V , crassoramosa -4- 
and very equal in size* Columella small and often not to be 
seen; where it exists, some small papillae are also seen, and ten 
or twelve rudimentary septa likewise* Fossa shallow* Inter- 
calioular tissue dense and sparcely granular on its free surface, 
where there are often seen irregular polygonal lines. Costae 
none. Tabulae vary in thickness. Th# centre of the branches 
is occupied by lax longitudinal corallites, without intercorallite 
tissue. Thickness of branches from 1 l/2 inch to 8/l0 inch; 
diameter of calice about l/20 to l/'50 inch; diameter of inter- 
corallite space l/l2 to 1/20 inch* 
From the Uivaje shale, San Domingo . Coll. Geol. Soc.” 
There are three specimens of this species in the collection 
of the Museum of Comparative Zoology and one in that of the 
Academy of Natural Sciences of Philadelphia* Duncan* s description 
is quite satisfactory, I can add, however, that the verrucosit ies 
may occur on all sides of a branch, the terminal of a nearly 
perfect small branch is blunt, and that the calices vary from 5 
to 1 mm. in diameter 
