TRIBE III. MADREPORACEA. 533 



than in the grandifolia; the meandrina has much larger cells, as well 

 as thicker and broader lamellate branches. 



The P. verrucosa of Ehrenberg (op. cit., G. Ixxv., sp. 8), which, as remarked, is not 

 the verrucosa of Lamarck, has close relations to the above. The following are the cha- 

 racters given : " Pedalis, cespitosa, subfoliacea, lobato-ramosa, ramis simplicibus, rectis, 

 paucis, 1-2" latis, valde compressis, validis, apice dilatatis, crista levi, lateribus aiqualiter 

 verrucosis, verrucis a ramulis subglobosis, simplicibus formatis, stellulis |'" latis, denticu- 

 lato-ciliatis." Locality unknown. 



13. POCILLOPORA MEANDRINA. (Dana.) 



P. cespitosa, bene hemispherica, ramis lamellatis, scepe sinuosis, subsim- 

 plicibits, -J" crassis, 1-3" latis, bene verrucosis, apice nudis. Coralli 

 verrucis paulo elongatis, angulatis, interdum proliferis, cum cellis 

 earum mazimis (scepe f '") ; stella columelldque inconspicuis. 



Cespitose, neatly hemispherical ; branches lamellar, often sinuous, 

 nearly simple, to \ an inch thick, 1 to 3 inches broad, neatly ver- 

 rucose, summits naked. Corallum with the verrucae a little oblong, 

 angular, sometimes proliferous, with the cells of the same quite 

 large (often \ of a line) ; star and columella indistinct. 



Plate 50, fig. 6, branch of corallum, natural size; 6 a, some of the 

 verrucae, ditto ; 6 b, transverse section, ditto. 



Sandwich Islands. Rev. Mr. Baldwin. 



This species resembles the grandis and elegans, but has more angu- 

 lar verrucaB arising from the fewer and much larger cells that consti- 

 tute them. The texture, moreover, is lighter and more cellular. It 

 forms neat hemispherical clumps, six inches in diameter, with broad 

 naked meandering summits to the folia, separated by intervals of about 

 a third of an inch. The verrucee are very nearly even, and cover the 

 sides of the branches nearly or quite to their bases. 



14. POCILLOPORA GRANDIS. (Dana.) 



P. bene hemispherica, caulibus laminatis, \' crassis (interdum f "), 2-4" 

 latis, (zqualiter verrucosis, apice lato et nudo. Coralli verrucis fere 



134 



