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Mate ri al:
Gulf of Suez:
Gul f of Aq3ba:
orthern R. S.:
J erus.
Jerus.
HLM
SLR
SLR
EC
2 144- 2 (Et Tur).
1248 (Fara'un 151.); 461 - J, 3, 4 (EI Kura ).
494- 496 (Safaga 151.); 53 (Koseir, duplic. from KLUNZINGER) ;
286 (Ras Abu Hagar).
liS (Wingate R.).
Central R. S.:
Southern R. S.:
HLM
HLM
RM
EC 351 (Massawa ).
Di str i b ut ion : Red Sea; Mauritius;M aldives ; Ceylon; Singapore; Philippines; Great Barrier Reef;
Fiji.
Madrepora
A croporll
Madrepora
Acropora
Madrepora
Acropora l1asllta (DANA ), 1846
(Plate 6, Figs. "' , 5)
/l amta 18-16, DANA, -153 : pI. H /2 (Type locality: Fiji).
1893, BROOK. 73 (sy nonymy),
nasuta 1971 , LaVA & SLOBODK IN. 123 .
1978. WA LLACE. 297: pI. 78 (syno nymy).
cY77l bicyatbus 1893. BROOK. 86 (synonymy).
cymbicyathus 1925 . HOFFMEISTER. 63 ; pI. 13 122, h,
dist icba
effusa
195-4 , WE LLS, 425 ; pI. 124/ 5- 7.
1893, BROOK, 84, pl.lJlD.
1893 , BROOK, 76 (sy no nymy),
NS 1286 is caespi tose. The radials and axials are more or less typical as described by BROOK. NS 1281 ,
represented by two branches, are referable to mr. crassi/abio. The corallum is caespito-corymbose, branches
8- 10 mm thick, slightly tapering at the top. Axial corallites 1.5 to 2 mm thick, I to 1.5 mm exsert;
septa six, poorly develo ped. Radials ascending, 1.5 to 2.5 mm long. 1.5 to 1.75 mm broad , t ip of the
outer wall slightly tapering in the form of half a ca noe or nariform. Opening oval. Immersed corallites
few. Corallites become smaller and verruciform at the basal parts of the branches. Wall solid and echinulate.
Dense in section.
NS 4889 is a large entire cacspitosc corallum with a solid base giving rise to numerous branches 2 to
5 cm high bearing branchlets I to 2 cm long and 5 to 8 mm thick. Rad ials nariform , average 2 mm lo ng
and wide. There are two cycles of septa in both the axials and radials. Coenenchyme echinulate.
Mate r ial: Gulf of Aqaba : T. Aviv 'S 1281,1286, 1357(Eilat); 4889 (Wassit).
Di s t rib uti 0 n : Red Sea; Diego Garcia (type localiry of A. disticba); Maldives; Lakshadweep
(PILLAI unpubl.); Ceylon; East Indies ; Ph ilippines (NEME ZO , 1967); Great Barrier Reef; Solomon 1515.;
Marshall 1515., (WELLS, 1954); Samoa; Tahiti.
Rem ark 5: WALLACE ( 1978) has already merged A. effusa (BROOK = , DANA ) and A. cymbicyatbus
with A. l1asuta, with which the present authors agree. Examination of a fair suire of specimens of this
species from the lagoon reef flat of Kiltan Island in the northern Lakshadweep has convinced PILLAI that
A. disticba (BROOK ) also belongs to this species. BROOK 'S descri ption of DANA 'S effusa shows not much
variation from A. l1asuta. DANA 'S description of his effusa is short and no figure of this in existence. The
type is said to be lost. In these circumstances no meaningful purpose will be served by merely reraining
a specific name like effusa, particularly in a genus like Acropora.
Acropora corymbosa (LAMARCK), 1816
(Pl ate 6, Fig. 6 : Pla te 7, Figs. 1- 3)
Heteropora
Madrepora
AcroporQ
corymboSIJ 18]4. EHREN BER G. 336.
corymboSQ 1879, KlUNZINGER 2, 24 : pis. 212. 2a, b: 4/ 1:8/21; 9/ 19.
1891. BROOK. 97 (synonymy. type lOCal ity: Indian Ocean).
1911, GRAVIE R, 70, pI. 9/38.
corymboSil 1906 , v. MARENZELLER. 32 ; pi s. 1- 2/ 1- 8; 1/ Ia- 8a, 9.
19 18. VAUGHAN , 17 1; pl. 67/ 1.