Explanation of Plate XVI. 



{Nereis). 



Fig. 1. Doisal view of proboscis of iVems wicWwzta Marenzeller. 8/1. 



Fig. 2. Yentral view of same. 8/1. 



Fig. 3. Posterior view of 40tli parapodium of the same species in 



atocoiTS phase. 31/1. 

 Fig. 4. Falcate bristle of same. 390/1. 

 Fig. 5. Posterior view of 40th parapodium of same in epitocons phase. 



22/1. 

 Fig. 6. Paddle-shapßd bristle of same. 320/1. 

 Fig. 7. Dorsal view of the anterior extremity of Nereis cidtrifera Gr. 



Avith protruded proboscis. 15/1. 

 Fig. 8. Ventral view of same. 15/1. 

 Fig. 9. Setose bristle of same. 390/1. 

 Fig. 10. Falcate bristle of same. 390/1. 

 Fig. 11. Parapodium of loth segment of the epitocons male of same. 



28/1. 

 Fig. 12. Parapodium of 40th segment of same. 28/1. 

 Fig. 13. Dorsal view of the posterior extremity of same. 15/1. 

 Fig. 14. Paddle-shaped bristle of same. 390/1. 

 Fig. 15. Anterior view of 23rd parapodium of Nereis cylinclrata Ehlers. 



31/1. 



