502 
CeIOCeeas, sp. ind., PI. 33, figs. 4, 5, aud 6. 
Ancyloceras or ITmnitcs, Etheridge fil., Journ. R. Soo. N. S. Wales, 1883, xvii., p. 89, 2nd PI., bottom 
l.h. fig. 
Ohs. In 1883 I figured a fragment, provisionally referred to Ancyloceras or 
Samites, but which I now think may be more appropriately referred to Grioceras. The 
ribs are in bundles of two or three, proceeding from a series of single nodes, or tubercles, 
on the flanks, arranged generally in a line along their centres, or coming close down to 
the dorsal (concave) margin. Here and there one of the ribs may be much stronger 
than the others (PI. 33, fig. 4). 
Another specimen has since come to light from the Aramac Well, in which the 
arrangement is similar generally, but slightly different in detail (PI. 33, figs. 5 and 6). 
Here the tubercles are farther apart on the flanks ; the ribs more commonly in bundles 
of two, this subdivision being remarkably well'bhown on the back, where also a double 
row of tubercles is visible. Purther examples of these specimens, which are perhaps 
specifically identical, will be welcome. 
hoc. Landsborough Creek, Thomson Eiver, PI. 33, fig. 4 {Frof. A. Liversidge — 
Colin. Sydney Cniversity) ; Aramac Well, at two hundred and eighty-four feet 
(S'. SJiancood). 
Ceioceeas Edkinsi, sp. nov., PI. 30, figs. 8 aud 9. 
Sp. Char. Shell simple, of apparently not more than two volutions, in a more or 
less oval coil ; section oval ; dorsal and ventral lobes about equal, and much smaller than 
the lateral ; dorsal and ventral saddles each divided into two branches, which bifurcate. 
Surface with equidistant, regular ribs, one becoming larger than the others at intervals, 
separated by equal interspaces; a row of very small tubercles on each side the back. 
Ohs. A small and pretty species of this genus, not exceeding three-quarters of 
an inch in diameter, resembling in the curvature of its shell, the Grioceras irregulare. 
Ten. Woods, but the size precludes any reference to this species. Had only a single 
specimen been present it might have passed for the young of that shell, but as the 
examples are numerous, and constant in their chai’acters, they can only be regarded as 
adult individuals, and as such are certainly new to the Cretaceous rocks of Queensland. 
C. Edkinsi is associated with a number of other shells, such as a small Inoceramus, 
possibly a Nucula, a small crushed Ammonite, of a strongly Qr&At facies, and ca.sts of 
univalves, but the latter not in a good state of preservation. It is allied to, and very 
like Ancyloceras Beyrichii, Karsten,* especially in the simple coiled whorls. 
The name is given in honour of Mr. E. E. Edkins, who presented the specimens 
to the Queensland Geological Survey. 
Loc. Well, seven miles east of Mount Cornish Homestead, near Muttaburra, at 
two hundred and thirty feet below the surface {E. B. Edkins). 
Eamily— NAHTILIDAi. 
Genus — NAUTILUS, Bregnius, 1732. 
(Dissert, de Polythal.) 
Nautilus Heudeesoui, sp. nov. 
Ohs. Fine examples were obtained too late for detailed description, but 
it may be sufficient to say now that they are after the general type of N. eleyans. 
Named in honour of Mr. J. B. Henderson, M.I.C.E., Hydraulic Engineer to the 
Queensland Government, who has presented many fossils to the Geological Survey 
Museum. These will be described later. 
* Geol. I’Anoien. Colombie-Bolivarienne, Venezuela, Nouv.-Grenada et Ecuador, 1886, t. 1, f. tfl. 
