HERMAPHRODITISM IN EURYCEA BISLINEATA. 



349 



Fig. i B shows that a separation posterior to the testicular part on 

 each side, such as, in fact, is slightly indicated in the right gonad, 

 would transform each ovo-testis into a distinct testis and ovary. 

 A female was found in which the ovary (Fig. 2) showed a num- 

 ber of separate parts or lobes, some connected with each other by 



m /- 



ms- 



FIG. 2. Camera lucida drawing of the ovaries o-f an adult female showing 

 an unusual lobed form (X 7). M, Miillerian duct; ins, mesonephros ; o, ova; 

 ol, detached lobe of oyary. 



the mesovarium and others quite distinct, serving to illustrate the 

 point that parts which are usually continuous may, through some 

 unknown cause, become thus carried apart. Jordan's distinction 

 in terminology seems, therefore, a somewhat arbitrary one, at 

 least as applied to our species, and thus any individual which 

 shows the presence of both male and female sex cells, even though 

 these appear side by side in the same gonad, is regarded in this 

 paper as a true hermaphrodite. 



Naturally the ultimate criterion of hermaphroditism should be 

 the production of functional germ cells of both sexes. Such a 



