Asterosmilia compressa 
A3 this species must be compared with Duncan’s A. abnor - 
mal! s the measurements of that sj>ecies, according to him, may 
be given here. 
ecimen 
Greater diameter 
of calice. 
Lesser diameter 
of calice. 
Height of 
corallum 
Humber of septa. 
1 
15.3 
12.75 mm. 
30.6 mm. 
2 
20.4 
15.3 
56.1 
prom these measurements it will be immediately noticed 
that A. compressa is relatively a much shorter coral, is decided- 
ly more compressed than A. abnonaalis . The crests above the 
pedicel seem to be about the same in the two species. 
Wall, not very thick, may be secondarily thickened from 
within, externally coated by pellicular, porcellanous epitheca* 
Costae distinct, but low, near the base every fourth one is 
somewhat more prominent than the intervening three, around the 
top of the pedicel they may alternate in size. They are granu- 
late along the summits 
