TRIBE III. MADREPORACEA. 535 



their sides. The species has something of the habit of the ligulata, 

 but has much broader folia. The specimen from the Sandwich Islands 

 is very similar to that from the Feejees ; the summits of the folia are 

 lobed and meandering. 



III. Glomerato-cespitosce. 



16. POCILLOPORA INFORMIS. (Dana.) 



P. glomerato-cespitosa, basi solida, caulibus irregularibus, scepe gibbosis et 

 acervatis, partim nudis, partim remote et irregulariter verrucosis. 

 Coratti cellis parvulis (J'") ( columelld exigud, lamelldque und conspi- 

 cuis. 



Glomerato-cespitose, solid at base, branching irregular, often gibbous 

 and acervate, in part naked, in part remotely and irregularly verru- 

 cose. Corallum having the cells small ( of a line), a slender colu- 

 mella, and one lamella very distinct. 



Plate 51, fig. 3, corallum, natural size ; 3 a, view of surface and 

 cells. 



The Sandwich Islands. 



Forms rough-looking clumps, often a foot through, which are massive 

 at base, and very irregularly subdivided above. The surface is often 

 bare of verrucae in many parts, and, in others, is very uneven, and 

 gives off rudimentary branchlets or protuberances of various shapes. 



GENUS V.FAVOSITES. LAMARCK. 



Favositida glomeratcz aut ramosa; polypis segregato-aggregatis ; itaque 

 corallis structura prismaticis aut basaltiformibus ; cellis undique con- 

 tiguis, subangulatis ; lamellis 12 inter dum latis, scepissime omnino 

 obsoktis. 



Glomerate or ramose Favositidre; polyps segregato-aggregate, the 



