410 ZOOPHYTES. 



II. G. explanaUe, centra stipitatce. 



2. GEMMIPORA PELTATA. (Esper.} Blainville. 



G. explanata; fronde stipitatd, saepe peltata et superne concavd, scepe varie 

 plicato-contortd, margine 23'" crasso. Corallum caliculis cylindricis, 

 inter dum obsoktis, plerumque 3'"- latis et margine crasso, lamellis 

 ferme 32. 



Explanate; frond stipitate, often peltate, usually concave above, often 

 variously plicato-contorted when of large size ; margin 2 to 3 lines 

 thick. Corallum with the calicles cylindrical, sometimes obsolete, 

 mostly 3 lines broad, with a stout margin and about 32 lamellae to 

 the cell. 



East Indies. The Feejee Islands. Exp. Exp. 



When of small size, or but four or five inches in breadth, the form 

 of the species is that of a shallow basin supported below at centre ; 

 but on growing beyond this size, the margin becomes contorted in 

 broad folds. One large specimen of this kind, obtained at the Feejees, 

 measures sixteen inches in breadth, and twelve in height The cali- 

 cles are sometimes a third of an inch in diameter, and about the lower 

 parts of the concavities are obsolete. The cells are two to three lines 

 deep, and have a broad and somewhat convex bottom. 



Madrepora peltata, Esper, Fortsetz., i. 27, Explanaria crater, Schweig., Handb., 419. 



and ii. p. 15, tab. 42, and 86, fig. 2; Gemmipora peltata, Blainv., Man., 387. 



characteristic figures : the first is nearly Turbinaria cupula, Ehrenb., G. 49, sp. 1 ; 



flat and peltate, the second is convex above Ehrenberg's T. peltata has smaller cali- 



instead of concave. The larger calicles cles than the cupula, and the description 



are from three to four lines in diameter. does not agree as well with Espcr's figure. 



3. GEMMIPORA PATULA. Dana. 



G. explanata ; fronde stipitatd, infundibuliformi, et scepe varie plicato- 

 contorta, margine l-3"' crasso. Corallum caliculis brevibus, cylin- 

 dricis, 2'" latis, margine subacutis, multis brevissimis aut obsoktis. 



Explanate; frond stipitate, infundibuliform, and often variously pli- 



