Agaricia portor icensis sp.nov 
PI. , fig. 
Corallum forming a rather thick unifacial frond. The type 
specimen is a fragment and does npt give a definite idea of the 
size to which the corallum grows. It i s 45 mm. long, of the same 
width, and 5.5 mm. thick. The hack is - without c alio ear , is naked 
^ L 
and fine^v costal, about 23 costae to 1 cm. — costa e are 
f\ ' 
subequal in size, alternately larger and smaller, or every fourth 
maybe slightly larger than those intervening. The edges 
ObrU- 
narrower than the bases and finely beaded. Intercostal furrows 
\ 
of about the same width as the costae. 
Calices not very definitely arranged, occurring in cluster 
or in irregular transverse series. Considerable areas are with- 
out calices. lach surrounded by from 6 to 9 urominent septo- 
A 
costae, as tall as 2 mm., and 1 mm. thick. Between these t on the 
upper (distal) side^quite often* there are smaller ones. Hew 
calices may originate by budding from the costate area. Diameter 
of fully developed calices, about 4 mm. The septo-costae in 
