TRIBE II. C AR YOPH YLLACE A. 



415 



1. ASTR^EOPORA PULVINARIA. (Lamarck.) Blainvitte. 



A. glomerata, scepe globosa, incrustans ; tentaculis 24 velpluribus, brun- 

 mscentibus. Corallum valde porosum, undiquepulvinato-echinulatum; 

 caliculis fere hemisphericis et basi contiguis, interdum obsolescentibus 

 et remotis ; cellis valde profundis, |'" latis. 



Glomerate, often globose, incrusting ; tentacles 24 or more, brownish. 

 Corallum very porous, surface pulvinato-echinulate ; calicles nearly 

 hemispherical, and contiguous at base, sometimes nearly obsolete 

 and distant; cells very deep, ^ of a line broad. 



Plate 29, fig. 3, corallum, natural size ; 3 a, animal, partly expanded, 

 enlarged ; 3 b, cell, enlarged ; 3 c, animal, less expanded ; 3 d, vertical 

 section of corallum, enlarged. 



The " Austral Seas." Peron 4- Lesueur. The Feejee Islands. 

 Exp. Exp. 



The masses sometimes have an undulating surface, and occasionally 

 are spheroidal or globular. One of the latter kind in the collections 

 is four inches in diameter ; and one of the former, six inches broad, 

 with a thickness of two to three inches. The cells are mostly a line 

 and a half deep, and the lamella are vertical, but much less crowded 

 than in the stellulata. On different parts of the same specimen the 

 calicles are crowded or distant, nearly obsolete or conoido-hemisphe- 

 rical. 



The polyps of the specimen examined were but partly expanded, 

 showing only the extremities of twenty-four tentacles in two series 

 (3 a). When less expanded the cells were closed by a radiated mem- 

 brane having an opening at centre, as shown in fig. 3 c. 



Astrea pidvinaria, Lamk., ii. 409, No. 15. 



, Lamouroux, Encyc., 130. 



Astreapora pulvinaria, Blainville, Man., 

 383. 



The Astrea myriophilialma of Lamarck, is 

 near the above. Lamarck states that he 

 separated it with some hesitation from the 

 pulvinaria on account of its less promi- 



nent and less crowded calicles, an unim- 

 portant character, as our specimens show. 

 Esper's tab. 54 B, fig. 2 (Pflanz. Fortsetz. 

 i.), to which Lamarck refers with a query 

 under A. myriophthalma, is a worn frag- 

 ment of a Madrepora (ii. 407, No. 9. 

 Astrceopora myriophthalma, Blainville, 

 Man., 383). 



