PLATE VII. 



Fig. 1. Zygonemertes thalassina. Outline of stylet apparatus of proboscis 

 ( X 50). la, i5, several accessory stylets from two individuals (X 225). 

 Sitka. 



2. Amfhiporus angulatus. Central portion of proboscis (X40)' 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, vi^ith 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 (X40). 

 Yakutat. 



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

 accessory stylet pouches ( X^o). Victoria, B. C. 



7. Paranemertes peregrina. Outline of middle portion of proboscis 

 (X50). Virgin Bay. 



(98) 



