496 ZOOPHYTES. 



microscope the surface appears fine mossy granulous, but not very 

 distinctly porous. The species resembles the hispida, but differs in 

 the larger obtuse papillae of the summits, and does not appear to be 

 foliaceous at base. The specimen in the collections is ten inches 

 high, and eight broad. 



Porites spiimosa, Lamarck, ii. 440, No. 16. pedalis, cespitosa, ramuloso-subfoliacea, 

 TheM. P. spongiosaot Ehrenberg(op. cit., multilobata, ramulis angulosis, compres- 

 Gen. Ixx. sp. 4), with which he makes sis, apice dilatatis, subcristatis lobatisque, 

 the spumosa synonymous, is probably a stellulis immersis, sexangularibus, mar- 

 different species ; he refers to Savigny's gine tumido, superficie ubique setuloso- 

 figure, pi. 4, fig. 4, but describes it with hispida, spongiosa, j'" latis." Red Sea. 

 other characters, as follows : " Semi- 



8. MANOPORA CIRCUMVALLATA. (H. 4- Ehreriberg.} Dana. 



M. cespitosa, semipedalis, ramulosa, irregularis, ramulis angulosis, irre- 

 gularibus, lobato-ramulosis, apice rotundatis, nee cristatis. Corallum 

 cellis incequahbus, confertis, margine lobato (quadrilobato) subinfundi- 

 buliformi circumvallatis, interstitiis setulose asperis. 



Cespitose, half a foot high, irregularly ramulose, branchlets angular, 

 irregular, lobato-ramulose, rounded at summit and not crested. Co- 

 rallum having the cells unequal, crowded, bordered by a lobed 

 (quadrilobate) margin, making it subinfundibuliform ; interstices 

 setu loso-asperate. 



Red Sea. Ehrenberg. 



M. Porites drcumvallata, H. & Ehrenberg, op. cit., Gen., Ixx. sp. 5. 



9. MANOPORA HISPIDA. (Dana.} 



M. base late foliato-explanata, parum convexa et margine sublobata aut 

 undulata, et " crassa, supra paucis caulibus crassimis, erectis, gibbosis 

 et tuberosis, nunquam angulatis. Corallum fragile, undique usque 

 ad apicem, dense spinuloso-asperum, spinulis fragilibus, 1'" longis ; 

 cettis immersis J'" latis, valde stellatis, Q-radiatis ; superjicie inferna 

 nuda. 



