PLATE LIV. 
Fig. 1. Anterior ventral aspect of Dasychone capensis, 
Enlarged. 
Fig. 2. Dorsal view of Protula capensis, . 
Enlarged. 
Fig. 3. Protula americana, and tube, 
Enlarged. 
Fig. 4. Apomatus elisabethce. From the lateral aspect, 
Enlarged. 
Fig. 5. Tube of Serpula narconensis^ 
Slightly enlarged. 
Fig. 6. Tube of Ditrypa arietina, 
Enlarged. 
Fig. 7. Tube of Serpula philippensis. 
Enlarged. 
