AND DESCRIPTION OF A NEW SPECIES OF AUCELLA. 89 
viated descriptions! being unaccompanied by figures. One o 
Prof. Liversidge’s specimens is apparently J. Marat 18, 
Etheridge,” at least, my father believes it to be identical with the 
ies so 
River, and no great distance from the Flinders River waters. 
e second, ZJnoceramus, approaches the ordinary cretaceous 
species J. problematicus, @’Orbigny, or J. striatus, Mantell, but is 
more deltoid. From the same locality as the last. 
In the same blocks with these Znocerami is a well-marked 
bivalve possessing the characters of Avcella, Keyserling, as laid 
down by the latter and the late Mr. Stoliczka,* and of which a 
more detailed account is given below. The Monotis-like bivalve 
need not be referred to further than to say that, except the partial 
outline of the shells and the radiating fine ridges, no other 
characters are distinguishable. 
Passing to the Cephalopoda, we have, first, the remains of a 
large shell, a portion o 
In the same blocks of stone with the Jnocerami and the Aucella 
are two other well-marked Cephalopods. The first of these 
corresponds in every way with Prof. M‘Coy’s description of 
e remarks 
Sides, as described by MCoy, and with a row of large, much 
compressed tubercles on the sides of the back. The section of 
our specimen is elliptical, but unfortunately that of 4. Flinderst 
‘Snot given by M‘Coy. Loc.—Landesborough Cree 
The last specimen to be referred to is only a fragment. It 
may be only a small Ancyloceras, or a portion of a Hamites. The 
ee eee 
' Trans. R, § : se 
2 . oc. Vict., 1866, vii, p. 50. 
Quart. Jour Geol. Soc., xxviii, a 343, t. 22, f. 1. 
* Quart ora a 390. : 
5 ,uatt. Jour. Geol. Soc., xxvi, 1870, p. 257, t. 15. f. 3. 
Annals Nat Hist. 1867, xix, p. 356. 
