142 MADREPORARIA. 
knobs, the smooth lamellate reticulum appears in which the calicles open almost free of all 
crispness, echinulation or granulation. 
The colour of the unbleached coral is brown. 
There is one specimen. The presence of the worm-tube running regularly up the axis of the 
column is interesting. It is impossible to say whether this is a normal symbiosis or purely 
accidental, and if the latter, how many of the characters of the coral are due to the presence of 
the worm, or what the coral without the worm would be like. There is a distinct resemblance 
of the calicles to those of P. Great Barrier Reef 32, which, as noted, was much infested with 
foreign organisms, and it is quite possible that this is simply an outgrowth of that form 
encrusting a long worm-tube. 
a. Zool. Dept. 92. 12. 1. 547. 
133. Porites Great Barrier Reef (4240. (P. Queenslandie quadragesima.) 
(RIPSXaV Alii tiore (cee Eexexentionss) 
[Great Barrier Reef, coll. W. Saville-Kent; British Museum. ] 
Description.—The corallum, swelling above its base, rises into what appears to be an 
irregular cluster of fused moniliform columns, although there are no free columns at all, but 
rather flabellate plates, with upper edges and sides broken up into knobs or nodules of different 
sizes, from under 1 cm. in diameter to 2 cm. long and 1°5 cm. broad, often pointed at their 
tips or ovate ; the living layer is 9 cm. deep. 
The calicles are of all sizes, up to 1 mm., without definite shape, shallow-depressed, 
except on the tips of knobs, where they are deeper and funnel-shaped. The walls are irregular, 
simple, very thin, sharp and tall on the tips of the knobs, but elsewhere thicker and frosted, 
and looking as if composed of stout, narrow flakes immediately below the straight frosted edge. 
They may form a shelf, sometimes with pores in it, so as to suggest an inner synapticular wall. 
These flakes are the bases of the septa, which are short, stout, bent, and crisp. The pali form 
a very irregular ring of crisp rods of different sizes, that in the dorsal directive is often absent, 
and those of the triplet are usually separate and variously developed. 
The columellar tubercle is small and deep down, as an axial strand of the ring-like 
columellar tangle and attached to the ring by radial bars. 
The section shows trabecule far apart and so irregular as frequently to be incomplete, that 
is, they may suddenly bend on one side and end. 
The colour of the unbleached coral is a brown, suffused at the tips with pink, over all the 
rest with a rich green. This green persists beneath the surface, as is seen in the section even 
of the bleached parts. 
This coral reminds one in its colouring of the forms P. Great Barrier Reef 4, from 
Capricorn Islands, 6 from Palm Island, and 16 from Rocky Island, with which it may be 
profitably compared. I can, however, discover, no special point of similarity with any one 
of these in particular, which would lead me to suggest a more definite locality for this coral. 
a. Zool. Dept. 92. 12. 1. 577 
