Pocillopora tenuis Duncan 
PI. figs. 
186?* Pooillopora tenuis , Duncan, Quart. Jour. Geol. Soc* London, 
pisJztj 
VoX. XXIV, p. 21. figs. 5f-5o. 
The following is Duncan* s original description: 
"The coralluzn is large; hut the amount of i nt er cor alii te 
coenenchyma is small everywhere, whilst it 'barely exists in some 
parts. The tabulae are very delicate, rather and unequally 
close, and are often marked with a projection — the columella. 
The intertabular spaces do not fill up with coral tissue. The 
septa are small, very distinct, and are usually twelve in number; 
but in some calices there are a few rudimentary septa. 
The corallites are usually crowded, and six occupy about l/2 
inch. 
Loo . — -Antigua (Coll. Brit. Mus*). 
