PLATE D. 



with everted tube (after Dr. Moxon) 



ventral view .... 



side view .... 



head, ventral view 



head, closed, side view . 



dorsal \"iew .... 



ventral view, contracted 



nervous ganj^lion, lateral canals, and 



vibratile tags 



trophi 



young female, dorsal view 



male, dorsal view . 



hind extremity of male . 



ventral view .... 



head, dorsal view, showing ciliary 



wreath .... 

 male coming out of tube 

 male, side view 



male 



side view ; corona expanded . 



side view ; corona eonti'acted 



corona, side view, showing thickenings 



foot and sucker 



cloaca, and surrounding parts 



mastax, fi-ont view . 



mastax, side view . 



young female 



young male (?) 



male, dorsal view (after Dr. Colin) 



female, side view (after Prof. C. Semper) 



after Prof. Lcidv. 



lafter El. Mctscli- 

 / nikoff 



after Miss Foulke 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



