1873.] DUNCAN — WEST-INDIA. TERTIARY. 553 



Division Asterosm.ii,iacE2E, Duncan, Phil. Trans. 1867. 



Genus Asterosmilia, nobis, Phil. Trans. Royal Society, 1867, 

 p. 653. 



The corallum is simple, long, and more or less horn-shaped. The 

 costse are irregular in their development, many being crested. The 

 septa are numerous and exsert. The columella is more or less solid, 

 essential, and compressed. Pali exist. The endothecal dissepiments 

 are distinct, tolerably numerous, and curved. 



1. Asterosmilia Pottrtalesi, spec. nov. PI. XIX. fig. 4. 



The corallum is slightly curved and compressed. The calices are 

 elliptical in outline. The columella is short, stout, and lamellar. The 

 septa are numerous, close, and thin ; there are five cycles of them, 

 and the fifth is incomplete in some systems. 



The costse are numerous, and alternately large and small. 



The endotheca resembles synapticulas ; and there is an epitheca. 

 Exotheca well developed. 



Height of corallum 1 inch. Length of the calice ^ inch. 



Loc. In the conglomerate of St. Bartholomew's, West Indies. 



In the collection of Mr. P. T. Cleve, Stockholm. 



Division Sttlinace^, Ed. & H. 

 1. Styioco2nia emarciata, Lamarck, sp. 



A specimen of this well-known form was found in the limestone 

 of St. Bartholomew's, "West Indies. 



1. Stephanoccenia incrtjstans, spec. nov. PL XX. fig. 6. 

 The corallum is low in height, and incrusts rocky surfaces. 



The corallites are united by their rather thick walls, and are parallel. 



The calices are quadrangular or pentangular, and their margins 

 are marked by the septa of the adjacent corallites. 



The septa are subequal at the wall, and 16 in number ; but only 

 eight reach the small and deep styloid columella ; the others pro- 

 ject very slightly, and are moniliform on their free edge. The pali 

 are attached to the eight larger septa. 



Height of corallum y 1 ^ inch. Breadth of calice ^V inch. 



Loc. In the limestone of St. Bartholomew's. 



In the collection of Mr. T. P. Cleve, Stockholm. 



2. Stephanoccenia eleoans, Leymerie, sp. 



Leymerie described this form as a Pontes ; Michelin associated it 

 with Alveopora ; and Milne-Edwards and Jules Haime determined its 

 relation with the Stylinaceae with pali, or the StepTianoccenice. The 

 European specimens were obtained from the Eocene formations of 

 Couiza, Coustonge, Fabresan (Aude), and of Oberburg, in Styria. 



Several fractured branches of a Steplianoccenia unlike Stephano- 

 ccenia intcrsepta, and resembling the description of Stephanoccenia 

 elegans, are in the collection of the University of Upsala, and they 

 came from the limestone of St. Bartholomew's. 



