Symphyllia anguillensis sp. nov 
PI. , fig. 
Coral lum with an undulate, subhor isontal base, and a 
gently scalloped margin. Height, 40 mm.; length, 96 mm.; 
width, 93 mm. 
The "base is covered "by an incomplete epitheca that ex- 
tends to its edge. Below the epitheca, not always covered hy 
it, are numerous low, equal or suhequal, narrow, serrately den- 
tate costae. There are from 8 to 12 costae to the cm., the 
coarse costae having coarser dentations. 
The upper surface presents wide rather shallow valleys, 
which throw off lateral lobes, and are separated by simple col- 
lines -- if double walls occur at all in the collines they are 
rare, Y/idth of valleys 12 to 22 mm.; depth, 3.5 to 7 mm.fi 
width of top of arch of collines 3 to 5 mm 
