648 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull 



Hind Wings 



Veins 

 Costal 

 Subcostal 

 Median 

 Anal 

 Radian or Marginal 



Cubital 



Discoidal 



Transverse median 

 cubital 

 Axillary 



Cells 

 Costal 

 Median 

 Submedian 

 Anal 



Marginal or radial . 

 Submarginal or cubital 

 1st discoidal . 

 2d " 



Veins 

 Costa or C 

 R + M 

 Cu and M* 



1st A; at tip 1st A and 2d A 

 R s (at its tip) 



m-cu and R 4+ 6+Mi 



m and M 2 



M s 



Free part of media or M 



3d A 



Cells 



C + Sc + Sci 



M 



Cu + Cui + Ms 



1st A + 2d A 4- 3d A* 



Ri 4-2 



R + R. + R, + R, 



Mi + 1st M 2 + M 



2d M, 



student of this superfamily will, however, do well to examine the 

 work of Fox, and especially his revisions or specific synop- 

 ses which occur in the various American journals. In some cases 

 where Fox has carefully tabulated the American species of certain 

 genera belonging to this superfamily, the species occurring or 

 likely to occur in the State of Connecticut have been extracted 

 from his table, and nearly all the characters mentioned by Fox 

 have been incorporated within the table. This is especially true 

 in the subfamily Crabroninas, and, by running an insect to any 

 given species in the keys here given and by following closely the 

 characters there given, it is believed that one can feel reasonably 

 sure that he has correctly determined his species. In cases where 

 Fox has not tabulated the American species, the author has made 

 entirely new keys, and this is also the case in certain groups 

 where, according to his ideas, Fox's arrangements are not the best. 

 The following keys to the subfamilies are based upon char- 

 acters found chiefly in the thorax, as it is believed that there is 

 less modification, by variation of the parts used, in this part of the 



3d A is part below axillary vein. 



