574 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



EXPLANATION OF PLATES. 



Plate 98. 



Fig. 1, a, b, two specimens of Synalphetts longicarpus with the parasite PhryxxLS sub- 

 caudalis, X4. 



2. Phryxus subcaudalis, female, view showing the short side of the body, XIO. 



3. Phryxus subcaudalis, female, ventral \'iew, X8. 



4. Phryxus subcaudalis, female, dorsal \iew, X8. 



5. Phryxus subcaudalis, female, view showing the legs of the long side of the 



body, XIO. 



6. a, b, c, Phryxus subcaudalis, males, X20; a, c, ventral; b, dorsal view. 



Plate 99. 



13. a, b, c. Three specimens of Synalpheus longicarpus with the parasite Synsy- 



nella deforvians, X4. 



14. Synsynella deformans, male, X25, ventral view. 



15. Synsynella deformans, male, X25, the one showing the dorsal surface has the 



abdomen abnormal. 



16. Synsynella deformans, female, ventral view, XIO. 



17. Synsynella deformans, female, dorsal view, XIO. 



18. Synsynella deformans, male and female, XIO. 



Plate 100. 



7. Pseudione upogebiae, female, dorsal view, X4. 



8. Pseudione upogebiae, female, ventral view, X4. 



9. Upogebia affinis with the parasite Pseudione upogebiae, natural size. 



10. Pseudione upogebiae, male, dorsal view, XIO. 



11. Pseudione upogebiae, male, ventral view, XIO. 



12. Pseudione upogebiae, male and female, X4. 



