PLATE LV. 



Fig. 



1 . Staurocephalus rubrovittatus, Grube, from Herm. Enlarged. 



2. Staurocephalus Kefersteini, McL, from North. Uist and Channel Islands. Enlarged. 



3. Lysidice punctata, Pisso, from Jersey. Enlarged. 



4. Glycera lapidum, De Quatref., from St. Andrews. Enlarged. 



5. Marphysa Belli, And. and Edw., from Plymouth. Enlarged. 



6. Eighth foot of the foregoing, x 25. 



7. Head and anterior region of Nematonereis, from Plymouth. Enlarged. 



8. Tip of the tail of the same. Enlarged. 



9. Head and anterior region of Ophryotrocha puerilis, Clap, and Meczn., from Plymouth, 



Enlarged. 



