PLATE VII. 



Fig. i. Zygonemertes thalassina. Outline of stylet apparatus of proboscis 

 ( X 50). ia, lb, several accessory stylets from two individuals (X 225). 

 Sitka. 



2. Amphiporus angulatus. Central portion of proboscis (X4)- Taku 

 Harbor. 2a, central stylet and basis of another specimen (X 80). 



3. Paranemertes pallida. Outline of middle region of proboscis ( X 60). 



4. P. carnea. Extremity of everted proboscis, with six pouches of acces- 

 sory stylets, of which but four are shown ( X 35)- Sitka. 



5. Amphiporus exilis. Middle portion of proboscis, indicating, besides 

 central stylet and basis, eight pouches of accessory stylets (X4)- 

 Yakutat. 



6. Amphiporus leuciodus. Stylet apparatus of proboscis showing the three 

 accessory stylet pouches ( X 60). Victoria, B. C. 



7. Paranetnertes peregrina. Outline of middle portion of proboscis 

 (X5)- Virgin Bay. 



(98) 



