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We have no specimen of this species in our collection. But HEAD has fo und two samples in a depth
of so m. He states (pers. comm.): "Septocostae unequal, dentate". On grounds of this description we
include the species into the Red Sea corals, though we could not study HEAD 's specimens.
Distr ibution: Red Sea; Reunion; Mauritius; Chagos Archipelago; Maldives; Houtman Abrolhos
Isis.; Palau Isis. ; Great Barrier Reef; Solomon Isis.; Marshall Isis. ; Hawaii; Tahiti.
Remark s: From the Maldive specimens , mentioned by PILLAI & SCHEER (1976: 40), only X2:
76- 4 and 76- 6 are L. seabra , the other three specimens are L. explanata.
Leptoserisexplanata VASE and SUGIYAMA, 1941
(Plate 13 , Figs. 1-4)
Lepl oseris expJatJatQ 1941 . VASE & SUGIYAMA, 7S ; pl. 63/3- 3t: (Type locality: Palau Isl ands),
1980, VERON & PICHON, 42; figs. 71 - 82. 738.
glabr. 1980. DINESEN. 200; pi s. 15 / 1- 3; 16/ 1- 3.
d . hawaiiensis 194 1. VABE & SUGIYAMA, 75 ; pI. 62/ 3- 3d.
scabra 1948 , MATTHAJ , 192 ; pI.4/ 11 .
In our collection are ten specimens of this species. Fri 34- 1 and Fri 86-1, which we received from
Prof. FRICKE , and which he has collected with his submersible " Geo" in depths of 92 and 90 m respectively,
are thin plates of 15 0 and 9 1 mm resp . in lengrh. SLR 383 , PW 73 609a and Sa 90 are thin saucershaped
pieces with diameters of 27,65 and 100 mm respectively. PW 73583 is parr of a bigger corallum.
It is the end of a branch about 10 mm thick and 40 mm broad, which bifurcates at the margin. The sides
of the branch are turned over and have overgrown the backside. PW 71 330 is an entire specimen, 12 cm
in greater sp read. The periphery divides into lobes. Cylindrica.l hollow processes, 2.5 cm high and 2 cm thick,
are seen at the peripheral parr. The coral looks in growth form like VAUGHAN's tubulifera = L. hawaiiensis.
Material:
Gulf of Aqaba : Jerus. SLR 383 (Marsa Murach); 665 (Marsa Abu Zabad).
Basel PW 73583 ( Eilat, 40- 45 m) ; 73 609a, 73612,71330 (Fara'un lsI., 40 m).
HLM Fri 34- 1 (Eilat, aquarium, 92 m).
Norrhern R. S.: HLM Fri 86- 1 (Sharm esh Sheikh, 90 m) .
Central R. S.: P. Sud. Sa 90,96 (Sanganeb R.).
Distr i bution: Red Sea; Reunion; Houtman Abrolhos Isis.; Palau Isis.; Great Barrier Reef;
Solomon Isis.
Rem ark s: The holotype of L. explanata is figured by VASE & SUGIY AMA (941) and by VERON &
PICHON (1980, figs . 80 and 81). The latter authors state that the type specimen resembles deep-water
specimens of their present series, and that " it differs substantially from the rest of the series in having
smaller corallites and less prominent septo-costae". This and the occasional presence of dentate sections
of the septocostae may have induced DINESEN to put L. explanata under L. sea bra and to establish a
new species, L. glabra. She included in that VERON & PICHON 'S specimens of L. explanata, but she has
not excluded the type specimen of L. explanata, figured by the latters.
We agree with VERON & PICHON in using the name explanata for Leptoseris specimens with strongly
alternating and non-dentate septocostae.
Leptoseris r mycetoseroides
Leproseris tnycetoseroides
AgoTicie/fa
Leptoseris
Agaricia?
mycetoseToides
incrustans
minicoiensis
Leptoseris mycetoseroides WELLS, 1954
(Plate 13 , Figs. 5 , 6)
1954. WE LLS, 445; pI. 153/4 - 6 (Type locality: Bikini Atoll).
1980. VERON & PICHON. 57. figs. 99- 103. 741.
1980. DlNESEN. 197; pis. 11 / 1- 3; 12/1 - 3; 13/1 - 3.
1980. HEAD, 149.451.
1922. v. d. HORST, 422; pI. 32/3.4.
1936. VASE. SUGIYAMA & EGUCHI . 55; pI. 42/5-7.
We refer three specimens to this species, viz. SLR 1250, PW 71 323 and X2: 8-11. All show the rypical
appearance with collines and intersecting ridges.