J. CHESTKR BRADLEY. 



105 



For convenience I give below the terms used by Cresson in his 

 Synopsis of the North American Hymenoptera and their corres- 

 ponding designation in this paper CFigs. 67 and 69). 



VEINS. 

 Costa = C. 



Subcosta = Sc + R + M. 

 Marginal or radial vein = r, Rs, R3 14 a.nd R3. 

 1st transverse cubitus = r-m and Rg. 

 2d transverse cubitus = R5. 

 3d transverse cubitus = R4. 

 Basal vein = M and m-cu. 

 Cubitus = M, Mi+2, R5 + Ml and R4-^5 + Mi. 

 1st recurrent vein = M3+4. 

 2d recurrent vein = Mg. 

 Discoidal vein = M3 and M4. 

 Subdiscoidal vein = m and M2. 

 Externo-medial vein ^ Cu and Cu2. 

 Transverso-medlal vein = M4 + t'^i. 



Anal vein = 1st + 2d + 3dA, Cua + 1st + 2d + 3dA, M.i + 

 Cui+2 4- 1st + 2d + 3d A, and M3 ,4 +Cu 1 ,2 + l^t + 2d + 3dA. 



CELLS. 



Costal = C. 



Stigma := Sc2. 



Marginal or radial = 2dRi -f" R2. 



1st subniarginal or cubital = R + IstRi. 



2d " " " = Rs. 



3d " " " = R4. 



4th " " " = R3. 



Median or externo-medial = M. 



1st discoidal = M.i. 



2d " = M:i. 



3d " = 1st M2. 



1st apical = 2dM2. 



2d " = Ml. 



Submedian or externo-medial = Cu + Cui. 



Anal = 3d A. 



TRANS. AM. ENT. SOC. XXXIV. (14) APRIL. 1908. 



