COPEPODA. 295 



EXPLANATION OF PLATES. 



PLATE I. 



Fig. 1. Ridge iva i/ia typica, n. gen. et n. sp., female, from left side. x 80. 



,, 2. ,, „ last thoracic segment, from left side. x 160. 



„ 3. ,, „ anterior antenna. x 123. 



,, 4. ,, ,, posterior antenna. x 220. 



„ 5. ,, ,, mandible and palp. x 220. 



„ 6. ,, ,, maxilla. x 220. 



„ 7. ,, ,, 1st maxilliped. x 220. 



„ 8. „ „ 2nd „ x 220. 



„ 9. „ ,, 1st natatory leg. x 220. 



„ 10. „ „ 2nd „ x 220. 



„ 11. „ „ 4th „ x 220. 



„ 12. „ „ 5th „ x 220. 



„ 13. ,, ,, abdomen and furca, from above. x 53. 



,, 14. Centropages tenuiremis, n. sp., female, from above, x 40. 



,, 15. ,, „ 5th pair of natatory legs, female. x 106. 



,, 16. ,, ,, right anterior antenna, male, x 53. 



„ 17. ,, ,, 5th pair of natatory legs, male. x 106. 



,, 18. ,, ,, abdomen and furca (male), from above. x 53. 



,, 19. Centropages dorsispinahis, n. sp., female, from above, x 53. 



,,20. ,, ,, cephalic segment, from left side, x 53. 



,, 21. ,, ,, basal joints of anterior antennae, female, x 106. 



,, 22. ,, ,, 5th natatory leg, female. x 106. 



,, 23. „ ,, right anterior antenna, male. x 53. 



,, 24. ,, ,, 5th pair of natatory legs, male. x 106. 



„ 25. ,, „ abdomen and furca (male), from above. x 53. 



PLATE II. 



Fig. 1. Pontelki dance, var. ceylonica, female, from above, x 32. 



„ 2. ,, „ ,, rostrum. x 80. 



,, 3. „ „ ;, inner branch of 1st natatory leg. x 159. 



„ 4. ,, „ ,, 5th pair of natatory legs. x 80. 



,, 5. ,, ,, „ abdomen and furca. x 53. 



,, 6. Labidocera kroi/en, var. gallensis, male, 5th pair of natatory legs, x 53. 



7. „ „ „ last thoracic and 1st abdominal segments. x 53. 



„ 8. ,, var. styiifera, male, 5th pair of natatory legs, x 53. 



„ 9. „ „ last thoracie and 1st abdominal segments. x 53. 



,, 10. Lubidvcera pert inula, n. sp., female, from above, x 40. 



,, 11. ,, ,, ,, rostrum, x 106. 



„ 12. „ „ „ inner branch of 1st natatory leg. x 160. 



,, 13. „ „ „ 5th pair of natatory legs, x 106. 



,, 14. „ „ „ abdomen and furca. x 80. 



„ 15. Pankllopsis fterdmani, a. sp., female, from above, x 40. 



,, 16. „ ,, ,, rostrum. x SO. 



