VerrilL] 330 



central space, around which are five or six slender, spinose pali. 

 Color of coral, ash brown. 



Diameter of the cells about .04 inch ; thickness of the largest spec- 

 imens 2 inches. 



Pearl Islands, Bay of Panama. F. H. Bradley. 



Stephanocora gen. nov. 



Cells moderately large, with one or two cycles of septa, which are 

 deeply toothed at the edge, well developed, and mostly confluent 

 with those of adjacent cells. Walls indistinct or wanting, the divis- 

 ions between the cells indicated only by small, granular points, which 

 sometimes interrupt the septa of adjoining cells. Columella papillose. 

 Pallform papillse before all the principal septa, the inner ones becom- 

 ing confounded with the columella. 



This genus is allied to Synarcea nobis, and Psammocora^ but differs 

 from the first in the well developed septa, and other characters, and 

 from the last, in having papilliform pali and columella, etc. 



Stephanocora stellata sp. nov. 



Corallum forming rounded clumps of short, irregularly lobed and 

 contorted branches, which are very unequal in size and fotm, some- 

 times nearly simple and angular, with a large cell at the top, at other 

 times, even on the same clump, having the summit very much ex- 

 panded, so as to form flattened, contorted lobes, with acute summits 

 and lateral crests, or even maeandriniform lobes. The branches are 

 usually about an eighth of an inch distant, sometimes more, the sides 

 covered with rather large, starlike, shallow cells, one, or several, 

 larger than the others, often terminating the branches, which appear 

 to increase by the upward extension of one of the edges of these 

 cells by submarginal budding. Septa twelve to sixteen, often with 

 others rudimentary, rather thick and strong, with sharp, spiny granu- 

 lations or teeth, on the sides and edges, and mostly confluent with 

 those of adjacent cells. 



Diameter of larger cells .1 of an inch ; height of coral 3 ; length 

 of living portion of branches .25 to .45. Color of coral, yellowish 

 gray. 



Panama and Pearl Islands. F. H. Bradley. 



Astrangia Haimei sp. nov. 



Corallum encrusting, consisting of prominent cylindrical corallites, 

 sometimes rising more than a quarter inch above the surface of the 

 basal expansion which connects them together, and becoming slightly 

 turbinate, and divergent when highest. 



The corallites are distant from each other from .04. to .25 of an 



