Azooxanthellate Scleractinia of Western Australia 
389 
Figure 5 a-c, Tremalotrochus verconis, west of Eucla, USNM 85714: a, edge view, x 12.6; b, costae and intercostal 
perforations, x 76; c, trifurcation of higher cycle costae, x 53. d-h, Conocyalhus zelandiae, Dampier 
Archipelago, WAM 379-88: d-f, side, oblique, and calicular views, x 23, x 30, x 36, respectively; g, upper 
theca showing supernumerary costae, x 97; h, enlargement of intercostal pits, x 150. i, Conocyalhus gracilis, 
holotype, intercostal pits, x 150. 
