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



Female. — Plates of vulvar lamina separated by a broad quad- 

 rangular excavation. 



Measurements : total length, male 35, female 34 mm. ; length 

 of abdomen, male 23, female 23 mm. ; length of hind wings, male 

 26-27, female 26 mm. ; width of hind wings, male 8.5, female 

 8 mm. 



A male in collection of Connecticut Agricultural Experiment 

 Station without label, and one in Yale University collection from 

 Norway. Maine, collected by S. I. Smith. 



New England. — May 19-August 14. 



Leucorrhinia hudsonica (Selys) 



Revue des Odonates ou Libellules d'Europe, 53 : 1850. 



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



Head : face including labrum, clypeus and front (except a dark 

 preocellar line) pure white; vertex black, dark brown in front; 

 occiput and postgenae black or dark brown ; labium dark, with a 

 pale spot on each side. 



Thorax : very dark brown with obscure black marks ; legs 

 black ; hind wings with the dark spot not reaching distad to the 

 triangle. 



Abdomen : dorsum of terga 4, 5, 6 and 7 with pale triangles 

 (red to yellow) ; occasionally a small spot on 8; sides of 2 and 

 two-thirds of 3 yellow ; anal appendages with about 5 small teeth 

 on ventral surface of the superiors. 



Female. — Vulvar lamina long, in contact on the mesal margins 

 for more than half their length, their tips extending almost to the 

 small knobs on the ventral surface of segment 9 nearly one-third 

 the length of the ninth sternum. 



Measurements : total length, male 32, female 27 mm. ; length of 

 abdomen, male 20, female 18 mm. ; length of hind wings, male 

 21-23, female 22 mm.; width of hind wings, male 7.5, female 

 7.5 mm. 



Specimens examined in the collection of Dr. P. P. Calvert. 



Leucorrhinia intacta Hagen 



Sj'Hopsis of the Neuroptera of North America, 179: i86r. 



Nymph. — Head: labium (PI. vii, Fig. 6; Fig. 7, No. 8) with 

 10 lateral setae on the palpi and a minute one at base; 14 mental 

 setae ; antennae 7-segmented, the sixth segment longest. 



Thorax : femora each with two faint rings of brown, the hind 

 femora reaching abdominal segment 6 in exuviae ; hind wings 

 extending to segment 5. 



Abdomen: prominent dorsal hooks on segments 2 to 8 inclu- 

 sive ; lateral spines on segments 8 and 9 ; the dorsal hook on 



