ASSOCIATION OF CHROMOSOMES IX DIPTERA 

 chari.es w. metz 



PLATE 8 



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•% Sl^ '50 151 ' 152 



t48 ^ ,49 *• 



^Oc 



i53 



154 



158 99 !55 W 



'56 ^ 157 159 ^ J60 W 





< 



16! '62 



164 



J66 



(/ 



S% 



166 167 



^ J 



169 



f68 



170 



171 



279 



