PLATE V. 



FigS. 1-4. IOLANTHK ACASTHOXOTUS. 



Fig. 1. Maxilla of first pair. 



Fig. 2. Antenna. 



Fig. 3. Extremity of antennule, to show sensory hairs. 



Fig. 4. Maxilla of second pair. 



Figs. 5-8. Ianthopsis bovallii 

 Fig. 5. Extremity of one of the thoracic limbs. 

 Fig. 6. First pair of abdominal limbs, from above. 

 Fig. 7. First pair of abdominal limbs, from below. 

 Fig. 8. Uropod. 



Figs. 9-19. Astrurus crucicauda. 

 Fig. 9. Male, from above. 

 Fig. 10. Antennule. 

 Fig. 11. Basal joints of antenna. 

 Fig. 12. Maxillipede. 



Fig. 13. Processes on inner side of maxillipede ; more highly magnified. 

 Fig. 14. One of the first pair of thoracic appendages. 

 Fig. 15. Distal extremity of one of the succeeding thoracic limbs. 

 Fig. 16. Uropod. 



Fig. 17. Extremity of uropod ; more highly magnified and divested of hairs. 

 Fig. 18. Extremity of abdominal shield. 

 Fig. 19. Toothed spines from maxilla. 



