Corals from the China Sea. 



357 



of these there are 7 species belonging to geneva which may 

 properly be considered deep-water corals rather than reef- 

 builders ; these are Desmophyllum^ Flahellum, Cyathohelia, 

 Lithophylliay Tridacophyllia^ and Balanophyllia. The 

 remaining 12 species of reef-corals living at these unusual 

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

 Favta, 1 sp. at 45 fath. ; Pavonia, 1 sp. ; Leptoseris, 1 sp. ; 

 PhyUastrcea, 1 sp. ; Psanimocoi-a, 1 sp. ; Montijjora, 3 spp. (one 

 of these at 44 fath.); Rhodarrea, 1 sp. ; and Alveopora, 2 spp. 



It is also worthy of mention that five new species of the 

 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 elsewhere, and the diver 

 reported that the bottom looked different. 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 



Macclesfield Banks. 



[T. =Tizard B;iuk. M. = Macclestield Bank.] 



Genera and Species. 



Madreporabia ApCiROSA. 



Stylophora, Schiv. 



dio^itata, Pallas, sp 



prostrata, Klunz 



pistillata, Esper, sp. . . , 



r' Ehrenbergi, E. ^ H. . 



Guentheri, sp. n 



Seriatopora, Lam. 



gracilis, Dana 



inibricata, sp. n 



compacta, sp. n 



tenuis, sp. n 



aruiata, sp. n 



Pocillopora, Lam. 



elougata, Dana 



verrucosa, Ell. Sf Sol., sp. 



-. brevicoruis, Lam 



, sp 



O-o. 5-10. 10-20. 



2 

 1 



3 J- 



2 



Deptb in Fathoms. 



5f 

 6 



7 



10 

 0^ 



20-30. 30-40.! 40-50. 50-60, 



26-27 



20.^ 



