TRIBE III. MADREPORACEA. 47] 



exserto; ramiculorum lateralibus parvulis et confertissimis, breviter 

 labellatis et fragilibus ; aliis totis obsokscentibus. 



Arborescent, very large, spreading and distant ramose, branches very 

 stout (1 to 2 inches), terete, summits gradually becoming conical, 

 and sides covered with oblong conical ramiculi, ^ an inch in length. 

 Corallum having the apical calicles broad (1 to l lines), a little 

 tumid, but not prominent; the lateral calicles of the ramiculi quite 

 small and very closely crowded, short labellate and fragile, the others 

 throughout obsolescent. 



A large and stout species, with distant branches, remarkable for 

 the incipient conical branchlets, which are rather thickly and evenly 

 scattered over the surface, and the very short contiguous calicles. A 

 specimen belongs to the East India Museum, at Salem, Massachu- 

 setts, measuring two feet in length, and, where largest, two inches in 

 diameter. 



43. MADREPORA VIRGATA. (Dana.} 



M. gracittime arborescens, late remoteque ramosa, ramis vix $" crassis, 

 valde elongatis, bene teretibus, et cequalibus, subarcuatis, polypis non 

 proliferis. Corallum vix porosum, subtiliter granulosum ; caliculis 

 lateralibus parvulis, subconfertis, prominulis, brevissime tubiformibus 

 tenidbus, margine acutis, cella orbiculatd, stella breviter sex-radiatd, 

 duabus lamettis prominulioribus. 



Slender arborescent, spreading and remotely ramose, branches scarcely 

 an inch in diameter, very long, neatly terete and even, subarcu- 

 ate, polyps not proliferous. Corallum scarcely porous, minutely 

 granulous, lateral calicles small, rather crowded, very short and 

 thin tubular, margin acute ; cell circular, star with six short rays, 

 two a little the most prominent. 



Plate 39, fig. 1, corallum, natural size. 



The Feejee Islands. Exp. Exp. 



This species is remarkable for its very neat cylindrical wand-like 

 branches, but little porous, and its very small and short, nearly smooth, 



