206 
The dendroid corailnm was evidently of some size, as a specimen has been 
observed three inches in length. The corallites radiate from an imaginary axis, and are 
Ihin-walled in the axial region, but very much thicitened in the peripheral zone, whic ns 
short, and nearly at right angles to the former. The calicos are round, or at times have 
a tendency to become oval. The thickening of the walls w very uniform and regu a , 
the nrimordial wall occasionally being visible as an indistinct thin white line. ri 
llke thickenings in the walls have not been observed, but this feature very much depends 
on preservation; whilst acanthopores are visible in a tangential section, irregularly 
distributed, and each with a central papilla. The structure of the walls is, as usual lu 
these corals, laminar, the lamimo directed couvexly upwards. There are no pores, and 
tabulm have not been observed. , n „ 
So w'ell do the respective measurements of S. JacTcii and the present coral agree, 
that I should have unhesitatingly referred the latter to the formj had it not been tor 
the total absence of tubular constrictions in this species. The difiereiiees observable 
the figures of the two forms are more apparent than real. ^ 
At present my investigations have not satisfactorily demonstrated to what section 
of the larger genus Montimdipora this fossil should be referred ; but without 
into the question -of the value of OrUpora as a genus, as lately defined by Mcssis^ 
Waageii and Wentzel,* the latter would seem to be a fitting temporaiy resting-place t 
As its provisional distinctness from S. JacMi seems warranted by the structure, so 
as at present known, a name is desirable, and I would provisionally propose to ca 1 it 
OrUpora? Waageni, as a slight appreciation of the valuable services renuered to 
Paleontology by Dr. W. Waagen, late of the Indian Geological Survey. 
Loc and Horizon. Kooiiigal, near Gladstone {^The late James ^i;MfA)-Gympie 
Beds. ^ 
Stknopoea gimpiensis, sp. nov., PI. 6, figs. 14 and lo. 
Stenopora ? sp., Nicholson and Eth. 111., Ann. and Mag. Nat. Hist., 1S79, iv., p. 276. 
Sp Char Coralliim ramose, the branches from two to five lines in diameter, 
diverging from a main stem obliquely, or at right angles the terumml portions always 
hifurcatincr and the apices of the branches rounded or lohate. The corallites, '‘^er • 
^ort vertfcal course in the axis of the branches, are ahrnptty deflected nearly a ngh • 
angles ; and after holding this latter course for a space of from half a line to a line 
more, they open by direct apertures upon the surface They ^ro j ; 
constant in size; walls veiy uniformly and regularly thickened, the thickeim. 
increasing in amount as the calicos are approached; structure is almost ei re y 
destroyed, hut the primordial wall is visible at times as a thin broken line ; monilit 
constrictions only visible in weathered specimens, the tubes always exhibiting 
fractured specimens a very delicately and minutely wrinkled appearance. Acantbo 
pores large, but obscure, irregularly arranged, and at times surrounding the calice^- 
Tabiilffl present in the peripheral zone, altliougli very much scattered, and 
horizontal. No pores visible. -n v Art^Enlson 
Ois. This coral was originally referred to Stenopora, by Professor N - 
and the Writer, from general appearance only. We observed that though * ® 
are calcareous, and are themselves permeated by crystalline calcite, their mor ^ 
structures seem to have been destroyed during the process of fossilization and m 
seopic sections fail to show the internal structure in a thoroughly satisfactory m ^ 
* Pal. Indlca (Salt Range Eossils), 1880, Ser. xiii., Vol. i., Pt. 6, p. 877. 
t See Nicholson on the subject of the generic value of OrUpora. (xcnus Monkeuhpora 
Genera,, 1881, pp. 11 and 24. 
