Vicinity of Mazon Creek, Illinois. 



305 



Anal area limited, comparatively slender and filled by a moder- 

 ate number of sinuate veins. Cross veins oblique in the costal 

 area, stretched and diffuse in the other areas. Posterior wing 

 similar to the anterior, but provided with a large folded anal 

 lobe. Prothorax elongated. Head apparently with progna- 

 thous mouth parts. Legs homonomous, moderately long. 



Fig. 8. 



Fig. 8. Spaniodera longicollis. x 1 "8. 



Spauioclera longicollis, new species. Fig. 8. 



Prothorax very slender, 10 mm long. Anterior wing 34 mm . 

 Very similar to 8. ambulans Handlirsch, from which it may 

 be distinguished by the longer neck and by some details in the 

 wing venation. Apex of the wings broadly rounded ; space 

 between the radius and its sector moderately narrow ; sector 

 cleft into 3 branches ; media forked very near the base, its 



