54 



CORALS AND CORAL ISLANDS. 



One of the genera in this family is Alveopora. It contains 

 the h'ghtest of known corals, the texture being exceedingly 



porous, and the walls 

 of the cells, which 

 are continued regularly 

 through the coral! um, 

 are like delicate lace- 

 work. As stated long 

 since by the author, 

 " they are intermediate 

 in character between 

 the Montiporse and the 

 Favosites group " — as 

 shown by the texture 

 and the horizontal par- 

 titions across the cells, 

 giving them the " tabu- 

 late " character of the 

 ALVEOPORA vEKRiLLiANA, D. aucicnt T avositcs, as 



represented by the au- 

 thor in the annexed figure exhibiting a section of the coral- 

 lum of a Feejee species. On account of this tabulate structure. 



VERTICAL SECTION OK CORALLUM, AND UPPER VIEW OF CALICLES, ENLARGED, OF 

 ALVEOPORA SPONGIOSA, D. 



the genus was referred by the author to the Favosites family. 

 A related species, of unknown locality, has been made the 



