PLATE XCV. 



Fig. 



1. Cephalic region of Ophelia limacina, H. Rathke. Enlarged. 



la. Lateral view of the same with the proboscis (a) extruded. Enlarged. 



lb. Dorsal view of the posterior end. Enlarged. 



1c. Ventral view of the same. Enlarged. 



Id. Lateral aspect of the caudal region. Enlarged. 



2. Lateral view of young Ophelia limacina, about half an inch in length. Enlarged. 

 2a. Tip of the caudal region. Enlarged. 



3. Lateral view of Ammotrypane aidogaster, H. Rathke. Slightly enlarged. 



3a. Cephalic region with the nuchal organs, and anterior segments from the dorsum. 



Enlarged. 

 3b. Lateral aspect of the caudal region. Enlarged. 

 3c. Ventral view of the same in a specimen from Finmark. Enlarged. 

 od. Foot of the foregoing, with bristles and branchial cirrus. Enlarged. 



4. Dorsal view of Ammotrypane cylindricaudatus, Hansen. Enlarged. 

 4a. Caudal process. Enlarged. 



5. Lateral view of Armandiella Robertianae, McL, from the Sound of Harris. Enlarged. 



6. Eumenia Jeffreysii, McL, dredged off Balta. Slightly enlarged. 



6a. Lateral view of a few segments from the middle. The ventral surface is on the 

 left. Enlarged. 



7. Enlarged view of the anterior end of Travisia Forbesii, Johnston. 

 la. Tip of the tail similarly enlarged. 



lb and 7c. Front and lateral views of the glands of the skin of a variety from Greenland. 

 The latter (1c) is in section. Magnified. 



8. Travisia Gravieri, McL Enlarged. 



9. Outline of the posterior end of Ephesia gracilis, H. Rathke. Enlarged. 



10. Ventro-lateral view of Arenicola ecaudata, Johnston, with fche proboscis extruded. 



Enlarged. 

 10a. Anterior end of another example more highly magnified. 



11. 11a, and 11/;. Various aspects of the papillse on the skin of Stylarioides plumosa, 0. F. 



Midler, x 100 diam. 



12. Lateral view of Brada villosa, H. Rathke. Enlarged. 



13. Anterior foot of Eumenia crassa, (Ersted. Enlarged. 

 13a. Twentieth foot. Enlarged. 



