Genua DIPLOTHBGASffHABA Duncan 
1867 , Diplocoenia , Duncan, Quart. Jour . Geol. Soc. London, Vol. 
XXIV, p. 20 (var. B. de Fromentel) . 
1884. Dip lo the o ast rasa , Duncan, Jour. Linn. Soc. London, Vol. 
XVIII, p. 115. 
Tyoe species : Diplocoenla monitor Duncan. 
Original description: 
•The corallum is massive. The corallites are polygonal and 
tall, united by a well-developed common wall, and present an ex- 
ternal coenenchymal space, an internal wall, whence arose the 
septa, a lamellar columella, and oblique dissepiments between the 
common and internal walla. Reproduction by gemmation in the 
coenenchymal space." 
