THE CANADIAN ENTOMOLOGIST 



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7. • Number of irregular postcubital cells just beyond nodus; i.e., 

 those formed by the apparent prolongation of the subcosta. 



8. Number of cells in the anal loop. 



9. Number of cells covered by pterostigma. 



10. Maximum number of rows of cells between Rs and Rspl. 



11. Maximum number of rows of cells Ijfetween Ms and Mspl. 



12. Position of origin of Mia in relation to first postcubital cells. 



13. Position of fork of Rs in relation to first postcubital cells. 

 The results from 7, 9, 10, 11 and 12 were negative. Those of 



the other numbers are given in the following table: — 



