fig, S3 



Flg. Si 



Text-fig. 20. — Sychesia naias, dorsal view. 



„ „ 21. — ,, ,, , ventral view of clasper. 



,, ,, 22. — „ ,, , lateral view of processes P 1 and P 2 . 



„ „ 23. — „ „ , anal view of process P 1 . 



