Corals from the China Sea. 371 



The description of this species states that it is cylindro- 

 conical in form; but in wliat 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 subcylindrical portions are not developed. 



Genus IIvdxoimioka, Fischer de Waldheim. 



Hydnophora vucrocona, Lam., sp. 



1816. Monticuhria microconos, Lam. Hist, des Anim. sans Veit. t. ii. 



p. 2ol, 2nd ed. (1836) p. 393. 

 1786. Madrepora e.vesa, Ell. & Sol. (non 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 G fath. 



Hydnophora rigida, Dana, sp. 



1846. Merulina rigida, 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 Fa via, Oken. 



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



1786, Madrepora denticuhta, Ell. & Sol. Nat. Hist. Zoophytes, p. 160, 

 pi. xlix. fig. 1. 



A small specimen incrusting the base o£ a Madrepore. 

 Tizard Bank, 7 fath. 



Favia Oheni^ 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 Ehrenheryi, Klunz,, var. sulcata, Klunz. 



Favia Ehrenberqi, K 

 29, Taf. iii. fig. 8'(vai 



Tizard Bank, 5 fath. 



1879. Favia Ehrenbergi, Klunz. Die Korallth. desrothen Meeres, Th. iii. 

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



2V 



