BIGELOW: MEDUSAH FUOM THE MALDIVE ISLANDS. 269 



PLATE 6. 



Fig. 21. Xausitlioc punctata. 



Fig. 22. Aurelia niahlivciisis, radial canals, showing one octant of subunibrella. 



Fig. 23. " " marginal sense organ. 



PLATE 7. 



Fig. 24. Porpita lutkeana. 



Fig. 25. " " vertical section of disk; s, central stigmata; rav, cen- 



tral chamber; c, circular partition; 7^, white tubules; //., brown he- 

 patic tubules. 



Fig. 26. Porpita lutkeana, reproductive polypite with budding Medusae. 



PLATE 8. 



Fig. 27. Aurelia maldivcnsis. 



Fig. 28. Bolina ovalis. 



Fig. 29. Ocyroe pteroessa. 



Fig. oO. Cestus pectcnalis. 



PLATE 9. 



Chart of the Mnldive Archipelago, showing the track of the " Anira." 

 Reduced from Admiralty Charts 66«, GGI>, QGc; Sheets l-;3; Scale, .3.5 " — sixty 

 miles corrected to May, 1()U3. Northern, Central, and Soutiiern Maldives. 



