TRIBE I. ASTR^EACEA. 261 



97 ; " Meandrinis costis tcnuissimis, acu- Meandrina phrygia, Lamouroux, Exp. 

 tis, magis undosis et nonnihil concate- Meth. 56, pi. 48, fig. 2. 



natis, lamellatis, interstitiis angustis." ,Deslongch.,Encyc.509,pl.485,fig.2. 



Meandrina phrygia, Lamk., ii. 389, No. 8. , Blainville, Man. 357. 



9. MEANDRINA GRACILIS. (Dana.} 



l 



M. conveza; discis linearibus longis, rectis vel tortuosis (sicut phry- 

 gia) ; gyris fere 2'" latis. Corallum cellulosum, subrobustum ; colr 

 libus Gothicis, abrupte declivibus, 1'" altis ; lamellis subtiliter eroso- 

 denticulatis, fere cequalibus, numerosis, vix exsertis ; fossis angustis- 

 simis, fundo lamello-lineatis et non porosis : transverse secto, septis 

 f-1'" latis, subcelluksis. 



Convex ; linear disks long, straight or tortuous (as in the phrygia} ; 

 gyri nearly 2 lines broad. Corallum cellular, rather firm ; ridges 

 Gothic, abrupt, a line high ; lamellae finely eroso-denticulate, equal 

 or nearly so, numerous, but little exsert ; fossaa very narrow, lamello- 

 linear at bottom and not porous : in a transverse section, septa | to 

 1 line broad, subcellular. 



Plate 14, fig. 6, surface of corallum, natural size ; 6 a, section of 

 same, showing profile of lamellae ; 6 b, transverse section of same, 

 natural size. 



Feejee Islands. Exp. Exp. 



This is a neat species, growing in irregularly convex masses, some- 

 times nearly hemispherical, with narrow gyri, and rather thick septa, 

 though thin and acute at apex. There are twenty to twenty-four 

 lamellae to half an inch ; and in this respect, as well as the equality of 

 the lamellae, and their less ragged edges, the species is very distinct 

 from the phrygia. The septa are much thicker and more solid than 

 in the tennis, and the lamella, moreover, are more crowded, and the 

 gyri less narrow. 



Ellis's figure of the phrygia represents follows, from a worn specimen in the 



tolerably well this species, except that Royal Museum, at Berlin : " Semipedalis, 



the lamellce are not numerous enough. semiglobosa, anfractibus perangustis, lon- 



The M. phrygia of Ehrenberg (G. Ixii. sp. gis, lamellis parvis, remotiusculis, per- 



4), may belong here. He describes it as pendicularibus, colles referentibus." 



66 



