210 ZOOPHYTES. 



lamellae. Corallum very minutely cellular ; calicles short, round, 

 conical, crowdedly and evenly striate and finely denticulate with- 

 out; cells orbicular, 2 lines broad, rather deep, subcoronate within ; 

 lamellae almost equally exsert, denticulate : in a transverse section, 

 stars with many rays, and cellules sparingly subdivided ; septa 

 usually minutely cellular, with the cellules linear or > - shape. 



Plate 10, fig. 3, a, enlarged profile view of cell and larnellee ; b, 

 enlarged transverse section ; c, vertical section, natural size. 



The Feejee Islands. Exp. Exp. 



This species is smaller than the preceding, and the corallum is more 

 minutely cellular within. The lamellae are a little unequally promi- 

 nent, approaching thus the coronata ; but the much less inequality, 

 and the cross partitions in the stars are distinguishing characters, as 

 well as the more conical shape of the calicles and their more evenly- 

 striated exterior. The striae are forty-eight in number in adult cali- 

 cles. The lamellae are mostly hollow; and in a vertical section, they 

 are often deeply pectinato-erose, or penetrated by oblong cellules, the 

 pectinations and cellules being directed obliquely, a little upward and 

 inward. 



6. A. ORBICELLA ROTULOSA. (Ellis.) 



A. subglobosa ; polypis prominulis, lamellis 36 (?). Corallum, caliculis 

 brevissime cylindricis ; lamellis incequalibus et valde incequaliterque 

 exsertis, paucis ; cettis 2 2'" latis, per 6-8 denticulos coronatis. 



Subglobose, polyps a little prominent, with 36 (?) internal lamellae 

 Corallum with the calicles very short cylindrical; lamellae un- 

 equal and very unequally exsert ; cells 2 to 2 lines broad, with 

 a corona of 6 to 8 teeth. 



West Indies. Ellis, Lamarck. 



This is a handsome coral, with neat circular calicles, hardly a 

 quarter of an inch in diameter, having the margin set around with 

 unequally prominent lamellae, the larger projecting about half a line. 

 This character gives a bristly aspect to the surface. It differs from 



