26 EARTHWORMS AND THEIR ALLIES [ch. 



are apt to be very large and conspicuous. They are 

 also generally unpaired, a character which is however 

 not confined to the Eudrilidae ; for there are Mega- 







m 



L 



$ 



Fig. 10. Ventral view of Poly tor eutus Jinni, head end ( x 2), 



lettering as in fig. 9. 



scolecids, such as Fletclierodrilus, and Geoscolecids 

 in which the same unpaired character occurs. The 

 principal feature of the family is that the ovaries are 



