22 THE CRASPEDOTE MEDUSA OLINDIAS AND SOME OF ITS NATURAL ALLIES. 



EXPLANATION OF PLATES I-III. 

 ABBREVIATIONS. 



OlINDIOIDES FORMOSA. 



Fig. 1. Adult medusa in natural colors; diameter 55 mm. 



Fig. 2. Young medusa in natural colors; diameter 15 mm. at mouth of umbrella. 



Fig. 3. Portion of umbrella margin; diameter of lunbrella 30 mm. ExumbreUar view; X 27 diameters. 



Fig. 4. Portion of umbrella margin ; diameter of umbrella about 100 mm. ExumbreUar view ; X 13 diameters. 



Fig. 5. One sextant with manubrium; diameter of umbrella 15 mm. Subumbrellar view. 



Fig. 6. One sextant with manubrium ; diameter of umbrella 75 mm. SubumbreUar view. 



Fig. 7. Apical view of radial canals; diameter of umbrella 10 mm. 



Fig. 8. Apical view of radial canals; diameter of umbrella 15 mm. 



Fig. 9. Portion of gonad, showing three lobes which are subdivided into lobules; diameter of umbrella 90 mm. 



PLATE II. 



GONIONEMA DEPRESStJM. 



Fig. 10. Adult medusa in natural colors; diameter 18 mm. 



Fig. 11. Portion of tentacle, showing the adhesive gland disk. X54 diameters. 



Fig. 12. Portion of umbreUa margin including a radial canal; diameter of umbreUa 18 mm. 



Fig. 13. Radial canal with gonad and manubrium; nearly adult. 



Xl3 diameters. 



OlINDIOIDES FORMOSA. 



Fig. 14. Terminal portion of a longitudinal section of tentacle, showing the adhesive glandular patch ; diameter of 



umbrella 60 mm. X 54 diameters. 

 Fig. 15. Portion of a radial section of umbrella margin, showing the first traces of otocyst; diameter of 



umbrella 10 mm. X570 diameters. 

 Fig. 16. Portion of a radial section of umbreUa margin; diameter of umbreUa 10 mm. X420 diameters. 



PLATE III. 



OlINDIOIDES FORMOSA. 



Fig. 17. Portion of a horizontal section of umbrella margin; diameter of umbrella 10 mm. X420 diameters. On 



one side of the tentacle root the otocyst is just cut tangentially. 

 Fig. 18. Portion of a radial section of umbrella margin. X420 diameters. 

 Fig. 19. Otocyst in a later stage of development. X420 diameters. 

 Fig. 20. Portion of adhesive glandular patch; diameter of umbreUa 10 mm. X730 diameters. The mucus is 



seen as exudations at the free ends of the ceUs. 



GONIONEMA DEPRESSUM. 



Fig. 21. Portion of a longitudinal section of tentacle, showing the adhesive disk. X240 diameters. 

 Fig. 22. Otocyst fully developed; diameter of umbreUa 18 mm. X420 diameters. 



