protethmos molanderi sp. nov 
PI. , fig. 
Corallum turbinate, transverse outline broadly elliptical, 
slightly flattened on one side, base smaller, broken on tip. 
Greater diameter of calice, 18 mm.; lesser, 15 min.; height, 17.5 
mm. 
Wall naked; costae distinct, corresponding to all septa, 
extending to the base, not especially prominent, but thick, 
equal in thickness but alternating in height, edges rounded and 
beaded. Intercostal furrows narrow, the costal faces rising 
abruptly from them. On the lower portion of the corallum the 
wall appears to be entirely imperforate, but with occasional pits 
apparently there are perforations near its upper edge. 
8epta, 60 in number, long and thin, all except the members 
of the last cycle prolonged either to or nearly to the axis , the 
near 
last cycle thin and terminating the axis. Synapt icula present. 
