HERMAPIIRODITISM IN EURYCEA BISLINEATA. 



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roditic gonads of a 42.4 mm. animal in the advanced meta- 

 morphic stage. The gonads are essentially male so far as general 

 shape and slight characteristic pigmentation are concerned, and 

 there are visible in them ten unmistakable ova. Figs. 5 A and 5 C 

 represent the gonads of a typical male and female collected on the 



ms- 



w 



~ms 



ms 



FIG. 5. Camera lucida drawings of the ventral view of gonads of (A) an 

 incipient metamorphic male, length 40.9 mm. ; (B) an advanced metamorphic 

 hermaphrodite, length 42.4 mm. ; and (C) a premetamorphic female, length 

 40.2 mm. (X 15). Fa, fat bodies ; ins, mesonephros ; o, ova; tl, testicular 



lobules; tp testicular pigment; w, Wolffian duct. The levels of the sections 

 ' 



of the gonads shown in Fig. 6 are indicated by the lines 1-2. 



same date and of approximately the same size and stage of de- 

 velopment, which may be used for comparison. As noted before, 

 the smaller size of the hermaphroditic gonad, and of the ova pres- 

 ent in it, is obvious. 



Cross sections 10 micra thick were made through all three pairs 

 of gonads and were stained, some with Delafield haematoxylin, 



