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tenuis, C. patelli[omlis and C. vaughani we came to the conclusion that the rare and not well-known
species C. erosa is next to the present specimen, which we describe as follows :
Corallum round, 35 mm in diameter. Upper surface slightly convex, underside flat. Margin very thin
and slightly undulating. Septa unequal, also at the margin ; aU are thin, only those of the first two cycles
are a little thickened at the fossa . The septa of the fourth cycle decrease suddenly in height towards the
mouth, those of higher cycles lower gradually. The lower parts of septa unite with those of next higher
cycles and finally reach the fossa . Septal margins are sharp with irregular dentations, lacerated by slits
and perforated by slit-like holes. Sides of septa with granules, lower parts of septa strongly granulated.
Marginal part of costae lami nar and thin, every fourth a little more prominent with irregularly arranged
small denticles. Towards the centre costae continue as rows of granules. A scar of attachment present.
Mat e ria I : Gulf of Aqaba: SCHUHMACHER No . 212 (Eilat ).
Dis t rib uti 0 n : Red Sea ; Indonesia, Japan, Great Barrier Reef.
Rem a rk s : Cycloseris erosa was hitherto not known from Red Sea.
Fungia
Cycloseris
Diaseris
distorta
d istorta
distorta
Cyclosens dist orta (MICHELIN), 1843
(Pl ate 16. Figs. 8- 11)
1902. DOEDERLEIN, 74 ; pl s. 3: 5/ 3, h Csynonymy).
1906. v. MARENZELLER. 88.
1909. GARDINER. 268.
1923. BOSCHMA. 142; pl. 9/ 10.
1925. BOSCHMA . 203 ; pI. 6155 - 64.
1954 . WELLS. 447.
1976. PILLAI & SC HEER. 43.
1980. HEAO. 150. 452.
1909. HARRISON & POOLE. 901 ; pI. 85/2b. 3 •.
1979. SCHUHMACHER. 210.
1980, VERON & PICHON. 121 : figs. 194- 196.
SLR 395- 13 is more or less a flat disc (cyclosens form ) with a greater diameter of 45 mm. Underside
flat. Costae a little more pronounced at the periphery than at the central part of the disc. Major septa
thickened, wavy, edges entire, sides granulose.
SLR 1400 and 1401 are diaseris forms , the former with 7 petaloid divisions at the periphery, and the
latter with 3 divisions. Costae alternating in height, covered by small spines. Septa of sub equal height
throughout the lengrh . Edges look blunt, sides heavily granular.
M a terial:
Gulf of Aqaba : Jerus. SLR 1400- 1, 2,1401- 1- 3, 395 - 13 (Marsa Murach).
T. Aviv NS 9303 (Eilat).
Dis t rib uti 0 n : Red Sea eastward to Tahiti.
Fungia
eyclouris
Cycloseris eyclolites (LAMARCK) , 1801
cyc10lit(s 1902. DOEDERLEIN. 77; pis. 417-9; SIS, Sa (synonymy).
1909. GARDINER. 270.
1925. SOSCH,\iA. 205 ; pis. 5/24 ;6125 - 48.
1927. FA USTINO. 171 ; pI. 46/4 . 5.
1952. CROSSLAND. 153.
1954. ROSSI . 42.
cy cJolites 1879. KLUNZINGER 3, 71.
1941. YASE & SUGIYAMA. 76; pis. 64/ 2--4