Amphipoda and Isopoda 



219 



at once distinguish this species from all other Isopoda. The specimen 

 was caught in a closing-net lowered to 400 fathoms, at a depth of 

 over 1,000 fathoms, and the species is therefore presumably bathy- 

 pelagic in habitat. 



EXPLANATION OF THE PLATES. 



Plate IV. 



Anonyoc Wolfendeni, sp. nov. 



Pig. 1. — Posterior lateral angle of the third segment of the metasome. 

 „ 2. — Epistomal plate, with outline of the head to show amount of 

 projection. 



3. — Superior antenna. 



4. — Infei-ior antenna. 



5. — Oblique inside view of right mandible. 



6. — Mandibular palp. 



7. — First maxilla. 



8. — Second maxilla. 



9. — Maxillipede. 

 10. — First gnathopod. 

 11. — Second gnathopod. 

 12.— Fourth leg. 

 13. — Seventh leg. 

 14. — First uropod. 

 15. — Second uropod. 

 16. — Third uropod. 

 17.— Telson. 



Plate V. 



Xenurccga ptilocera, gen. et sp. nov. 



Fig. 1. — -Dorsal view of whole animal. 

 „ 2. — Peduncle of superior antenna. 

 „ 3. — Peduncle of inferior antenna. 

 „ 4. — First leg. 

 „ 5. — Fourth leg. 



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