Explanation of Plate XIX, 



{Nereis). 



Fig. 1. Dorsal view of anterior extremity of Nereis ijimai. n. sp. 3/1. 



Fig. 2. Ventral view of proboscis of same. 3/1. 



Fig. 3. Dorsal „ „ 



Fig. 4. Posterior view of 5th parapodinm of same, 5/1. 



Fig. 5. „ „ „ 30th „ „ „ 



Fig. 6. „ „ „ 80th „ „ „ 



Fia-. 7. 179th 



Fig. 8. Paddle-shaped bristle of the same species. 390/1. 



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



Fig. 10. Dorsal view of anterior extremity of Nereis shishidoi. u. sp. 



3/1. 



Fig. 11. Ventral view of same. 3/1. 



Fig. 12. Anterior view of 1st parapodiiim of the same species. 5/1. 



Fig. 13. Anterior vieM' of ICth parapodium of the same „ 5/1. 



Fig. 14. „ „ „ 30th „ „ „ 



Fig. 15. „ ,, ,, 50th „ „ „ 



Fig. 16. Setose bristle of the same species. 390/1. 



Fig. 17. Falcate „ „ „ „ 



Fig. 18. Another form of falcate bristle of the same species. 390/1. 



