30 MADREPORARIA. 
g. St. Kitt’s. C93 M4 abs 
i, ===? Mr. Sowerby [P.]. 45. 5. 21. 186. 
i, ——? ——? 37.6. 10. 12. 
iy. ? ——=? 93. 4. 7.26 toAll. 
z-bb. Port Darwin. Saville-Kent Coll. 92. 6. 8. 210 to 212. 
ec. Thursday Island. Saville-Kent Coll. 92. 6. 8. 214. 
2. Madrepora secunda. 
Madrepora secunda, Dana, Zoophytes, p. 481, pl. 40. fig. 4; M.-Edwards & Haime, Coralliaires, t. iii. 
p- 138; Verrill, Append. to 1875 ed. Dana’s Corals & Coral Islands, p. 333; Studer, Mitth. 
naturf. Ges. Bern, 1880, p. 18; Rathbun, Proc. U.S. Nat. Mus. 1887, vol. x. p. 17 (under 
M. nobilis); Ortmann, Zool. JB. 1888, Bd. iii. p. 150 (part.); ibid. 1889, Bd. iv. p. 504; 
? Bassett-Smith, Ann. Mag. Nat. Hist. 1890, vol. vi. p. 452. 
Madrepora nobilis (part.), Verrill, Bull. Mus. Comp. Zool. vol. i. 1864, p. 40, and later papers; (non 
Quelch, ‘ Challenger’ Reef Corals, p. 150). 
Corallum arborescent; branches numerous, terete, 12 to 17 mm. thick, summit 
branchlets 8 mm. thick, gradually tapering. Corallum scabrous; axial corallite 2 mm. 
broad. Radial corallites rather crowded, equal, nariform or dimidiate, and very much com- 
pressed, hardly stout, 2 to 3 mm. long; obsolescent on the inferior side of the branches. 
Star distinct, the directive septa quite prominent. Height of the corallum 46 cm. or more. 
(Dana.) 
A specimen in the Saville-Kent Collection agrees well with Dana’s description and 
figure, and is quite distinct from M. cervicornis. The branches are 1:7 cm. diameter, laxly 
coalescent. Axial corallites 3 mm. diameter, little exsert; some of the radial corallites 
which form new outgrowths have the same diameter, and may be 1 em. long and bear only 
a few bud-corallites. At a later stage these form branchlets 2°5 cm. long, and sometimes 
only 3°2 mm. diameter near the base, provided with numerous bud-corallites excepting near 
the apex. Radial corallites rather distant, as figured by Dana, not crowded, as noted in 
his description, thin-walled, tubo-nariform or dimidiate, 3 to 45 mm. long and 1:2 to 
1:6 mm. diameter ; those near the apex much compressed, with smaller ones between. Star 
scarcely developed ; two narrow directive septa are usually present, and sometimes indications 
of others. Corallum porous ; surface spongy-echinulate; wall striato-reticulate, not echinu- 
late unless near the base. 
Indo-Pacific Ocean: Singapore, Ceylon, ? China Sea, Great-Barrier Reef. 
a. Port Denison. Saville-Kent Coll. 92. 6. 8. 76. 
? 6. Tizard Bank, 5 fathoms. H.M.S. ‘Rambler.’ 89. 9. 24. 104. 
c. Baudin Is., N.W. Australia: H.M.S. ‘Penguin.’ 92.1. 16. 6 (part). 
3. Madrepora crassa. 
Madrepora crassa, M.-Edwards & Haime, Coralliaires, t. iii. p. 185 (non Ortmann, Zool. JB. 1888, 
Bd. iii. p. 149). 
Corallum stout, arborescent, each branch giving rise to a cluster of little-spreading 
branchlets, more proliferous near the apex and with occasional fusions from one branch to 
