122 



SEX INHERITANCE 



c'-)l 



striped 



#i. 



\-A fe.-:- 





^ir^n 





gynandromorph plain 



Fig. 361. — Caterpillars of silkworm moth. The gynandromorph is 

 a hybrid between the striped and plain races. (After Toyama.) 



in the moth Abraxas, and has observed that each 

 nucleus is fertihzed by a single spermatozoon. 



In the famous Eugster hive of bees studied by 

 von Sieboldt large numbers of gynanders were 

 found. A similar case is recorded by Engelhardt, 

 and more recent cases by Sheppard. The ex- 

 planation of these cases is less certain than those 



