripes of the mesopleural suture 

 widest adjacent to the katepisterna and a little contracted just 

 cephalad of the wing bases ; remainder of the thorax blue, except 

 small spots on the metapleural sutures adjacent to the wing bases : 

 legs blue, including coxae and trochanters, the dorsum of the 

 femora black, the tibiae with a black stripe on each which includes 

 the cephalo-ventral row of setae; tarsi and claws pale, darker at 

 tips: wings with 11-13 postnodals in the front wing and M^ aris- 

 ing between 5 and 6 ; there are three cross-veins between M^ and 

 Cuj, proximad of the nodus, and this species differs in this respect 

 from all other Enallagmas. 



Abdomen : blue and black ; dorsum of tergum i black at base ; 

 terga 2 black above, 3, 4, and 5 with an apical ring and spot, the 

 spot on each extending cephalad and contracted to a line on the 

 meson ; a little more than half the dorsum of 6, and all of 7 except 

 a basal ring, black; terga 8, 9 and 10 blue except the dorsum of 

 10, which is black; superior anal appendages (Fig. 10, No. 18) 

 blunt, shorter than the inferiors, with short dorso-lateral tubercles 

 and a pale rounded tubercle on the ventro-mesal angles ; inferiors 

 blue with black tips, the tips slender and acute. 



Female. — Color darker than the male. 



Head and thorax similar to the male, but the abdomen differs 

 in having the dorsum of terga 1-8 with black from bases to apices ; 

 terminal segments obscurely marked in some specimens. Meso- 

 stigmal plates as in Fig. 11, No. 7. 



Measurements: length, male 38, female 38 mm.; length of 

 abdomen, male 30, female 29 mm. ; length of hind wings, male 

 20-21. female 22 mm.; width of hind wing, male 4-4-5. female 

 4.5 mm. 



Connecticut.— Woodmont, 23 July, 1904; Branford, 2q July, 1904 

 (P. L. B.); North Haven, 10 August, 1921 (W. E. B.) (P. G.) ; New 

 London, 7-15 June, 1921 (R. H. H.). 



New England. — July 23-August 25. 



Group 6 



Enallagma aspersum (Hagen) 



Synopsis of the Neuroptera of North America, 97: 1861. 



Nymph. — Unknown. 



Adult, male. — Color blue and black. 



Head : blue and black ; antennae black ; postclypeus black, the 

 cephalic margin sometimes blue; anteclypeus and labrum brown 

 or buff and blue, the front blue above the clypeus to the base of 

 the antennae; remainder of the front and vertex black; post- 

 ocular spots blue, the blue connected with the blue of the occiput 

 and postgenae. 



Thorax: blue and black; pronotum black except the narrow 



