PLATE VII. 



Fig. 



1 . Borlasia Elizabethce, n. s. Enlarged. 



2. Body of the same species contracted into a firm mass. About the natural size. 



3. Micr ura purpurea, Dalyell. Enlarged. 



4. „ aurantiaca, Grube. Enlarged. 



5. Portion of the posterior end of Carinella annulata, showing the white specks which indicate 



the openings of the generative organs. 



6. Head of a southern variety (reddish) of Nemertes Neesii. 



