MADREPORA. 177 
echinulate, but the echinulations are sometimes obscured by the formation of a spongy film 
on the surface. Wall at first very finely striate, the striae consist of delicate echinulate 
plates, but later the striation is lost and the surface is then evenly echinulate. 
Pacific Ocean: Fiji and Pelew Islands. 
B. Corallum bushy, very closely divided. 
. 
a. Many of the radial corallites are tubular, others more or less nariform ; the 
margin is only slightly curved. 
190. Madrepora syringodes. (Plate XXXIII. fig. E.) 
Madrepora cf. durvillei, Ortmann, Zool. JB. 1888, Bad. iii. p. 151. 
Madrepora syringodes, Brook, Ann. Mag. N. H. 1892, vol. x. p. 463. 
Corallum bushy and much divided, sometimes of the bottle-brush type, with the 
branchlets longer on one side than the other. In bushy specimens the branches are 8 to 
10 mm. thick, much divided, the divisions little spreading, with the apices about 12 mm. 
apart. Most of the branchlets bear a number of spreading proliferous corallites, which form 
twigs about 15 cm. long and 5 mm. thick at the base but more near the apex. Axial 
corallites cylindrical, with the margin more or less distinctly rounded, 2°5 to 3 mm. diameter 
and 2 to 4 mm. exsert. Radial corallites appressed tubular, tubo-nariform or nariform ; the 
diameter, length, and angle vary with the form of the corallites; length 3 to 7 mm., 
diameter 1:75 to 2°5 mm., the stoutest closely resemble the axial corallites and ultimately 
bear buds; the majority are 3 or 4 mm. long and 2 mm. thick. The corallum is somewhat 
porous in section, the surface and wall closely and evenly echinulate. The axial and 
proliferous corallites possess a star of 12 moderately developed septa, but in the remaining 
corallites the septa are scarcely recognizable. 
This species resembles M. carduus, Dana, in many respects. . It differs from the 
specimens referred by Studer to that species in habit, in the stouter tubular corallites, the 
more spreading and frequently nariform radial corallites, and the presence of the immersed 
corallites on the main divisions. The corallum is also more porous and the surface is scarcely 
tabulato-echinulate. 
Pacific Ocean: Great-Barrier Reef, Samoa, South Seas. 
a. Palm Island. Saville-Kent Coll. 92. 6. 8. 209. 
b. -? Mansell Coll. 41. 1. 13. 10. Types. 
? 2?) 93.4. 7. 163. 
Cc. 
