PLATE L, 
Fig, 1, Tube of Terehella {Lanice) Jlabellum, with its finely branched 
anterior end. It is attached to a Terehratula from 150 
fathoms, off Prince Edward Island, . , . Somewhat enlarged. 
Fig. 2. The anterior region of Eupista darwini. From the dorsal aspect. 
The specimen was removed from a tube, and is softened, . Enlarged. 
Fig. 3. Ventral aspect of the same region of the foregoing, . . Enlarged. 
Fig. 4. Tube of Euthelepus setubalensis, mostly composed of sponge- 
spicules, Enlarged. 
