90 MR. GEOFFREY WATKIN SMITH ON THE 



EXPLANATION OP THE PLATES. 

 Plate 12. 



Fig. 1. Phreatoicus australis (Chilton). 



2. Lateral view of telson and uropod, P. australis, from the Great Lake. 



3. Uropod of P. australis from Ben Lomond. 



4. Uropod of P. australis from Mt. Wellington. 



5. Phreatoicus brevicaudatus , sp. n. 



6. Lateral view of telson and uropod, P. brevicaudatus. 



7. Phreatoicus spinosus, sp. n. 



8. Lateral view of telson and uropod, P. spinosus. 



9. Second antenna of P. australis. 



10. Ditto of P. brevicaudatus. 



1 1 . Ditto of P. spinosus. 



12. Alimentary canal of Phreatoicopsis terricola (Spencer). Diagrammatic transverse section. 



13. Anterior part of alimentary canal of above, opened to show structure of stomach and 



typhlosole. 



Plate 13. 



All figures of Neoniphargus yuli, sp. n. 



Fig. 1. The animal in lateral view. 



2. First antenna. Sec.app., secondary appendage. 



3. Second antenna. 



4. Right mandible. 



5. Left first maxilla. 



6. Palp of right first maxilla. 



7. Second maxilla. 



8. Maxillipede. 



9. First gnathopod. 



10. Third pereiopod. 



11. Terminal claw of first pereiopod. 



12. Second uropod. 



13. Third uropod. 



14. Telson. 



Plate 14. 



Fig. 1. First antenna of Neoniphargus exiguus. 



2. Third uropod of ditto. 



3. Telson of ditto. 



4. Terminal joint of 3rd pereiopod of ditto. 



5. First antenna of N. tasmanicus. 



6. Third uropod of ditto. 



7. Telson of ditto. 



8. Terminal joint of 3rd pereiopod of ditto. 



9. First antenna of N. wellingtoni. 



