PLATE XIX. 



Enchytrceus metlakatlensis sp. nov. 



FIG. i. Longitudinal section of penial glands and papillae. The sperm-ducts 

 open between the two glandular accumulations. 



Enchytrceus modes tus sp. nov. 



2. Nephrostome of a nephridium, higher magnification than fig. 3. 



3. Nephridium. 



Enchytrceus alaskce sp. nov. 



4. Cross-section of body just behind the male-pores, showing the 

 sexual papillae on both sides of the ventral ganglion. In sections 

 more forward the male-pores would lie in line with the points 

 marked x. The dorsal vessel although rising in xv has not yet 

 separated itself from the intestine. 



5. Nephridium. The anterior part of the main body is strongly 

 granular. 



6. Longitudinal section of the ventral part of the body wall passing 

 through the penial papillae. There are eight or nine bunches of 

 glands opening on the surface of the body. The penial papilla lies 

 to the right of this papilla. 



(164) 



