112 MADREPORARIA. 
room to grow. Each process is apparently due to the fusion or forking of flattened, long oval 
knobs, which range from 1 to 1°8 cm. long and from 0°8 cm. to 1°5 cm. broad. Where there 
is little room, the knobs form small bunches with rounded or flattened stalks; the lower edge is 
closely adherent. 
The calicles are irregular in size, inclined to be large, 1:25 mm., open, angular, not deep, 
with small groups of three and four surging up as the beginnings of knob formation. The walls 
tend to be rather tall, and then often membranous, with ragged edges showing traces of trabecule. 
The inside of the calicle is almost equally ragged; the septa come from the wall at different 
heights, being thick and sometimes flaky near the wall, with irregular development of septal 
granules. The pali form a large irregular ring of tall, bluntly tapering and roughened rods; the 
complete formula (eight) is common. A small tubercle rises in the centre. The calicles are con- 
spicuous because the interseptal loculi and the fossa are open, and run freely into one another 
except where the septa are fused. 
The section shows stout irregular trabeculae, very loosely arranged, and far apart. 
The colour of the unbleached coral is a light brown tinged with pink at the growing tips, 
and with olive-green near the base. 
This coral clearly belongs to the series of forms with which we are now dealing and leads 
on to the next. 
a. Zool. Dept. 92. 12. 1. 344. 
98. Porites Great Barrier Reef (495. (P. Queenslandie quinta.) 
(CAE DA erites 8 IAL D0 0.6 biter, 8))) 
[Capricorn Islands, coll. W. Saville-Kent; British Museum. ] 
Description.—The colony forms a small encrusting cap to the accumulations of previous 
growths, which progressively enlarge above the base. The edge is often free, and turned outwards 
for a few millimetres, and is then sharp (under 1 mm.) with prominent epitheca. The stock rises 
into a thick cluster of slightly compressed fusiform and angular lobes, swollen out above their 
bases, but pointed or crested at their tips. 
The calicles are densely crowded, very deep, open, steeply funnel-shaped, angular, and 
irregular, being at all levels, one rising above the other. The largest are about 1 mm., and inter- 
spersed with young buds forming in the angles. The walls are uniform over the whole stock, 
and consist of simple rows of stout, long trabecule, making the edge a row of smooth, rounded 
granules ; the steep sides are ribbed by the trabecule. The septa, and all the ordinary elements 
of the intra-calicular skeleton, are aborted or else quite obscured, deep down in the base of the 
calicle. Only the tall stout pali are visible some distance below the tops of the walls, and quite 
free from them. Usually only the four principal pali appear, but there are sometimes fewer. 
Here and there directives may be found, which may be either in contact with the wall, or with a 
