March. .,.,., Alexander-Leonard: Variation in Cladura. 3, 



cross-vein as compared with the rarli.l .r Position of this 



1 . i- ^ vviLu uie raaial cross-vein in r^U P .-o 



tremely variable. In many win=s it is far Hi«t r \- ' 



others it is e.xactly underneath the r,^ ' '' '" ^'^^ '• '" 



specimens i, is far proxi^ f ^ "a f"""""" """ '" ^ ^"' 

 s.,per„n„.erary crosLein is J.„d J^,: :H:nr:;Z ^^f^ ,f,^ 



a part of the cell R ,u *' ^ '' ^P""' 'ra^-e^ing only 



Win. on.y, a supeltr^ rjei^^^lti ''"'^'■'" ^ ''''' 



n.edia„ cross-vein (Fig. 8). ' c„nce I t 1 1':^ :;T "^ I'' 

 sector (pra^furca of D.tP,. c i x , arcuation of the radial 



The jl ar^att^r o : rt*r:„;7:r'-^"^^'f '"'"■""■ 



is common a, in Kio- » a °" ^"'""^ arcnation 



common as n F,g. 8. An approach to the other extreme is seen in 

 F.g. 4 where the tendency of .l,e sector to be angular appea s a fe 



:::::„•'■';,:?? '"' ''-"''■' - -"-"-^rt 



.he sectorTboth wL'gs' ' " '''""'"' ^"'' '"^^ "« '-- "^ 



cell m'"'"", f '■■ ^'"' " '""^ ™"'»'"" '" "- -'ative length of 



rstira,:: ir;:';,?''' '-^ »--- - - -- «- this -s t.:' 



r/i/h^^Lr-— — -;--^ 



condit shown ,n Fig. 9 .here it is underneath the fork of MO 

 two specimens from Wooster, Ohio (Honser). one has a suner 

 ^nierary cross-vein proximad of the basa, deflection o C , F " 



eco: :f^;- '^^"--vei„ united caudad with .be' ILV 

 (Fig n). " ""' "P'"'^'' '° *°"" ^ ^--'"Ped figure 



The figures were all drawn to scale by means of the proiection 

 .-croscope in the entomological laboratory of Cornel, Unlvers^ and 



