Corals from the OJiina Sea. 371 



The description of this species states that it is cyliudro- 

 conical in form ; but in what appears to be a genuine speci- 

 men of it in the British Museum there is a spreading basal 

 platform, with here and there elevations, some of which are 

 subcylindrical and rise to a considerable height. In the 

 present specimen the subcjlindrical portions are not developed. 



Genus Hydnophora, Fischer de Waldheim. 



Hydnopliora microcona^ Lam., sp. 



1816. Montioularia microconos, Lam. Hist, des Anim. saas Vert. t. ii. 



p. 251, 2nd ed. (1836) p. 39.3. 

 1786. Madrepora e.vesa, Ell. & Sol. (aon Pallas), Zoophytes, p. 161, 



pi. xlix. fig. .3. 



A single specimen of this species from the east lagoon, 

 Tizard Bank, China Seas, at a depth of 6 fath. 



Hydnophora rigida, Dana, sp. 



1846. Merulina riqida, Dana, Expl. Exp. Zoophytes, p. 276, pi. xvii. 

 fig. 1. 



A single specimen from the east lagoon, Tizard Bank, at 

 a depth of 6 fath. 



Genus Favia, Oken. 



Favia denticulata^ ^ Ell. & Sol., sp. 



1786. Madrepora denticulata, Ell. & Sol. Nat. Hist. Zoophytes, p. 166, 

 pi. xlix. fig. 1. 



A small specimen incrusting the base of a Madrepore. 

 Tizard Bank, 7 fath. 



Favia Okeni, Ed. & H. 



1857. Favia Okeni, Ed. & H. Hist. Nat. des Corall. t. ii. p. 430. 



A small specimen on the same block of rock with the pre- 

 ceding species. 



Tizard Bank, 7 fath. 



Favia Ehrenhergij Klunz., var. sulcata, Klunz. 



Favia Ehrenherqi, I 

 29, Taf. iii. fig. 8 (va 



Tizard Bank, 5 fath. 



1879. Favia Ehrenhergi, Klunz. Die Korallth. des rothen Meeres, Th. iii. 

 p. 29, Taf. iii. fig. 8 (var. sulcata). 



27* 



