Stylophora compressa var. parvinodcsa nov. 
PI. , figs* • 
This variety differs from var. grandinodosa by its smaller 
and more numerous nodules, the intergradat ion between the two 
seems complete. 
As the preceding two varieties have been described only in 
a comparative way, an actual description of the present one is 
given. 
The corallum is rather small, growing upward from a rela- 
tively large base. The dimensions of a small specimen with 
fractured base are: Greater diameter of base, 20 mm.; lesser, 
13 mm.; height, 17 mm.; greatest width of corallum 32 mm.; lesser 
22 mm. Larger specimens exceed 50 mm. in height# The outer 
surface is very uneven, with numerous gibbosities and there may be 
larger lobulations. The gibbosities are very variable In size, 
the larger ones possessing a greater diameter of as much as 15 
mm., the smaller ones not exceeding 4 mm. They also vary in 
