Smithsonian Report, 1920— Hyman. 



Plate 4. 



19. Antennule, fifth Zoea. 



20. Antennule, megalops. 



21. Antenna, fifth Zoea. 



22. Antenna, megalops. 



23. Mandible, megalops. 



24. First maxilliped, megalops. 

 2.3. Second maxilliped, megalops. 

 2ti. Third maxilliped, megalops. 



27. Pleopod, megalops. 



28. Endopodite of pleopod. highly magnified. 

 2 ). Telson, megalops. 



