PLATE VIII. 



FIG. i. Emphctonema burgeri. Outline of stylet apparatus (X35) Glacier 

 Bay. 



2. Amphiporus bimaculatus. Middle portion of proboscis, with four 

 pouches of accessory stylets ( X 35 ) Glacier Bay. 



3. Emplectonema gracile. Stylet apparatus of proboscis (XS)- Popof 

 Island. 



4. Amphiporus tigrinus. Middle region of proboscis (X^o)- Farragut 

 Bay. The deeply stained wreath of glands is indicated only in section. 



5. Zygonemertes albida. Middle portion of proboscis ( X 4) Victoria, 

 B. C. 



6. Amphiporus nebulosus. Outline of stylet apparatus of proboscis (X 5). 

 Kukak Bay. 



7. Paranemertes cornea. Side view of head, with partially everted probos- 

 cis. The position of the lateral oblique furrows, and the arrangement 

 of the ocelli are indicated ( X 5)- Taku Harbor. 



(100) 



