OG 



CORALS AND CORAL ISLANDS 



ing leaves thus made are sometimes very large and sym- 

 metrical. 



2. Fungia tribe, or Futstgacea. — The general character 

 of the simple species of this tribe is mentioned on page 45, and 

 the character of the living Fungia, with its tentacles, is shown 

 in the figure of a Feejee species on page 46. Large, com- 

 pound groups, both massive and foliaceous, are formed by 

 budding, and the budding is always superior. There are 

 no margins to the disk in this tribe, and in the corallum 

 of the compound kinds no wall or partition between the ad- 

 jacent stars, and no walls to adjoining polyps, or only im- 

 perfect ones. The polyps consequently coalesce throughout 

 by their disks. The simple Fungige are attached when young, 



FUNGIA DANSI, E. & H., REDUCED TO ONE-SIXTH LINEALLY ; a, b, TEETH OF UPPER 

 AND LOWER MARGINS OF SEPTUM, NATURAL SIZE. 



and then would hardly be distinguished from a simple or 

 solitary species of the Astrsea tribe. 



3. Oculina tribe, or Oculesacea. — These species occur 

 either simple or compound, and the latter are often branched, 

 massive, or encrusting, never thin, foliaceous. Budding is 

 either superior, lateral, or basal ; never by spontaneous fission. 

 The coralla are remarkable for the solid walls and lamellas 

 of the cells ; and often for having the coenenchyma nearly or 



