42 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



from media always one-half or more the length of the 

 cross-vein lo 



8. Front wings with medio-cubital cross-vein and M»+4 parallel 



Blennocampin^ p. 142 

 Front wings with medio-cubital cross-vein and M»+4 strongly- 

 divergent behind 9 



9. Hind wings with vein R» reaching the margin distinctly 



before apex of wing; cell R1+2 pointed at apex and closed 



ScOLIONEURINyE p. I58 



Hind wings with vein Rs reaching the margin at or beyond 



apex of wing; cell R1+2 rounded at apex and open 



FENUSIN.E p. 156 



10. Front wings with base of third anal vein present and second 



anal cell therefore not combined with third 11 



Front wings with base of third anal vein atrophied and 



second and third anal cells therefore united 



D1NEURIN.E p. 107 



11. Front wings with medio-cubital cross-vein and vein M»+* 



parallel or at least not divergent behind 12 



Front wings with medio-cubital cross-vein and vein M»+* 

 strongly divergent behind Hoplocampin^ p. 105 



12. Antennae with eight or nine segments, rarely enlarged at 



apex; front wings with first abscissa of M subequal to 

 abscissa of R; radio-medial cross-vein rarely if ever want- 

 ing Tenthredinin^ p. 80 



Antennae with less than eight segments, always enlarged at 

 apex into a club; front wings with first abscissa of M 

 twice as long as abscissa of R; radio-medial cross-vein 

 always wanting '. Cimbicin^ p. 102 



13. Front wmgs with third and combined first and second anal 



veins anastomosed at middle for a short distance, length 

 of anastomosis always being less than length of second 



anal cell 14 



Front wings with third and combined first and second anal 

 veins anastomosed at middle for a considerable distance, 

 anastomosis being two or three times the length of second 

 anal cell, or with second anal cell wanting or combined 

 with third anal cell, or with both first and second anal cells 

 wanting 15 



14. Antennae never with more than nine segments; hind wings 



with vein Rs reaching the margin before apex of wing; 



cell Ri+2 pointed at apex and closed Cladiin;e p. 108 



Antennae always with more than nine segments; hind wings 

 with vein Rs reaching the margin at apex of wing; cell Ri+» 

 broad at apex and open MoNOCTENiNiE p. 108 



15. Antennae always with nine segments Nematin^e p. hi 



Antennae with three or six segments 16 



