PLATE XVIII. 



1. Notommata forcipata . 

 la. 



lb. 



2. Notommata naias . 

 2a. . 

 26. 



3. Pleurotrocha conetricta. 



3a. . . 



36. . . 



3c. . 



4. Pleurotrocha leptura 

 4. 



5. Pleurotrocha gibba 

 5a. 

 G. Proales decipiens . 

 Ga. ,, 



7. Proales sordida 

 7a, 76. . 



7c. . . . 



8. Proales gibba 



9. Proales petromyzon 

 9. 

 96. . 



9c. . . 



Qd. . 



10. Proales tigridia 



10a. 



11. Proales parasita 

 lla. 



12. Distemma labiatum 

 12a. 



13. Distemma Collinsii 



14. TriophthulinuB dorsualis (?) . 

 14*. 



15. Furcularia sequalis 

 15a. . 

 10. Furcularia longiseta 



16a. . . 



17. Proales felis .... 

 17a. . 

 176. 



dorsal view . 



side view . 



toes .... 



ventral view 



head ; dorsal view 



rnastax and trophi 



dorsal view . 



side view 



head ; ventral view 



foot and toes 



dorsal view . 



side view 



dorsal view . 



side view . 



dorsal view . 



side view . 



dorsal view . 



side views . 



trophi .... 



side view 



ventral view 



side view ; extended . 



side view ; contracted 



head, side view ; enlarged 



eye .... 



dorsal view . 



side view . 



side view 



mastax and trophi 



dorsal view . 



side view 



side view 



dorsal view . 



side view 



dorsal view . 



side view . 



dorsal view . 



side view 



dorsal view . 



side view . 



trophi .... 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



