MADREPORA. 17 
63. Madrepora haimei. 
Madrepora haimei, M.-Edwards & Haime, Coralliaires, t. iii. p. 151 ; Klunzinger, Korallenth. d. roth. 
Meeres, Th. ii. p. 21, pl. i. fig. 9, pl. v. fig. 4, pl. ix. fig. 16; Mobius, Beitr. z. Meeresfauna 
Mauritius, p. 45; Ortmann, Zool. JB. 1888, Bd. iii. p. 152 (mon Briiggemann, Phil. Trans. 
1879, vol. clxviii. p. 575). 
Madrepora arbuscula, Verrill (non Dana), Bull. Mus. Comp. Zool. 1864, vol. i. p. 40. 
Milne-Edwards’s type of this species consists of a fine cespitose clump, 25 cm. high 
and about 35 cm. broad. Main branches over 2 cm. diameter, becoming divided into two or 
three little spreading branches, with numerous subdivisions near the apex. The sudden 
taper near the apex of the branchlets, caused by the corallites surrounding the axial one 
being very small, whilst those a little below are much longer, is very marked in Red Sea 
specimens, but in those from other localities the taper is often gradual. Axial corallites 2 to 
3 mm. diameter, and 15 to 3mm. exsert ; wall moderately thick. Radial corallites spreading, 
tubular, with an oblique aperture ; some are 4: mm. long and scarcely 2 mm. diameter ; but 
a large number are shorter, smaller, or subimmersed. The corallites at the margin of the 
colony are in some specimens often unusually long, 5 to 6 mm., with a circular aperture. 
Corallum moderately porous; surface echinulate, sometimes rather spongy ; wall substriate 
and echinulate. 
The species varies considerably in habit. According to Klunzinger, the most frequent 
form is cespitose, with much divided and little-spreading branches, 6 to 8 cm. high; at 
other times more arborescent, 15 cm. or more in height, with the branches divided to the 
base. A flattened depressed form, similar to M. pyramidalis, var. depressa, also occurs. 
Ortmann states (/oc. cit. p. 152) that a specimen from Singapore, referred by Verrill to 
M. arbuscula, belongs to this species. 
Indo-Pacific Ocean: Red Sea, ? Diego Garcia, Maldive Islands, Ceylon, Mauritius, 
Singapore, Fiji. 
a. Koseir, Red Sea. Dr. Klunzinger [C.]. 86. 10. 5. 50. 
6. Galles, Ceylon. Dr. Ondaatje [P.]. 83. 4. 26. 4. 
?c. Diego Garcia. G. C. Bourne, Esq. [P.]. 91.4 9.8. 
d. ? Mantell Coll. 41, 1. 13. 15. 
e-g. ——-? ? 93.4. 7. 111 to 113. 
h,i. Mauritius. Purchased. 78. 2. 4. 2 & 5. 
js ke ? ? 40. 5. 15. 21 & 22. 
1. Maldive Islands. Purchased. 86. 11. 22. 9. 
64. Madrepora retusa. 
Madrepora retusa, Dana, Zoophytes, p. 462; M.-Edwards & Haime, Corallaires, t. ii. p. 154; Quelch, 
‘Challenger’ Reef Corals, p. 153; Rathbun, Proc. U.S. Nat. Mus. 1887, vol. x. p. 18. 
Madrepora plantaginea, Quelch (non Lamarck), ‘ Challenger’ Reef Corals, p. 153. 
Corallum small, cespitose, 12 cm. high and broad, consisting of irregular digitiform 
M 
