0. eras solamel lata -24- 
corallites. Its dissepiments form square cells. The free 
surface "between the costae and calices has a few granules. In- 
crease by extra-calicular gemmation. 
Marl-formation of Antigua. Coll. Geol. Soc. 
Me aau r e me n t s . - — Pi ame ter of the calices in six specimens 
3/4 inch, in seven others 4/5 inch, and in some from l/2 to l/4 
inch. The elliptical calices (situated on the sides of the 
corallum) are about 1 l/lO inch in longest diameter. The greatest 
thickness of the septa at the wall is l/lO inch. Columella l/5 
inch in diameter. 
¥0 recent specimens of this species have as yet "been found, 
and its alliances are with Astraea hifolensis , Edwards and Kairne , * 
and Astraea Guettardi , Edwards and Haime The latter species 
* Polyp. Foss, des Terr, Palaeos., 1851, p. 98. 
f Op, cit, p. 97. 
includes also the Astraea nob ills , Edwards and Haime; it has a 
polygonal furrow around the calices, shallow fossae, septa ex- 
cessively thick at the wall, and indistinct walls. It has also 
