468 ZOOPHYTES. 



of the same height. A specimen in the collections is eight inches 

 high and five broad. The calicles are irregular in position, opening 

 sometimes outward and downward, as well as upward. The branch- 

 lets taper gradually to a subacute apex. A fragment of the top of a 

 branch resembles somewhat the corallum of the M. scabricula; but 

 the apical calicle is very much smaller, and does not exceed in size 

 the lateral calicles. 



38. MADREPORA ASPERA. (Dana.} 



M. aborescens late ramosa, ramis terelibus, " crassis, apice conicis, pro- 

 liferis. Corallum porosissimum, scabriculum ; caliculo apicali crasso 

 (!&"')> prominulo ; lateralibus, breviter labellatis, fragilibus, divarica- 

 tis, non confertis, multis obsoletis, cellis grandibus, stettd brevissima, 

 duabus lamettis latioribus. 



Arborescent, spreading, ramose, branches terete, an inch thick, 

 summits conical and proliferous. Corallum quite porous, surface 

 scabrous; apical calicle stout (l lines) a little prominent; the 

 lateral short labellate, fragile, divaricate, not crowded, many obso- 

 lete, cells quite large, star very short-rayed, two of the lamellse 

 prominent. 



Plate 38, fig. 1, branch, natural size; 1 a, polyp, enlarged; 1 b, part 

 of section of branch, enlarged. 



Feejee Islands. Exp. Exp. 



The branches, though terete, have a somewhat ragged appearance, 

 owing to the unequal calicles. The immersed cells below are about 

 half a line broad. The specimen is a fragment three inches in 

 height. The fragile, labellate, lateral calicles, unequal, with some 

 obsolete interspersed, and the very large apical calicle, and quite 

 porous texture, are its more striking characters. 



39. MADREPORA HEBES. (Dana.) 



M. arbor escens, late ramosa, apice prolifera, ramis bene teretibus, 

 crassis, valde obtusis. Corallum caliculo apicali lalissimo 



