217 



[ S didder • 



laminate, the lower edge with a small basal exterior tooth, beyond the 

 middle a prominent tubercle, and between them the interior edge pro- 

 duced to a rather large rounded himeUa, more prominent toward the 

 base ; inferior appendage triangular, bhmtly pointed, the edge of the 

 under surface raised on the basal half, curved upwards, the tip minutely 

 uncinate above and reaching fully the tubercle of the superior pair. 

 8 antecubitals ; 8-9 postcubitals, two rows of discoidal areolets. 



Length 1.90 ; alar expanse 2.60; pterostigma .09 ; superior abdominal 

 appendages .14. IS. July 26. The Glen, AVhite Mts. 



Cordulia ShurtleflBi nov. sp. 



$ Vertex and front, except sides and lower edge, bronze-green, as 

 in life, the latter edge with reddish-brown ; vertex with a purplish 

 lustre, as in life ; occiput as in life, indistinct bronze-green, with a slight 

 purplish lustre ; sides and lower edge of front and the epistoma dark oliv- 

 aceous (in life dark reddish-brown) ; rhinarium pale ; labrum black ; la- 

 bium light brownish-yellow as in life ; eyes in life bright gi'ass-green, red- 

 dish-brown at the tubercle : thorax brassv-o;reen with a ferruo-inous tino-e 

 below and on mesothorax (as in life), black next the base of the femora, 

 covered with grey pile longest on front of dorsum ; wings hyaline, ful- 

 vous at the extreme base ; pterostigma brownish-ferruginous ; mem- 

 branule dark brown, white at base ; legs black, unguiculi reddish- 

 brown with an interior tooth just beyond the middle ; abdomen very 

 dark brassy-green almost black ; the sides of segment 2 below the au- 

 ricle, but not extending on to the genital lobe, reddish-brown ; and 

 above on either side an indistinct roundish spot of same color as in 

 life ; incisure between segments 2 and 3 reddish-brown, luteous in life ; 

 abdomen swollen at the base, segment 3 constricted, 4 with the 

 sides equal, 5-7 with apex slightly broader than base, 8 equal, 9-10 

 with base slightly broader than apex, the 10th carinated ; appendages 

 black, superior pair short, cylindrical, nearly straight, slightly kneed 

 outwards at the extreme base, curved slightly outwards at the apex, 

 which is rounded, an internal sharp tooth and a minute infero-exter- 

 nal one at the base, and a small inferior one in the middle, ciliated 

 with long hairs interiorly ; inferior apixmdage deeply cleft, the branches 

 sub-compressed, vertically bifid, the apices pointed. 8 antecubitals ; 

 7-8 postcubitals, two rows of discoidal areolets. 



Length 1.75-1.85; alar expanse 2.4-2.48 ; pterostigma .09 in.; up- 

 per appendages .09 in. 2 5. Hermit Lake, August 11, 25. 



Cordiilia Walshii nov. sp. 



6 Vertex and occiput dark, sometimes a little brassy, brown (in 

 life yellowish-brown); epistoma, sides and lower border of front dark, 

 dull yellowish-brown (in life yellowish-brown); rhinarium and labium 



