498 
In a collection of Australian fossils forwarded to me, when in London, hy Prof. 
Iiiversidge, I identified what was believed to be a large fragment of this species from 
Landshorough Creek. I remarked, “Although only a very small portion of the entire shell, 
it represents an individual of some size, in which the ribs fork on the sides, as described 
by McCoy, 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 M. Ijlindersi 
is not given by McCoy.” 
Additional examples of an Aneyloceras, or Crioeeras, have been obtained from the 
strata of Aramae Well in w'hich some of the ribs do fork, as described by McCoy, 
but not all of them ; and there is a clearly marked row of tubercles along each side. 
The specimens are, therefore, presumed to be A. Flindersi. The following facts are 
gathered from them : — 
The section was egg-shaped, or elongately pyriform, with flat sides, sloping away 
rapidly to the narrow back, the dorsal side being broad. The ribs are close in the young 
state, wddening with age, slightly sigmoid.al on the flanks, where they bifurcate, each rib 
on arriving at the edge of the back being enlarged into a tubercle. These, in the young 
state, are blunt and depressed, but with advanced age becoming more compressed fore 
and aft. In the older shells also, the ribs become less conspicuous in crossing the 
flat narrow back. 
The septa are highly complicated, and much broken up. The siphonal saddle is 
short, whilst the ventral lobes have two chief divisions, or fringes, the outer the longest ; ■ 
the ventral saddles are quadripartite, having two chief subdivisions, separated by a 
lobe, consistiug of a long terminal, and two lateral fringes ; each subdivision is itself 
split into two smaller saddles, aud much jjectinated. The superior lateral lobes are 
very large and long, and occupy as nearly as possible the centre of each flank of the 
shell, the body of each lobe being long and separated into two large forks, each of 
which is again, in its turn, slit into two spreading highly pectinated branches. The 
principal lateral saddle more or less resembles the ventral saddle in its construction ; 
the inferior lateral lobe is long and narrow, terminating in two chief side branches and 
a central prolongation ; the second lateral saddle is rounded aud short, of two divisions 
separated by a lobe somewhat similar to, but smaller than the lobe subdividing the 
ventral saddle. 
The chief point in the septal structure of A. Flindersi is the extreme depth and 
development of the superior lateral lobe and its ramifications. Each lobe occupies a 
large part of the flank, and in full-grown individuals extends over the width of 
four ribs. 
Loc. Base of Walker’s Table Mountain, Blinders Eiver {Messrs. Sutherland and 
Crtrsoji— Colin. ISTational Museum, Melbourne) ; Landsborough Creek, Thomson Eiver 
{Frof.A. Liversidge—CoWu. Sydney University); Aramae Well, at two hundred and 
twenty-four feet, and two hundred aud thirty-eight feet respectively {S. Sharioood). 
Anctlocer.vs Tatiori, sp. nov., PI. 42, fig. 13, 
Sp. Char. Shell small, elongate ; .spire tightly coiled, of about two, or two and 
a-half whorls ; projected limb gradually increasing in size, not placed precisely at right 
angles to the spire, but rather obliquely bent towards it ; “ crozier,” or recurved distal 
end not preserved ; costm simple, without tubercles, becoming more obliquely directed 
as the limb is ascended, rounded, and separated by narrower sulci. 
Ohs. The proximal coil of the shell would indicate Ancyloceras rather than 
S-amites for the reception of this fossil. It may be only the young of some other form, 
