230 ZOOPHYTES. 



Plate 12, fig. 1, natural size; 1 a, vertical section of corallum and 

 cells, with profile of lamellae, natural size ; 1 b, transverse section. 



Feejee Islands. Exp. Exp. 



The spiniform teeth which give the echinate character to this spe- 

 cies, stand crowded over the whole surface, and are a line or more 

 long. In a vertical section the coral has a strikingly lamellate struc- 

 ture throughout, and on the surface of the lamella the transverse 

 dissepiments, which are quite oblique, arch over (though with some 

 irregularity) from centre to centre, and are not lost in a solid septum, 

 as in most Astraas. 



The animals were not observed to have tentacles ; and it is pro- 

 bable that the papilla? of the surface over the spiniforrn teeth corre- 

 spond to those organs. The fleshy surface of the live zoophyte was 

 quite thick, and lay in small folds around each disk. 



30. ASTHMA FRAGILIS. (Dana.) 



A. subglobosa, polypis 4-5'" latis. Corallum percelluksum ; cellis subor- 

 biculatis et scepe oblongis, profundis, intus breviter coronatis ; collibus 

 rotundatis, sukatulis, 1'" crassis ; lamellis regularibus, subtiliter 

 ekganterque denticulatis, tenuissimis : transverse secto, stettis multi- 

 radiatis cum cellulis parce decompositis ; septis f" crassis, fragiliter 

 cellulosis, cellulis scepius uniseriatis. 



Subglobose, polyps 4 to 5 lines broad. Corallum light cellular ; cells 

 circular or oblong, deep, short coronate within; ridges rounded, 

 slightly sulcate, a line wide ; lamelte even, finely and neatly denti- 

 culate, very thin: in a transverse section, stars many-rayed, with 

 the cellules sparingly decompound ; septa f of a line thick, fragile 

 cellular, cellules usually uniseriate. 



Plate 12, figure 2 a, profile of cell, ridges and lamellae, natural size; 

 2 b, same enlarged ; 2 c, vertical section of corallum, natural size ; 2 d, 

 transverse section of the same. 



East Indies. Exp. Exp. 



This light cellular species with slightly sulcate ridges, is related to 

 the dipsacea; but the cells are smaller, the lamellae very even, thin, 



