178 CEYLON PEARL OYSTER REPORT. 



EXPLANATION OF PLATES. 

 PLATE I. 



Fig. 1. Eoaiiiiii taprobanica, a. sp., sub-adult female, from side. 



2. above. 



3. adult male, from side. 



4. above. 



5. young specimen, outline of carapace, from above. 



6. ,, female, anterior part of body, from below. 



,, 7. ,, ,, antennules and antenna of female. 



,, 8. ,, ,, antennule of male. 



,, 9. ,, basal part of antenna of male. 



,, 10. ,, ,, mandible of female. 



11. lower lip. 



12. ,, ,, maxillula. 



13. ,, ,, first maxilliped, with branchial apparatus of female. 



14. male. 



,, 15. second maxilliped of female. 



,, 16. ,, ,, third maxilliped, from below. 



,, 16a. ,, part of same, from above. 



,, 17. ,, ,, second leg of female. 



18. third 



19. fourth 



20. fifth 



PLATE II. 



Fig. 21. Eocuma taprobanica, first leg of female. 



22. ,, ,, male. 



,, 23. ,, second leg of male. 



24. third 



25. fourth 



26. fifth 



,, 27. ,, last somite and urojjod of female, from above. 



27a. ,, uropod from side. 



27b. tip of exopod of uropod, further enlarged. 



,, 28. ,, last somite and uropod of male, from above. 



,, 29. Eocuma affi/nis, n. sp., adult male, from side. 



,, 30. ,, carapace of same, from above. 



31. ,, portion of surface of carapace, further enlarged. 



32. first leg. 



,, 32A. ,, ,, distal end of basal segment, from above. 



,,33. ,, second leg. 



,, 34. ,, ,, last somite and uropod. 



35. Eocuma sarsii (Kossmann), female, from side. 



,. 36. above. 



,, 37. ,, ,, portion of surface of carapace, further enlarged. 



,, 38. ,, ,, last somite and uropod. 



