PLATE LIL 
Fig. 1. Neottis antarctica. A portion of the tube — composed of Sali- 
cornaria, shells, and other organisms — covers the median 
region, ....... 
Fig. 2. Dorsal aspect of the anterior region of Sabella zehuensis. The 
branchiae are softened, ■ . 
Fig. 3. Dorsal view of the anterior region of Sabella fusca, 
Fig. 4. Anterior dorsal region of Sabella bipunctata, 
Fig. 5. Anterior dorsal region of Dasychone orientalis removed from its 
tube, 
Enlarged. 
Enlarged. 
Enlarged. 
Enlarged. 
Enlarged. 
