126 Bulletin Wisconsin Natural History Society. [Vol. 9, No. 3. 



Wings hyaline, fore wings without color, hind wings with brown 

 reaching the first antenodal in C and Sc. Brown at the intersections 

 of the arculus, at the ends of the triangles and anal veins. A large 

 blot in the lower anal triangle and the adjoining two series of veins. 



Male appendages in dorsal view like those of spinigera, that is 

 twice curved and with the tips approximated. In lateral view some- 

 what like cynosura, but with a longer, slightly produced angle, and 

 no lateral ridge. 



9. — Similar to the male. The vulvars like those' of spinigera. 

 Appendages somewhat stouter and longer. The wings with fuscous in 



Figure 6. — T. spinigera Selys. 



the anal field, usually only along the veins out to the level of the 

 triangle. 



Length of abdomen 30 to 34 mm., hind wing 30 to 33 mm. 



Described from the following materials : 



1. $ Solon Springs. Douglas Co., Wis., July 7-15, 1909; Mil- 



waukee Museum. 



2. $ Maine, June 10, 1898, Harvey ; coll. Williamson. 



3. 9 Same. 



4. 9 Detroit, Mich., Hubbard & Schwartz, U. S. N. M. 



Holotype male in collection Milwaukee Museum, allotype female 

 in collection Williamson, paratype male in collection Williamson, 

 paratype female U. S. N. M. 



