634 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 39. 



EXPLANATION OF THE PLATES. 



Plate 65. 



Male and female of Midias lohodes. 



Fig. 1. Dorsal view of female. 



2. Dorsal view of male. 



3. Second antenna and maxillary hook. 



4. First maxilla of female. 



5. First maxilla of male. 



6. Furca. 



7. Second maxilla 



8. Maxilliped. 



9 to 12. First, second, third, and fourth swimming legs. 



Plate 66. 

 Male and female of Paralebion elongatus. 



Fig. 13. Dorsal view of female. 



14. Dorsal view of male. 



15. First and second antennae, maxillary hooks, first maxillae, and mouth-tube. 



16. Furca. 



17. Maxilliped. 



18 to 21. First, second, third, and fourth swimming legs. 



Plate 67. 

 Female of Achtheinus dentatus. 



Fig. 22. Dorsal view of female. 



23. Second antenna. 



24. Mouth-tube and first maxilla in side view. 



25. Mandible. 



26. Second maxilla. 



27. Maxilliped. 



28 to 31. First, second, third, and fourth swimming legs. 

 32. Second antenna of the male of Paralebion elongatus. 



Plate 68. 



Female of Lernaeopoda inermis. 



Fig. 33. Side view of female. 



34. Ventral view of mouth-tube and second antenna. 



35. Mandible. 



36. Maxilliped. 



