XEW YORK STATE MUSEUM 



a little over one half its tength; that of the second about three 

 fourths its length, the cell being decidedly wider than the anterior 

 one. Posterior cross vein less than its own length from the 

 median cross vein. Halteres pale straw yellow. 



Fig-. 113 Posterior extremity of S. liudsoni 



A second male bred Aug. 5. differs in description in having the 

 prothorax darker with lateral dark spots on the scutellum. jet 

 black ones on the base of the wings; a broad, irregular, marginal 

 white stripe anteriorly. Pleura also whitish with irregular, jet 

 black spots. The anterior tarsi are somewhat darker than the 

 tibiae. 



Female. Antennae pale straw yellow, verticillate with a num- 

 ber of stout bristles arising from the base of each segment; basal 



