Corals from the China Sea. 



357 



of these tlicrc are 7 species belonging to genera which may 

 projiorly be considered deep-water corals rather than reet- 

 builders ; these are DesmophyUnnij Flahelluin, C//at/tohelia, 

 LithophyUia, Tridacophyllia^ and Balanopliyllia. The 

 remaining 12 species of reef-corals living at these unusual 

 depths belong to the following genera : — Stijlophora, 1 sp. ; 

 Favia, 1 sp. at -45 fath. ; Pavonia^ 1 sp. ; Leptoseris, 1 sp. ; 

 rhyllastraa, 1 sp. ; Psammocora, 1 sp. ; Montipora^ 3 spp. (one 

 of these at 44 fath.) ; Phodanra, 1 sp. ; and Afveopora, 2 spp. 



It is also worthy of mention that tive new species of tlio 

 genus Madrepora — a genus usually limited to depths of under 

 10 fathoms — were found living at depths of 20 to 27 fathoms 

 both on the Tizard and Macclesfield Banks. 



Of the 18 species found growing on the coral-head inside 

 the lagoon 15 were not found elsewiicre, and tiie diver 

 reported that the bottom looked ditferent. This is rather a 

 remarkable fact, considering the size of the lagoon and the 

 depth of water. 



Tabular List of Genera and Species of Corals obtained from the Tizard and 



Macclesfeld Banks. 



[T. = Tizard Bank. M. = Macclesfield Bank.] 



Genera and Species. 



Madreporaria Aporosa. 



Stylophora, Sckw. 



dipitata, Pallas, sp 



pro:?trata, Kliutz 



pistillata, Esper, sp 



r* Ehrenbergi, E. Si- H. . , 



Guentheri, sp. n , 



Seriatopora, Lam. 



gracilis, Dana 



imbricata, sp. n 



compacta, .sp. n 



tenuis, sp. n 



armata, sp. n 



Pocillopora, Lam. 



elougata, Dana 



verrucosa, Ell. Sf Sol., sp. 



brevicornis, Lam 



, sp 



O-o. 5-10. 10-20 



Depth in Fathoms. 



G 



7 



6f 

 10 



20-30.' 30-40.1 40-50. 50-60 



26-27 



201 



32 



