180 ON THE SOLITARY CORALS, COLLECTED BY DR A. WILLEY. 



which they fuse deeper in the corallum. (The exsert portions of two of the tertiary septa 

 at the top right-hand corner of the figures are broken.) 



Fig. 26. Antillia siwaata, n. sp. 



(a) Profile view of the corallum. The epitheca is very thin and extends up to 

 about 3 - 5 mm. from the edge of the calice. Below it has been worn away by various 

 organisms and the costae are exposed. The pedicle of the corallum is broken. 



(6) The calice from above. There are 102 septa, the lower cycles of which are 

 not readily differentiated. The columella is a mass of tangled and anastomosing processes 

 arising from about half of the septa. 



