380 



NORTH AMERICAN DIPTERA 



Helomyzidae I. — 1, Tephrochlamys borealis ; 2, Helomyza sp. ; 3, Eccoptomera simplex; 

 4, Criddleria hemiptera ; 5. Acantholeiia sp. ; 6, Tephrochlamys canescens ; 7, Neoleria leu- 

 costoma; 8, Pseudoleria pectinata; 9, Amoebaleria helvola; 10, fficothea fenestralis; 11, Pseu- 

 doleria pectinata; 12, AUophyla sp. 



