TUBIPORA. 



This Coral grows in immenfe maffes in the Eaft-Indian 

 Ocean ; it is now and then brought us from Prince's 

 Ifland, in the Straits of Sunda. The lamina?, or plates, 

 are generally half an inch thick, and full of minute pores 

 between the cellular ftarry cells, which both pafs from 

 each furface to the central longitudinal veffels in nearly a 

 perpendicular direction, and with which they are united. 

 The furface of this Coral, when magnified, is full of lit- 

 tle fharp points between the fmall pores and round the 

 larger ; and when we examine the larger flellated pores, 

 we find them furrowed on the infide to the bottom, 

 which makes a proper tranfition from this genus to the 

 Madrepores. 



*43 



XIII. TUBIPORA. 

 Animal incognitum. 



Stirps lapidea [Cor al- 

 lium] dijjepimentis tranf- 

 verJjSy tubulos perpendicu- 

 lares conneSlentibus. 



Tubuli articulati, in- 

 vicem co?nmu?iicantes^ Ji- 

 phimculis continuis genicu- 

 latiS) ad genicula radiatis. 



PIPE CORAL. 



The animal of the Pipe Co- 

 ral is unknown. 



The flem is ftony (that is 

 coral) with tranfverfe parti- 

 tions, uniting together the 

 perpendicular tubes. 



Thefe tubes are jointed, 

 communicating with one an- 

 other by means of geniculated 

 pipes, which pafs through 

 each of them, and are radiated 

 at their joints. 



Tul 



oipon 



