PLATE XLV. 
Fig. 1. Anterior end of Bushiella ahyssorum. The snout is seen from the 
dorsum, the rest is partly turned round so as to present a 
lateral view. The specimen is somewhat softened, . . Enlarged. 
Fig. 2. Anterior nervous ganglia of the foregoing. The bifid region em- 
braces the snout, . . . . . . X 12. 
Fig. 3. Dorsal surface of the anterior region of Brada wliiteavesii, . x 1 2. 
Fig. 4. Ventral surface of the same region, . . . . x 12. 
Fig. 5. Dorsal view of the head and anterior region of Scolecolepis cirrata, 
var., from Sombrero and St. Thomas, . . . x 12. 
Fig. 6. Ventral surface of the same, . . . . . x 12. 
Fig. 7. First (left) branchial process of Prionospio capensis. Somewhat 
compressed, . . . . . . x 24. 
Fig. 8. Dorsal view of the anterior region of Chcetozone atlantica, . Enlarged. 
Fig. 9. Tip of the tail of Phyllochcetopterus claparedii. Viewed from the 
ventral surface, . . . . . . Enlarged. 
Fig. 10. Tube of the foregoing species. The dark shading inferiorly indicates 
the muddy deposits at the bottom, while 10a is an outline 
of the diaphragm, ..... About natural size. 
Fig. 11. A tube of the same species in which repair has occurred, the former 
torn end projecting to the right as a broad spur, . . Natural size. 
Fig. 12. Whorled tube occurring with the foregoing, . . Slightly enlarged. 
Fig. 13. Lateral view of three segments of Dasyhranchus sp., from Yedo, 
Japan, ....... Enlarged. 
Fig. 14. Ventral view of three segments of the same, . . . Enlarged. 
