THE TEMPERATURE OF THE FLORIDA CORAL-REEF TRACT. 



32S 



Fig. 7. — Map showing stations at Fort Jefferson, Tortugas, where water-temperature readings were made. 



Scale looiio- 



The accompanying figure (fig. 7) shows the precise location of the 

 stations at which the readings were taken. The coral fauna within the 

 moat and outside the floodgate is that typical for inner flats. The commonest 

 species are Favia fragum, Meeandra areolata, M. clivosa, Siderastrea radians, 

 Pontes pontes (= P. clavaria), P. furcata, and P. astreoides. The fauna on 

 the piers of Fort Jefferson wharf, which is next a ship channel, is far more 



