CLASSIFICATION OF ZOOPHYTES. U5 



Genera. Buphyllia, Ctenophyllia, Mussa, Manicina, Caulastraea, Tridacophyllia, 

 Astrsea, Meandrina, Monticularia, Phyllastram, Merulina, Echinopora. 



Family III. Fhugidje. Coralligenous ; disks not circumscribed, tentacles scattered, 

 short, and often obsolete: simple or aggregato-gemmate ; when aggregate, the disks 

 every way confluent without interstices: coralla, generally with a stellate surface, and 

 without proper cells ; lamella', in aggregate species, continuous between adjacent polyp- 

 centres. 



Genera. Fungia, Cyclolites, Herpetolithus, Halomitra, Polyphyllia, Zoopilus, Pavonia, 

 Agaricia, Psammocora. 



Tribe II— CARYOPHYLLACEA. 



Polyps having numerous tentacles in two or more series : mostly 

 gemmiparous, gemmation inferior, buds lateral ; rarely (as in some 

 Cyathophyllidae) growing upward above the summit of the parent, 

 but summits of polyps (the disks or adjoining margins) not prolate: 

 generally coralligenous; coralla calcareous, cells many-rayed, inter- 

 stitial surface not lamello-striate. 



Family I. Cyathophyllid.e. Coralligen ms, the corallum of each polyp internally 

 at middle, usually transversely or obliquely cellular. 



Genera. Cyathophyllum, Calophyllum, Amplexus, Caninia, Arachnophyllum, Acer- 

 vularia, Cystiophyllum, Clisiophyllum, Michelinia, Columnaria, Sarcinula. 



Family II. Caryophyllid.e. Coralligenous; tentacles crowded and long, ni:uths 

 long exsert ; corallum internally not transversely cellular; cells many-rayed (rays more 

 than twelve), margin of calicles thin, interstices not lamello-striate. (Lamellae nearly or 

 quite entire.) 



Genera. Ecmesus, Cyathina, Stephanophyllia, Turbinalia, Desmophyllum, Culicia, 

 Carycphyllia, Dendrophyllia, Oculina, Anthophyllum, Stylina, Astroitis. 



Family III. Gemmiporid.e. Coralligenous, tentacles short, marginal, in 2 to 3 series, 

 disk broad and a little convex : coralla porous ; calicles with a stout margin, lamelloe 

 even and not exsert. 



Genera. Gemmipora, Astraeopora [>.). 



Family IV. Zoanthid.e. Not coralligenous, exterior subcoriaceous ; tentacles short, 

 marginal, in 2 or 3 series; disk often convex with the margin radiately striate and some- 

 times much reflexed. 



Genera. Isaura, Zoantha, Palythoa. 



Tribe III.— MADREPORACEA. 



Tentacles in a single series, 12 (rarely more), sometimes obsolete; 

 gemmiparous, gemmation lateral : coralligenous, coralla calcareous, 

 cells quite small, rays 6 to 12 or obsolete ; interstitial surface not 

 lamello-striate. 



Family I. MADREPORjn.E. Polyps with 12 tentacles, not secreting lime at middle 

 part of base; and hence the cells deep, extending to the centre of the corallum. 

 Genera. Madrepora, Manopora. 



