122 



Journal New York Entomological Society. ^^'°^- xxviii. 



male narrow and rounded at apex, valve moderately long and ex- 

 panded at base ; uncus lanceolate with the slender point upturned and 

 attaining the apex of the valve. Last ventral segment of the female 

 with a narrow subacute incision reaching nearly to its base. " Color 

 black ; supra antennal plates, a small dot at the base of the vertex con- 



\J 



SH 



Neoplatypebia ampliata 



tinned as a median line on the pronotum which does not reach the 

 hind margin, narrow hind edge of the pronotum, sides of the meso- 

 notal X posteriorly, elytral nervures except close to their base, de- 

 pressed sides of the pronotum and legs in part, pale." Length i6 

 mm., expanse 38 mm. The species was " described from one male 

 without locality, in the collection of the University of California, and 

 two females from Mary's River, Oregon, received from Dr. Wilson." 

 Mr. Van Duzee has kindly sent me the male holotype for examination, 

 and it is figured on the accompanying plate. It is immature which 

 accounts for the costal nervure being so flattened out in mounting; 

 usually it is stiff er and less pliable. The membranes at base of fore 

 wings are white. 



The following specimens have been examined:- 



Oregon. — Mary's River, female, collection Oregon Agricultural 

 College. In this individual the notch in the last ventral segment is 

 a ■' subacute incision " and narrower than in the twenty females of 

 coiistricta examined from Arizona. It expands 38 mm. ; membranes 

 at base of fore wings yellowish white; fore femora black except at 

 extremities. 



California. — Contra Costa Co., May 6, 1918, male. The genitalia 

 of this specimen have been drawn by Mr. C. E. Olsen. The mem- 



