240 ZOOPHYTES. 



Feejee Islands. Exp. Exp. 



The minute channel along the summit of the ridges is a striking 

 character; and also the solid septa, and the crowded, even, minutely 

 denticulate lamellae. It approaches the pentagona, but the sulcus and 

 the absence of the corona of teeth within the cell, distinguish it from 

 that species. 



43. ASTHMA PULCHRA. (Dana.} 



A. convexa, umbrina ; collibus apice pallidis, tentaculis brunneis. Coral- 

 lum subsolidum, robustum; cellis angulatis, incequalibus, scepius 3-4'" 

 latis, subprofundis, intus non coronatis ; collibus triangulatis, integris ; 

 lamellis cequalibus, confertis, tenuibus, fere integris: transverse secto, 

 stellis multiradiatis cum cellulis simplicibus ; septis persolidis: verti- 

 caliter secto, porulis subtilissimis. 



Convex ; umber-coloured, top of ridges pale, tentacles brown. Co- 

 rallum subsolid, firm; cells angular, unequal, mostly 3 to 4 lines 

 broad, rather shallow, not coronate within; ridges triangular, en- 

 tire ; lamellae even, crowded, thin, nearly entire, but little promi- 

 nent over the septum : in a transverse section, stars many-rayed, 

 with the cellules simple : septa quite solid : in a vertical section 

 cellules under the star very minute. 



Plate 12, fig. 11, polyps partly expanded, natural size; 11 a, polyp 

 enlarged ; 11 b, section of cells, showing outline of lamellae, enlarged 

 two diameters; lie, same, natural size ; 11 d, vertical section of coral- 

 lum, enlarged ; lie, same, natural size; II f, transverse section of 

 corallum, enlarged three diameters. 



Feejee Islands- Exp. Exp. 



This species is near the petrosa in the size of its cells and its solid 

 septa, but the stars are more angular, and the texture below the cells 

 is very minutely cellular. It also resembles the purpurea, which 

 differs, however, in the delicate channel along the middle of the 

 ridges. 



