PLATE XVIII. 



Lumhricillus annulatus sp. nov. 

 Fig. I. Section through the penial bulb. 



Enchytrceus kincaidi sp. nov. 



2. Testis and sperm-sac, the latter projecting into somite x. 



3. Nephridium. It is composed of at least 30 cells. 



4. Sexual bulbs with their papillse, from longitudinal section of the body. 

 The smaller complex is the anterior one. 



Etichytrcetis tnctlakatlensis sp. nov. 



5. Nephridium. 



Enchytrcsus saxicola sp. nov. 



6. Nephridium. 



(162) 



