J> Types. 



MADEEPORA. 133 



132. Madrepora hispida. (Plate IX. fig. C.) 



Madrepora seeuris, Quelch (non Dana), ' Challenger ' Reef Corals, p. 148. 

 Madrepora hispida. Brook, Ann. Mag. N. H. 1891, vol. viii. p. 462. 



Corallum similar to that of M. palifera, Lamk., consisting of thick plates 4 to 8 cm. 

 broad and 2 to 3"5 cm. thick, or in other cases of thick, elongate, rounded branches, 3 to 6 

 cm. diameter near the base, and rarely vinder 3 cm. near the apex. Apices usually flattened. 

 Corallites at the apex 2'5 to 3 mm. diameter, with smaller ones scattered between ; walls con- 

 fluent as in M. palifera. Radial corallites usually crowded, but sometimes rather distant, short 

 nariform or tubo-nariform, but the inner part of the wall always short and thin. Diameter 

 1*5 mm., length 2 mm. The wall and surface of the coenenchyma consist of radiating 

 spinose plates, giving a very hispid appearance. The septa are arranged in two cycles, the 

 directives broad, the other primaries narrow, the remainder rudimentary. The species differs 

 from M. palifera, Lamk., in the smaller size of the corallites and the hispid character of the 

 surface. 



Pacific Ocean : Philippines, Banda, Araf ura Sea, Ponape. 



a. Banda. H.M.S. ' Challenger.' 86. 12. 9. 245.' 



{ = M. seeuris, Quel.). 

 6. Philippines. H.M.S. ' Challenger.' 86.12.9.336. 



{ = M. seeuris, Quel.) 



c. Samboangan, Philippines. H.M.S. 'Challenger.' 92. 10. 16. 29. 



{ — M. seeuris. Quel.) 



d. Flinders Bank, Arafura Sea, 9 fathoms. H.M.S. ' Penguin.' 92. 4. 5. 2. 



e. Ponape Island. Mus. Godeffroy. 81. 11. 21. 8. 



B. Corallites tubular. 



133. Madrepora seeuris. 



Madrepora seeuris, Dana, Zoophytes, pp. 486 & 487, pi. xljii. fig. 2 ; M.-Edwards & Haime, Coralliaires, 

 t. iii. p. 161 ; Studer, MB. Akad. Wiss. Berlin, 1878, p. 535 ; Eathbun, Proc. U.S. Nat. Mus. 

 1878, vol. X. p. 18 {non Quelch, ' Challenger ' Reef Corals, p. 148). 



Corallum cespito-laminate ; plates erect, oblong, quadrate at apex and strongly truncate, 

 scarcely lobed, 12 to 25 mm. thick ; surface uneven. Corallites very closely crowded, stout 

 and short, tubiform, 1'5 to 2 mm. broad, scarcely striate; aperture entire, circular; star 

 distinct. {Dana.) 



The type specimen is 15 cm. broad and consists of a cluster of oblong plates from a 

 common base, each 7'5 to 10 cm. long, 5 to 6'3 cm. broad, and 12 to 25 mm. thick. The 

 corallites differ from those of M. palifera in size, and also have a circular aperture. In 

 M. palifera the margin is wanting on the upperside. 



Amirante Islands, East Indies, Solomon Islands. 



a-c. Amirante Islands. H.M.S. 'Alert.' 82. 10. 17. 128, 154, & 211. 



T 



