MADREPORA. 159 
Torres Straits and Great-Barrier Reef. (The habitat of the type specimen is not 
recorded.) 
a. ? ? 93.4.7. 89. (Type.) 
b. Port Denison. Saville-Kent Coll. 92. 6. 8. 120. 
c. Warrior Island. Saville-Kent Coll. 92. 6. 8. 127. 
es 
141. Madrepora tubicinaria, 
Madrepora tubicinaria, Dana, Zoophytes, p. 451, pl. xxxii. fig. 7; M.-Edwards & Haime, Coralliaires, 
t. iii. p. 152; ? Verrill, Proc. Essex Inst. 1866, vol. v. p. 23; ?ibid. 1869, vol. vi. p. 100; 
Rathbun, Proc. U.S. Nat. Mus. 1887, vol. x. p. 19. 
Corallum forming small round subcespitose clumps about 12 em. high, consisting of 
several branching stems rising from a common base. Branches little spreading, closely 
divided, nearly terete, 6 to 8 mm. thick, scarcely at all tapering; apex obtuse. Axial 
corallites 2 to 3 mm. thick, a little prominent. Radial corallites regular, appressed tubiform 
or cylindrical, applied at one side nearly or quite to the apex; length 3 to 4 mm., diameter 
1:6 mm., thin and fragile at the margin, exterior neatly striate; aperture broad and circular, 
opening upwards ; star narrow, six-rayed. (Dana.) 
Unless the specimen from Tahiti recorded by Verrill should prove to belong to this 
species, which seems very doubtful, the form has not hitherto been identified by subsequent 
investigators. 
There is a specimen in the collection of the British Museum, the habitat of which is not 
recorded, which may belong to this species. It has the following characters :—Corallum 
subcespitose, hemispherical, 22 cm. diameter and 14 cm. high. The colony consists of 
numerous forked and closely divided branches arising from an incrusting base, always more 
or less proliferous near the apex. Branches 1:5 cm. diameter at the base; distal divisions 
about 8 mm. diameter. Axial corallites 3 to 4. mm. diameter, hemispherical ; wall thick and 
porous. ‘The star consists of twelve septa of moderate development, the directives sometimes 
more prominent than the other primaries. Radial corallites subequal, tubiform, with a round 
aperture, nariform at first, appressed or a little spreading, length 2 to 3 mm., diameter | to 
1:5 mm.; inner part of the wall often thin, outer part a little thickened but quite porous, 
margin not rounded. On the middle divisions the corallites are very short, with a ring-shaped 
border; on the main branches all are immersed. In the tubular corallites only the directive 
septa are present, both are of moderate breadth, apparently the inner is often broader than 
the outer; below, in the subimmersed and immersed corallites, the star is quite distinct and 
consists of a well-developed primary series and a more or less complete second cycle. 
Pacific Ocean: Fiji, ? Tahiti. 
@ ——? 93, 4. 7. 115. 
142. Madrepora botte. 
? Madrepora pharaonis, M.-Edwards & Haime, Coralliaires, t. iii. p. 148 (part.). 
Corallum cespitose from a central base, with very few immersed corallites below ; height 
