PLATE CXIII.
Fig. 1. Lateral view of Melinna pahnata, Grube. Enlarged,
2. Amphitrite scyUa, Savigny, from Plymouth. Enlarged.
3. Leprea lapidaria, L., from the ventral surface. Enlarged.
3 a. The same viewed laterally. Enlarged.
4. Pelagic young of Terebella. First stages X 50.
4 a. Pelagic young of Terebella. Second stage. -|gj: 50.
45. Pelagic young of Terebella. Third stage. X 50.
5. Ventral aspect of the collar-region of Bispira volutacornis, Montagu. Enlarged.
6. Portion of sand-tube of young Lagis Koreni, Malmgren, continuous with the larval
transparent sheath. Observed and photographed by Mr. Arnold Watson.
Magnified. (Vide p..55.)
