124 MADREPORARIA. 
GREAT BARRIER REEF—TORRES STRAIT. 
112. Porites Great Barrier Reef (4919. (P. Queenslandia nonadecima.) 
(Pl. XV. fig. 9; Pl XX. fig. 2.) 
[Warrior Island, Kelly’s Reef, coll. W. Saville-Kent ; British Museum. ] 
Description.—The corallum rises from an encrusting, laterally expanding base, into a loose 
irregular mound-like cluster of knobs, blunt points, ridges, and bent, rounded and flattened 
processes varying in size, thickness and height. The explanate base may run out into drooping 
tongues, but never projects far from the basal support; its edge may be 1°5 to 2 mm. thick. 
The calicles are conspicuous, shallow, almost superficial on the basal surfaces, very variable 
in size, from 1°5 mm., and well spaced on swollen convex surfaces, very minute, but still not 
very crowded in the valleys and depressions. The walls on the tops of the processes are slightly 
raised as a rather thick flaky reticulum with a sharp median edge. Down their sides the 
flakiness gradually increases, the raised median portion becomes a row of frosted crystalline 
granules, which almost disappear, until the top of the flat wall consists of long, crisp flakes, 
with rounded tongues and points frosted at their edges and tips. The septa, except at the 
growing tips of the stock, which consist of a delicate flaky reticulum, very soon greatly thicken. 
They are short, and set with broad bases (? the homologues of the septal granules) on the wall. 
The ring of pali, which are usually complete (cf. formula B, fig. 3, p.19), is large, and rises to the 
level of the wall, but owing to the raggedness of the wall flakes there is no clear ring furrow 
running between it and the wall. There is a central tubercle rising from a fairly symmetrical 
columellar tangle; skeletal bars seem to radiate from the tubercle to the pali, but rather deep 
down. 
The section of a process shows a very loose porous texture; the trabecule, though more 
conspicuously symmetrical, are not better developed than the horizontal elements which form 
the flakes. 
The colour of the unbleached coral is a stony grey-brown. 
The coral seems to be very nearly related to that described below as Great Barrier Reef 24, 
from Thursday Island; the growth-form is so like that I am inclined to believe there may 
be some mistake in the labels, and that they came from the same place (see further remarks 
on p. 128). 
There are two specimens, one (a) a large, nearly complete cluster from “ Kelly’s reef,” and 
a fragment (6) which fits on to a fracture of a; this latter is labelled “Warrior Island.” 
Mr. Pace informs me that in both Warrior Island and Thursday Island many spots are called 
after a celebrated diver of the name of Kelly. 
Here again we have the horizontal-elements of the reticular skeleton developed as flakes. 
a, A nearly complete stock. Zool. Dept. 92. 12. 1. 143. 
b. A fragment of a. Zool. Dept. 92. 12. 1. 276. 
