about three thicker septa that seemed to be imperforate > The 
septa of the higher cycle 6 are thinner and more perforate. There 
is no regularity in the perforations — they may exist near the 
columella, in the median portion of a septum or near the peripher 
al (costal) ends* A longitudinal section shows that the 
trabeculae may be interrupted. The septal pores do not fill up 
near the base, probably due to the highly developed dissepiments 
cutting off the base of the corallum from the soft parts of the 
polyp. There is a tendency, but not a very striking one, to 
form septal groups* Sy nap t leula scarce, present near the base, 
and probably also present near the inner ends of the septa. 
Dissepiments well developed, curving outward, one sat above an- 
other. In a cross section of a corallum they show as several 
definite rings -- usually three or four rings occur between the 
columella and the peripheral or mural zone. Columella distinct 
ly developed, shows in transverse section as a number of axial 
trabeculae, which may be more or less fused among one another 
