474 ZOOPHYTES. 



tubuloso-papillosis, tubulis cylindricis, bilincaribus, integris, apice obtusis, rotundatis et 

 tenuiter perforatis, undique subtilissime denticulatis, obsolete aut non striatis, terminalibus 

 li'" latis, majoribus." He states that Esper's tab. 52 is near this species. 



46. MADREPORA BRACHIATA. (Dana.) 



M. arborescens, late remoteque ramosa, ramis longis, rectis, bene teretibus, 

 6-8'" crassis, ramulis extremis scepe 3" longis, apice parce proliferis. 

 Corallum subleve, caliculis lateralibus, confertis, subcequalibus, erectis, 

 tubiformibus, validis, compressis, oblique truncatis, extus subtiliter 

 striatis, apertura oblongd, stelld conspicua, duabus lamettis prominen- 

 tioribus. 



Arborescent, spreading, and remotely ramose; branches long, straight, 

 neatly terete, 6 to 8 lines thick, upper branchlets often 3 inches long, 

 apex sparingly proliferous. Corallum rather smooth, lateral calicles 

 crowded, subequal, erect, compressed tubiform, stout, obliquely trun- 

 cated at apex ; exterior very minutely striated, aperture oblong ; star 

 distinct, two of the lamella much the most prominent. 



Plate 38, fig. 3, part of corallum, natural size; 3 a, extremity of 

 branch ; 3 b, profile of calicle, natural size. 



The Sooloo Sea, East Indies. Exp.Exp. 



This species is remarkable for its long straight, evenly cylindrical 

 branchings; and its crowded, compressed, tubular calicles, with an 

 oblong aperture, erect, except near the apex. The surface of the 

 corallum and calicles is smooth, nearly like that of the formosa ; in 

 this character, and the oblong aperture of the cells, it differs from the 

 arbuscula. 



47. MADREPORA ARBUSCULA. (Dana.) 



M. arborescens, late ramosa, ramis teretibus, 6-9'" crassis, ramulis ex- 

 tremis scepe 3" langioribus, arcuatis, sensim attenuatis. Corallum 

 scabriculum, caliculo apicali latissimo (1J'"), exserto, celld J'" latdj 

 lateralibus cequalibus, subconfertis, tubiformibus, striatis oblique pau- 

 lum truncatis, erectis, non compressis, !-!'" longis sedramorum latere 

 inferiore brevissimis ; stelld valde conspicua. 



