PLATE XCI. 



Fig. 



1. Girratulus tentaculatus, Montagu, from St. Andrews. Enlarged. 



2. Girratulus cirratus, 0. F. Miiller, from St. Andrews. Enlarged. 



3. Dodecaceria concharum, CErsted, from St. Andrews. Enlarged. 



4. Part of the middle region of Nereis Girratulus, Delle Chiaje, from St. Andrews. 



Enlarged. 



