St, raristella -37- 
coral lum, but it appears with growth. The S» minuta is closely 
allied to the g, raristella , which is a characteristic Falisnian 
coral," The location of these specimens is not given* 
These Trinidad specimens are in the collection of the Geological 
Society of London, Nos. 12S74, 12975. Their state of preservation is 
too poor for them to be positively identified. The growth form is en- 
I crusting or massive. Calices small, about ,5 mm. in diameter and are 
separated by a mere ridge of a wall or coenenchyma as much as 1 mm. 
wide. The coenenchymal surface is densely granulate. Septa in two 
well developed cycles. 
The specimen that Dunca has labeled Stylocoenia (listed as Siylo- 
phora ) mirabilis Duchess. & Mich. (No. 12976, G. S. L. ) is the same 
thing precisely and has nothing to do with the Duch. & Mich, species. 
According to Duncan's description of his Stylo phora minuta both 
Duncan's S. rari st ella and _S. mi rab i 1 i s from St. Croix, Trinidad, should 
be referred to the same species 
