PLATE XLVIIL 
1. Dorsal view of the anterior region of Gruhianella antarctiea, some- 
what compressed by the tube from which it was removed. 
The left branchise are absent, .... Enlarged. 
2. Posterior end of the same species, .... Enlarged. 
3. Anterior region of Samythopsis gruheL From the dorsal aspect, . Enlarged. 
4. Lateral aspect of the anterior region of Eusamytlia paeifica, . Enlarged. 
5. Dorsal view of the anterior region of Melinna armandi, . . Enlarged. 
6. Anterior region of Melinna pacijica. From the dorsum, . Enlarged. 
7. Anterior view of the snout of Amphitrite kerguelensis, . . Enlarged. 
8. Lateral aspect of the anterior region of Lanassa hentha- 
liana, ..... Enlarged under a lens. 
9. Lateral view of the anterior end of Lecena antarctiea, . . Enlarged. 
10. Extremity of the tail of the foregoing, .... Enlarged. 
11. Lateral view of the anterior extremity of Pista corrientis. The 
specimen is injured. 
Enlaregd. 
