278 
Ebetdesma coedatAj Morris. 
Isocardia ? sp., J. de C. Sby., Mitchell’s Three Expeds. Int. E. Austr., 183S, i., p. 1C, t. 2 [3], f. 1 and 2. 
Eurydesma cordata, Morris, Strzelechi’s Phys. Dcscrip. N. S. Wales, &c., 1846, p. 276, t. 12. 
„ ,, Dana, Geology Wilkes’ U. S. Explor. Exped., 1849, Vol. x., p. 700. 
Ols. Several large and small shells from the Tatton Gold Field may be referred 
to this species, both from their massive shells and strong thick hinges, but they are too 
much weather-worn for general description. Dana mentions that in the half-broken-off 
beak of one valve “ there is a tubular cavity, filled with rock, coming up obliquely from 
between the beaks, and passing out anteriorly, and this cavity is probably the byssiferous 
channel.” A similar passage is visible in one of our specimens. 
Log. and Horizon. Yatton {B. L. Jack and H. H. Burrowes — Mining and Geo- 
logical Museum, Sydney) — Gympie Beds. 
Eueydesma sacculus, McCoy. 
Pachydomus sacculus, McCoy, Ann. and Mag. Nat. Hist., 1847, xx., p. 301, t. 14, f. 5. 
Eurydesma sacculus, Dana, Geology Wilkes’ U. S. Explor. Exped., Vol. x., 1849, p. 700, Atlas, t. 7, f. 8a-c. 
Obs. Several badly preserved examples are probably referable to this species. 
One in particular shows the characteristic satchel-shaped outline, and the short posterior 
compressed wing. The shell substance is very foliaceous, and it appears to have been 
a much less robust shell than B. cordata, Morris. 
Log. and Horizon. Tatton (JV. H. Burrowes ; Mining aud Geological Museum, 
Sydney) — Gympie Beds. 
Order— YEN ERACEA. 
Family— CAEDIID^. 
Q-enus — CON OCABDITIM, Broun, 1835. 
(Lethaea Geognostica, 1, p. 91). 
CONOCAEDITIM AUSTEALE, McCoy, PI. 14, fig. 6. 
Pleuororhynehus australis, McCoy, Ann. and Mag. Nat. Hist., 1847, xx., p. 30, t. 16, {. 4. 
Conocardium australe, Etheridge fil.. Cat. Australian Foss., 1878, p. 68 {for synemymy.) 
Ohs. The Gympie Beds have yielded a single example of a Conocardium,\wgev than 
Prof. McCoy’s figure, but resembling his species in outline and appearance, except that 
the two diverging impressed lines on the shorter end of the shell are not visible. The 
difference in the strength of the striie on the portions which would be bounded by these 
impressed lines is, however, quite apj)arent, and as described by McCoy. The carina of 
O. australe has a peculiar curve characteristic of the species. 
Log. and Horizon. Gympie (i2. L. Jack) — Gympie Beds. 
Order— MYACEA. 
Fam%— ANATINID^. 
Genus— GHHiNOMYA, F. B. Meek, 1866. 
(Pal. Up. Missouri, Pt. i., p. 42.)* 
Ohs. The following species are provisionally referred to this genus, pending a 
detailed examination of allied forms from the Marine Series of the New South Wales 
Permo-Carboniferous rocks. It has been pointed out by Dr. Paul Fischer, t that the 
* Smithsonian Contributions to Knowledge, 1866, Vol. xiv.. No. 172. 
+ Man. Conchyl. et de Pal. Conchyl., 1877i p. 1167. 
