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



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

 cross-vein lo 



8. Front wings with medio-cubital cross-vein and M3+4 parallel 



Blennocampin^ p. 142 

 Front wings with medio-cubital cross-vein and M3+4 strongly- 

 divergent behind 9 



9. Hind wings with vein Ra reaching the margin distinctly 



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



SCOLIONEURIN^ p. I58 



Hind wings with vein R3 reaching the margin at or beyond 



apex of wing; cell Rm rounded at apex and open 



Fenusin^ 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 



DlNEURIN^E p. 107 



11. Front wings with medio-cubital cross-vein and vein M3+4 



parallel or at least not divergent behind 12 



Front wings with medio-cubital cross-vein and vein M3+4 

 strongly divergent behind HoPLOCAMPiNiE p. 105 



12. Antennse 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.i: p. 80 



Antennas 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 wings 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 



Antennas always with more than nine segments; hind wings 

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

 broad at apex and open Monoctenin^ p. 108 



15. Antennas always with nine segments Nematin,e p. hi 



Antennae with three or six segments 16 



