PSILID/E are small orange and black flies, about % inch in length. 



DRYOMYZA. 



1. D. simplex. ,\ in. ; polished yellow ; wing tinged. 



AQROMYZA. Field Fly. 



i. A. tritici. Wheat Moss Fly. T V in. ; black. 



HYLEM1A. 



i. H. deceptiva. ^ in. ; The Sham Wheat Fly. Ash gray, with black legs ; chest witli three 

 and body with one spotted stripe ; front tawny yellow. 



OSCINIS. 



i. O. tibialix. l / 2 in.; black, legs yellow ; hind shanks banded. 



HELOMYZA. Saw Fly. 



I. //. quinque biiiictatu. } in.; yellowish brown ; body rust yellow, black side spots: wing five spotted. 



CHLOROPS. Qrccn=cyed Fly. \ 



1. C. vulgaris. ^ in. ; pale tawny yellow ; a black spot on head ; feeler black. 



2. C. antenna! is. Like lust, with pale variations ; feeler yellow. 



(58) 



