106 NEUROPTER A OF NORTH AMERICA. 



apex ; appendages pale; vulvar lamina triangular, the apex bifid ; 

 wings hyaline, pterostigma narrow, longer, yellow. Female. 



Twelve antecubitals ; ten postcubitals ; two discoidal areolets. 



Length 58 millim. Alar expanse 76 rnillim. Pterostigma 5 

 millim. 



Hob. Georgia (Abbot). 



17. G. pilipes ! 



Gomphus pilipes Selys ! Monog. Gompli. 148, 48 ; pi. viii, fig. 7. Selys ! 

 Addit. Synops. 15, 40 bis. 



Testaceous ; head pale ; thorax villous, olivaceous, dorsum each 

 side, with an obsolete fuscous line ; feet testaceous, femora villous, 

 above, and tibiae beneath, blackish-brown ; abdomen long, the 

 ninth segment longer than the others, the apex hardly dilated ; 

 testaceous, the middle segments at the apex, and the basal seg- 

 ments each side, with an obsolete fuscous fascia ; appendages pale, 

 the superior ones trigonal, the apex acute, curved inwards ; the 

 inferior ones broadly bifurcated ; vulvar lamina oblong, bifid at 

 the apex ; wings hyaline, pterostigma narrow, yellow ; twelve an- 

 tecubitals ; eleven postcubitals ; 3 discoidal areolets. 



Length 53 millim. Alar expanse 68 millim. Pterostigma 4 

 millim. 



Hob. New Orleans ; Georgia. 



18. G. lividus ! 



Gomphus lividus Selys ! Monog. Gomph. 150, 49 ; pi. ix, fig. 1. Selys ! 

 Synops. 34, 42. Gomphus sordidus Hag.! Selys, Synops. 35, 43. 



Olivaceous, spotted with fuscous ; head pale yellow ; thorax oli- 

 vaceous, the dorsum with a stripe upon the middle, each side a 

 broad, fuscous one, divided with olive ; the sides with two broad, 

 fuscous lines ; feet testaceous, tibioe beneath and the tarsi, black ; 

 abdomen equal, the base dilated, fuscous, a dorsal, medial, yellow 

 line, interrupted upon the segments, and absent from the apex ; 

 appendages fuscous, the superior ones trigonal, narrower at the 

 apex, acute, somewhat dilated in the middle; the inferior one 

 broadly bifid ; wings hyaline, pterostigma small, yellow ; twelve 

 antecubitals ; twelve postcubitals ; two discoidal areolets. 



Length 51 millim. Alar expanse 66 millim. Pterostigma 3 

 millim. 



ffab. S. Carolina (Zimmerman); Washington (Osten Sacken). 



