G. 
Ihoun 
21 - 
Goniopora calhaunensis , sp*nov, 
PI. , figs* . 
Corallum, with a rather delicate, fragile, texture, 
forming very light head-shaped masses - the largest has a diameter 
of .115 mm. and a height of about 70 mm. The upper surface is 
quite regularly rounded. The lower surface may be concave. There 
is evidence of the coral forming in strata, the newer layers being 
separated from the older by epitheca, 
Oalices somewhat excavated, distributed over the i^hole 
of the upper surface of the edge of the epitheca. Their outlines 
polygonal, ranging in diameter from 2.75 to 4.5 mm. The walls 
are quite thick, composed of numerous rows of synapticula joining 
the septa together. 
The septa are thin, not equal in thickness to the width 
of the interseptal loculi. The nromal number is three complete 
cycles, but in one abnormally large calice there are over thirty* 
Delicate synapticula very numerous 
