ANGER0XA PRUNARIA. 217 



of it. In Angerona prunaria, the abdomen was 

 dried up in consequence of the specimen having 

 been long preserved, so that it was impossible to 

 determine whether the peculiarity extended to the 

 internal organization. In a specimen of Melitaa 

 didymus, however, which admitted of dissection, the 

 male organs were found complete and in their usual 

 condition, and there was an ovary placed on the 

 left side, having no connexion with any other or- 

 gan. Another kind of Gynandromorphism is called 

 superimposed^ the sexual characters not being dis- 

 posed transversely but according to the longitudinal 

 axis of the body, whence two combinations result, 

 the male parts being anterior, and the female pos- 

 terior, or vice versa ; this is of rare occurrence, and 

 has been noticed only in a kind of ichneumon. 

 Crossed Gynandromorphism, is when each side of 

 the body presents at the same time the characters of 

 the two sexes. This combination is rare, although 

 much less so than the preceding. It has been ob- 

 served in .a Bomhyx castrensis, in which the left 

 antennas and the right wings were female, the right 

 antennae and left wings male.* 



* Lacordaire, Intro, a TEntom., vol. ii. p. 434. 



