173 



and its colour is quite as the figure in the ,,Siboga" Holothurians 

 Pl. I fig. 5. It has, like the other specimens, 13 tentacles, each 

 with ca, 20 pairs of digits united by a large web. The eyes are 



Fig. 20. Calcareous deposits 1-9 and calcareous ring 10 of Synaptula virgata. 

 1-2 from the anterior end, 3-4 & 6-7 from posterior end; 5 & 9 abnormal anchor- 

 plates of the specimen from St. 116. 1-4 & 9 x 180; 8 X 1000; 10 x 24. 



small and on preserved specimens not visible on the oral disk. The 

 cartilaginous ring is around the posterior margin of the calcareous 

 ring thick, white and intransparent, but closer to the circular canal 



