128 
THE VOYAGE OF H.M.S. CHALLENGER. 
Eleven in the Australian region — 
Retepora apiculata. 
„ producta. 
„ crassa. 
,, victoriensis. 
,, hirsuta. 
„ tubulata. 
„ columnifera. 
,, phcenicea. 
, y delicatula. 
„ margaritacea. 
,, jacksoniensis . 
Five in the Philippine region — 
Retepora producta. 
„ japonica. 
„ simplex. 
„ mucronata. 
„ philippinensis. 
Two in the North Pacific region — 
Retepora denticulata. 
,, contortuplicata. 
Bathymetrical Range. 
As at many of the Stations the depth varies very considerably, and in some is not 
stated at all, it is impossible for most of the species to specify any definite depth. It 
would seem, however, that of the twenty-six species six must have lived at a less depth 
than 20 fathoms, viz : — 
Retepora simplex. 
,, hirsuta. 
,, mucronata. 
,, tubulata. 
,, philippinensis. 
„ jacksoniensis. 
