52 WESLEY R. COE. 



EXPLANATION OF PLATE II. 



FIG. 3. Planklonemertes agassizii Woodworth. Outline of body of mature 

 male with nine spermaries (sp) opening on the ventral surface on one side of the 

 body immediately back of the brain and eleven on the other side; r, rhynchodeum; 

 br, brain; In, lateral nerve; -frs, proboscis sheath. X 6. 



FIG. 4. Outline of body of female of same species, showing the ovaries (ov), 

 each with one or occasionally two large ova, situated beneath the lateral nerves on 

 each side of the body. X 6. 



