242 ZOOPHYTES. 



Plate 13, figure 2, cells of corallum, natural size; 2 a, 2 b, sections 

 of cells ; 2 c, transverse section of corallum, natural size ; 2 d, vertical 

 section of same, natural size. 



Feejee Islands. Exp. Exp. 



This species has not the columella of the pentagona, and moreover 

 the lamellae are very even. The depth of the cell is little more than 

 half the diameter. The corona at the bottom of the cell consists of 

 nine to twelve thin, prominent, rounded teeth. It approaches in its 

 corona and angular cells the magnified ; but the cells are much less 

 deep, less flexuous, and the cellules of the star are not decompound. 



NOTE. Plate 13, figures 3 a, 3 b, represent sections of a worn specimen of a light 

 cellular coral from Wake's Island, which may be identical with the above. The stars 

 are less angular, the septa a little more cellular, and the cross dissepiments on the 

 iamellfe, as seen in a vertical section (figure 3 b), are a little more remote, being about 

 half a line distant. 



Mad. cellulosa ( 1 ), Esper, Pflanz. Fortsetz. i. 25, tab. 40 ; from a worn specimen. 



46. ASTHMA EXIMIA. (Dana.} 



A. conveza. C. cellulosum, robustum ; cellis eleganter polygonatis, scepius 

 2'" latis, vix profundis, intus coronatis ; collibus J'" latis, abruptis, 

 acutis ; lamettis angustissimis, subintegris, non exsertis : transverse 

 secto, septis vix '" crassis, solidis ; stellis multiradiatis, cum cellulis 

 profundis, simplicibus. 



Convex. Corallum cellular, firm ; cells very neatly polygonal, mostly 

 about 2 lines broad, rather deep, coronate within ; ridges about half 

 a line wide, abrupt, acute ; lamellae very narrow, subentire, not at 

 all exsert : in a transverse section, septa scarcely a line thick, 

 solid, stars many-rayed, with simple, deep, cellules. 



Plate 13, figure 4 a, section of cells and ridges, showing profile of 

 lamellee; 4 b, size and form of cells ; 4 c, transverse section of corallum, 

 natural size ; 4 d, vertical section, natural size. 



Pacific Ocean. Exp. Exp. 



The cells are remarkably neat in their polygonal forms, with thin 

 acute ridges and very narrow lamellae, which striate with remarkable 



