﻿IX. D, 3 



Light: Some Philippine Scyphomedusae 



225 



the center of the disk, and so a little longer than the bell 

 radius. They are veiy flexible. The inner wings bear mouths 

 to the center of the disk. The distal 3-winged portion of the 

 arm is about one-half the total length of the arm. The branches 

 are slender and delicate, and the fringed mouths are not crowded, 

 except toward the tip of the arms. At the center of the disk 

 is a slender filament, and around this a whorl of similar fila- 

 ments, one in the axil between each pair of arms arising from 

 a common interostial pillar. Scattered among the mouths are 

 a few similar but smaller filaments. At the end of each mouth 



Fig. 13. Lobonemoides gracilis, lateral view of one mouth arm and an interostial pillar, 

 showing the ducts as seen in an injected specimen ; diagrammatic. X 1. 



arm there is a large spindle-shaped appendage tapering to a 

 filamentous distal end and having a central canal. Scattered 

 on the distal ends of the arms are a few similar but smaller 

 appendages. The terminal appendages reach a length of 45 

 mm. and a maximum diameter of 6 mm. 



Each of the very narrow, interradial limbs of the stomach 

 receives two ducts from the mouth arms, one (fig. 13, a,) at 

 a point about one-third of the distance from its outer end to 

 the center and the other (fig. 13, 6) at the outer end. These 



