ADDITIONAL MINNESOTA DIPTERA. 



79 



Fig. 64.— Apple tree in breeding cage in Insectary. 



of two layers of hollow tile with a i-inch space between, and 

 7-8 inch of cement plaster over tile on outside and inside of 



wall. 



The building taken as a whole is well worth the amount 

 appropriated, and bids fair to be of much usefulness. 



ADDITIONAL MINNESOTA DIPTERA. 



The following new species of Minnesota flies have been 

 secured since the report for 1905 (Diptera of Minnesota) was 

 issued. The identification has been made in part by Mr. 

 Coquillet. The different families are arranged alphabetically 

 for convenience of reference. 



AGROMYZIDAE. 



Desmometopa m-nigrum, Zett. ; D. latipes,^ Meig. ; 

 Agromyza aeneoventris, Fall.; Ceratomyza dorsalis, Loew; 

 Olfersia americana, Leach. 



