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Genus Pbysogyra QUELCH , 1884
Type species: Pbysogyra aperta QUELCH, 1884 ; Plerogyra licbtensteini MILNE EDWARDS &
HAIME , 1851.
G e n e ric c h a r a c r e r s: Colonial, branches closely united with their walls. Endotheca highly
versicular. Calices in long sinuous valleys. Septa exsert, edges and sides smooth. Columella absent.
Plerogyra
Pbysogyra
Pbysogyra lic!Jtensteini (M rLN E EDWARDS & HAIME ), 1851
lichtensteini 1857, MILNE EDWARDS (& HAIME ), 20S.
licbtensteinj 1928, MA TTHAI, 186 ; pis. 63/ 1: 6 5/8 (synonymy),
1936, VA"E, SUGIVAMA & EGUCHI . 18, pI. 8/6.
1954, WELLS. 471 ; pl. 178/4.
1971 . CHEVALIER. 51; pIs. 1/2,311 . 2 ,3714.
1976. PILLAI & SCHEER, 71, pI. 3212 .
1980. VERON & PICHON, 366; figs. 645- 6 52.
1980, HEAD, 153.468.
The genus Pbysogyra is present in the Gulf of Aden with P. gravieri and P. somaliensis (see VAUGHAN,
1907a), bur was not known from the Red Sea. Now for the first time HEAD (J 980) has found two specimens
of Pbysogyra near Port Sudan, which are not identical with the Gulf of Aden specimens, therefore
he designated them as P. licbtensteini.
We have no specimen in our collection.
Dis t rib uti 0 n: Red Sea; Madagascar; Gulf of Thailand ; Celebes; Banda Sea; Taiwan; Ryukyu Isis.;
Palau Isis. ; Great Barrier Reef; New Caledonia; Marshall Isis.
Genus Gyrosmilia MILNE EDWARDS and HAIME, 1851
Ty pes p e c i e s: Manicina intemlpta EHRENBERG , 1834,
Generic cha r acters: Explanate, pedunculate, surface convex, meandroid . Valleys radiating
from the centre, 6 to 10 mm wide, 6 to 8 mm deep. Collines 2 to 3 mm thick with a middle shallow
groove, excepr ar rhe ends. Calicinal centres well defined. Sepra 10 to 14 per cm length of collines, larger
and smaller ones alternating. Septa exsert (1 to 1.5 mm), exsert parts arched or truncared, edges entire;
septa of the opposite side stop at the groove. Septa turn righr or left within the valley. Columella absent.
Costae present at the periphery of the corallum.
The genus is monospecific,
Gyrosmilia interrupta (EHRENBERG ), 1834
(Plate 37. Figs. 6- 8)
Manicina
Gyrosmilia
in terrupta 1834, EHRENBERG, 325 (Type locality : Red Sea, No. 618 in Berlin Museum).
interrupta 18S 7. MIL'JE EDWARDS (& HAIME), 203.
1879, KLUNZINGt::R 1. 2 ; pI. 1/ 8.
1928, i\\A TTHAI. 188.
1971, LOVA & SLOBODKIN , 125.
1974, MERGNER & SCHUHi\\ACHER, 265 .
1980, HEAD, 153 , 468.
The characters of this species are those of the genus. The only existing figure appears to be that of
KLUNZINGER . We give additional figures of the present material. There are eleven specimens before us .
They are all comparatively smaLl, the largesr is II cm in greater spread (PW 73 522) and is explanate. It
shows repeated encrustation. The corallum is very light. PW 71 312 is also explanate with a greater spread
of 9 cm. :--IS 8199 is 8 cm in greater spread. It has a very narrow cylindrical attachment,S mm in diameter
at the broken site. At the underside costae are prominent. In PW 73590 the costae are broken up
22 Zoologica, I JJ