PLATE XLL 
Fig. 1. Tube of Nothria macrohranchiata, strengthened with the linear 
leaves of a pine, and with the animal projecting an- 
teriorly, ...... About natural size. 
Fig. 2. Head and anterior region of the foregoing, . . . Enlarged. 
Fig. 3. Fortieth foot of the same, irregularly contracted in the preparation, x 18. 
Fig. 4. Tube of Nothria willemoesii, .... Slightly enlarged. 
Fig. 5. Spine from the foregoing (tube), ..... Enlarged. 
Fig. 6. Portion of a spine from the same tube, . . . . x 80. 
Fig. 7. Head and anterior dorsal region of the same species, the palpi 
being somewhat flattened, ..... Enlarged. 
Fig. 8. Tenth foot of the same, . . . . . . x 18. 
Fig. 9. Fiftieth foot of the foregoing, with a parasitic Loxosoma on the 
left, . . . . . . . X 18. 
Fig. 10. Separate branchia of the same species with parasitic Loxosomce, . x 25. 
Fig. 11. Head and anterior region of arma?^c?^, . . . Enlarged. 
Fig. 12. Eleventh foot of the same, . . . . . x 40. 
Fig. 13. Twenty -first foot of the foregoing, .... x 40. 
