﻿218 



The Philippine Journal of Science 



1914 



Fig. 8. Lobonema mayeri, a mouth arm, showing the appendages, the windowlike openings, 

 and the irregular arrangement of the ducts ; somewhat diagrammatic X J. 



canal, which is a considerable distance from the margin, is very 



thin, and hangs down as a sort of fringe when floating. The bell 



is from 340 to 500 mm. in diameter measured from a sense club 



...... to the one 180° from it. Medusae having 



a diameter of at least 500 mm. and prob- 

 ably much more were very numerous. 

 The subumbrella is covered with very 

 flexible tapering papilla?, increasing in 

 size and number toward the center of 

 the exumbrella where they reach a length 

 of 60 mm. and a basal diameter of 15 mm. 

 Those in the center of preserved specimens 

 are stiff and solid at the base, but their 

 tips like the entire papillae toward the 

 outer position of the exumbrella are very 

 soft, shrunken, and without rigidity. In 

 life, they are all conical and flexible, 

 waving about in the currents of water. 

 Toward the center of the exumbrella. the 

 no. 9. Lobonema mayeri, a rather broad bases of these papilla? cover 



sense organ from the ex- £ ne en tire Surface. 

 umbrellar side. Much en- ^ _ « 



lanred. The 12 to 16 rhopalia are very short 



