Pe 
252 FOSSILS FROM THE PALHOZOIC ROCKS OF N.S. W. 
concavely-curved ridges or costze, which are so disposed that if 
followed in a vertical line from whirl to whirl, assume a zigzag 
appearance, and are separated from one another by interspaces of 
at least three times their own width. 
Obs. The presence of the “ Gilbertson Collection” in the British 
Museum, wherein the type specimen of Phillips’ Loaonema 
only difference I am able to detect consists in the 
raarees more slender form of the Australian variety ; ; the type 
whirl just below the suture and in the characteristic ornamentation. 
n the former point both shells agree with Loxonema cons 
Martin, but otherwise differ. They also resemble L. Lefeboret 
(De Koninck) to some extent, but in the latter the striz or coste 
are very much finer, more numerous, and less bent. f Hall 
i sautheds some time ago and has lately figured several shells from 
the Devonian rocks of North America, which pele a striking 
resemblance to the British and ‘Australia: forms, 
the latter. Loxonema pexata (Hall)' is, indeed, baat lol allied 
to our shell, whilst L. terebra (Hall)? although h generally 
it, is too coarsely ribbed. Again, LZ. delphicola (Hall)’ 1s, oT 
a more slender shell, almost equally near ours as 
forme 0 occur Eecmmecersr in the Leper: Helderberg Hamilton, a 
Chem of the North American Devonian, whilst 
pci (Phill), ), is in England a varboutaats limestone e species 
or the present, it appears to me that the most correct yy 
for the Australian shell will be to the latter, more especially “9 
have been able to make a direct comparison. They differ ope 
T can see) only in the Australian form having a little less 
aspect, and in possessing somewhat coarser ribs. 
Loc.—Bungaralaby Creek, west side of Lake Bathurst. 
In addition to the foregoing univalves there are some other : 
but all in such a sad state of preservation that it is i cy 2 
atttempt an accurate determination. best of these 
internal cast, probably that of tenes subeancellata ted 
from Black Head, Illawarra. The second which may be meh” 
valve, having 
much waterworn example ae a very large ete robability 
somewhat the appearance of a Maclwrea, but is er oe 
a depr Euomphalus bie 
_ Loe. i geacohianced Creek, west af Lake Bathurst, in a dar 
g>' Pal, N. Ae vol. v, atlas, t. 13, f. 17 and 18. 
and 7, 
2 Ibid., 
9 Ibid., t 13, f. 10-5, 
