93 
and short, blunt spines, forty- five to fifty in number, and all of one order. 
Some of the corallites were also connected by large fistula) ; another very 
striking feature lies in the complete and, at times, widely separated tabula). 
Some aspects of the growth of this coral recall the structure of 
T. wellingtonensis, but, on the other hand, the corallites of the latter are not, 
so far as known, a^srresmted into masses. The tendency of the calico to 
expand reminds us of the appearance of T. liliiformis. Tor the present, the 
identity of this coral must remain in abeyance. 
Locality . — Geurie, near Wellington, County Lincoln (TP. Anderson 
and P. T. Hammond — Mining and Geological Museum). 
Tryplasma (?) Murrayi, Eth.fil. 
(Plate XXVIII.) 
Tryplasma 3Lurrayi, Eth. fil., Geol. Survey Viet. Progress Eeporfc, No. XI, 1S99, p. 32, 
t. A., f. 1-3. 
Specific Characters. — Corallum consisting of bundles or bunches of 
corallites, the precise ultimate growth unknown. Corallites of vigorous 
growth, long (up to four inches), cylindrical, straight, or a little curved, 
often partially united externally by their walls, and with a maximum 
diameter of half an inch. Wall much thickened by secondary deposit. 
Epitheca delicate, the lines very close and wavy. Eistulse and radiciform 
processes not observed. Bourrelets irregularly developed, rendering the 
corallite surfaces uneven. Bugse flat, separated by grooves indicating the 
peripheral ends of the septal lamella). Calices deep and straight-walled 
Septal lamella) very numerous, about fifty, narrow, apparently of one order 
only ; septal spines very numerous, short, and stout. Special endothecal 
tissue present as one or two cycles of dissepimental cells. Tabulae unknown. 
Gemmation apparently calicinal, in single buds. 
Observations . — Through the courtesy of the Secretary for Mines and 
Water Supply, Melbourne, I have been able to restudy the type specimens 
of this species, supplemented by additional material. Prof. W. Baldwin 
Spencer, Director of the National Museum, has also sent me a fine example 
from Waratah Bay. The result of this re-examination is the foregoing 
amended description, but even this is imperfect from the fact that through 
the absence of sections prepared for the microscope I am unable to study 
several important points of structure. 
