318 ZOOPHYTES. 



Plate 21, fig. 3, zoophyte expanded ; 3 a, lamellae, natural size ; 3 b, 

 same, enlarged. 



Feejee Islands. Exp. Exp. 



This species resembles the pileiformis, but is narrower above, and 

 more conical in shape, when of large size, in consequence of its com- 

 mencing as a small cup; the small cup of the young state is the top 

 of the adult cap. The lamellae are also smaller and uniformly so, and 

 the corallum thinner. The small cup-shaped specimens, one of which 

 is figured in the plate referred to, are about three inches in diameter 

 and two in height, and when alive, they are bristled with tentacles, 

 looking something like an Echinus. A large specimen measures ten 

 inches in one diameter, seven inches in the other, and six in height. 

 Excepting the difference of size, the small and large specimens are 

 identical in their characters, and alike differ from the pileiformis. 



GENUS VI. ZOOPILUS. DANA. 



FungidcB libera, gemmates, explanatce ; polypis undique sparsis, oribus 

 radiate seriatis. Corolla lamellis majoribus usque ad peripheriam 

 radiate productis, intermediis minoribus et per oririmas interrupts. 



Free Fungidse, budding and explanate ; polyps every where scattered, 

 mouths radiately seriate. Coralla with the larger lamellae radiately 

 prolonged quite to the margin, the intermediate much smaller, arid 

 these alone interrupted by the oririmes. 



In general form and texture the Zoopili resemble the cap-shaped 

 Polyphyllise (P. pileiformis), but in structure they are quite different. 

 The polyp-mouths lie between the large ridges of the surface, which 

 radiate quite to the outer margin. In the corallum these ridges cor- 

 respond to the larger lamellae : the oririmes are situated between 

 them, and interrupt the subordinate lamellae at small intervals. These 

 zoophytes are hence very unlike the other compound free Fungidfe. 

 The animals are still unknown. From the deep dentations of the 

 large lamellae of the corallum, and the nearly entire margins of the 

 smaller crowded lamellae between, it may be conjectured that instead 



