The mushroom coral fauna (Scleractinia: Fungiidae) of Brunei Darussalam (South China Sea) and its relation to the Coral Triangle Author Hoeksema, Bert W. Author Lane, David J. W. text Raffles Bulletin of Zoology 2014 2014-08-05 62 566 580 journal article 10.5281/zenodo.5354576 2345-7600 5354576 7B5056EC-50B9-4BFE-9B94-061EA6B285E4 Cycloseris fragilis ( Alcock, 1893 ) ( Fig. 3A, B ) Cycloseris patelliformis – Turak & DeVantier, 2011: 128 . Diaseris distorta (partim) – Turak & DeVantier, 2011: 130 . Not Diaseris fragilis – Turak & DeVantier, 2011: 131 (= C. sinensis ). This free-living species is moderately common at Brunei : recorded at 7 out of 17 sites ( Table 2 ). It was observed in complete and in fragmenting shape. It has also been recorded as C. patelliformis ( Boschma, 1923 ) (see Turak & DeVantier, 2011 ), which actually is a synonym of C. fragilis (see Hoeksema, 1989). Live specimens photographed in Indonesia and identified as D. distorta by Turak & DeVantier (2011) show thin septa, which are typical for C. fragilis and not for C. distorta (compare Hoeksema, 1989). Diaseris is considered a synonym of Cycloseris (Hoeksema, 1989; Hoeksema & Waheed, 2011 , 2012).