530 ZOOPHYTES. 



8. POCILLOPORA CLAVARIA. (Ehrenberg.) 



P. sujfruticosa, ramis subsimplidbus, dichotome divisis, \" crassis, un- 

 dique et apice obtusb ramuloso-verrucosis, verrucis subcequalibus, obtu- 

 sis, subovatis, interdum lobatis et obsolete proliferis, apice medio dis- 

 tinctius prolifero. Corallum cellis J-J'" latis, columelld exigua. 



Suffruticose, branches nearly simple, dichotomously subdivided, J an 

 inch thick, lateral surface, and obtuse apex ramuloso-verrucose, 

 verrucas subequal, obtuse, subovate, sometimes lobed and obsoletely 

 proliferous, middle of the apex more distinctly proliferous. Coral- 

 lum having the cells to J of a line broad, with a slender colu- 

 mella. 



Ehrenberg remarks, that two opposite lamellae of the cell are larger 

 than the rest and nearly bisect it. The locality is unknown. 



Pocillopora clavaria, Ehrenberg, G. Ixxv., sp. 8. 



9. POCILLOPORA SQUARROSA. (Dana.} 



P. ruditer hemispherica, ramis valde crebris, crassis, fere rectis, ince- 

 qualiter compressis, apice rotundatis, $ 1" crassis et f-2" latis, squar- 

 rose verrucosis, verrucis crassis, subglobosis, valde irregularibus, apice 

 extremo sczpe obsoletis. Corallum cellis parvulis ("'); stella vix con- 

 spicua, una lamella latissima. 



Rudely hemispherical, branches very closely crowded, stout, nearly 

 straight, unequally compressed, and uneven, summits rounded, to 

 1 inch thick, and | to 2 inches broad ; surface coarsely verrucose, 

 verrucae stout, subglobose, very irregular, and sometimes like large 

 tubercles ; often obsolete at summit. Corallum having the cells 

 small (J of a line) ; star scarcely distinct, with one lamella quite 

 broad. 



Plate 50, fig. 3, part of a branch, natural size; 5 a, extremity, show- 

 ing surface, ditto. 



Tahiti, Society Islands. Exp. Exp. 



