THE PARASITIC WASP, HADROBRACON BREVICORNIS. 



49 



showing that although his eyes were orange his gonads were 

 paternal in origin. 



From the foregoing data it is to be noted that, while black 

 females may be heterozygous and thus diploid for the orange 

 locus, males produce one type of sperm only, which may carry 

 either black or orange but not both. 



TABLE I. 



PROGENIES FROM BLACK MALES BY ORANGE FEMALES. 



When pairs of wasps are set together it often happens that the 

 female will refuse to mate and will kick the male away, bending 

 her abdomen down and forward. Her eggs then produce only 

 males as expected. The same male, set with another female or 

 with the same female at another time may succeed in siring 



