478 
Tanceedia ? sp. ini. 
Tancredia, sp.? Etheridge, Quart. Journ. Geol. Soc., 1872, xxviii., p. 348, t. 25, f. 8. 
Obs. Mr. E. Etheridge, E.E.S., compared this shell to Corbicella hathonica, 
Morris and Lycctt, an indication which appears to be strongly in fiivour of its reference 
to that genus rather than to Tancredia. So far as the mere outline is concerned, it may 
be compared in passing to Macrocallista plana, Moore, sp., and even Mr. Etheridge’s 
Myacites, sp. ; in fact, the figure of the latter and the Tancredia are remarkably alike. 
Loe. Gordon Downs {The late B. Dainiree'). 
Older— TELLINACEA. 
Eamily— TELLIlSriD^. 
Genus — B ALMOMM'RA, Stoliczka, 1870. 
(Pal. Indica (Cret. I'auna), 1870, iii.. faso. 1-4, p. IIB.) 
PALEOMiEEA ? sp. ind., PI. 2G, fig. 16. 
Obs. A very interesting shell, probably referable either to this genus, or TelUna, 
has come to light through the sinking of the Muttaburra "Well. Only one valve is 
extant, and both tlio extreme ends are destroyed. The valve could only have been 
moderately convex, the posterior slope but little developed. On the other hand, the 
umbo was acute and sharp, small and incurved, whilst fine concentric lines ornamented 
the surface. By prolonging the concentric stria), the length, when perfect, wmuld be 
about an inch and a-quarter. 
The present shell to some extent resembles a Psammobia, although not of the 
typical form. It also reminds one of TelUna oequadis, Gabb.,* of the Californian 
Cretaceous Beds. 
Loo. Bore at Muttaburra {J. B. Henderson) . 
. Genus— GLYCIMBBIS {Klein), Lamarck, 1799. 
Glycimcris (Klein), Lamarck, Mem. Soc. Hist. Nat. Paris, 1799, p. 83 [nmi Lamarck, 1801, Syst. Anim. 
sans Vertdb, p. 120 = Cyrtodaria, Daudin]. 
Fanopcca, Mdnard de la Groye, Ann. Museum Hist. Nat. Paris, 1807, ix., p. 135. 
Obs. Observations on this genus will be found under the head of “ Desert 
Sandstone,” to which the reader is referred. 
Gltcimeets ettgosa, Moore, sp., PI. 28, figs. 4 and 5, ? fig. 6. 
Panopwa ruyosa, Moore, Quart. Journ. Geol. Soc., 1870, xxvi., p. 233, t. 13, f. 7. 
Myacites? australis, Iludleaton, Geol. Mag., 1884, i., p. 340, t. 11, f. 9. 
Sp. Char. Shell transversely ovate, anteriorly inflated, very convex or gibbous 
in the umbonal or visceral region. Dors.al margin straight (with a raised ridge for 
ligameiitary attachment, Moore) ; ventral margin rounded at the ends, almost straight 
in the centre. Anterior end closed, somewhat produced, with a sub-truncate margin 
and an anterior slope rather augulated from the umbones forward; posterior end 
rounded, more or less g.aijing along the posterior dorsal margin. Dmbones incurved, 
acute {Moore), depressed or fl.attened from above. Pallial sinus very deep and 
moderately wide ; anterior muscular impressions faint, posterior w^ell marked. Surface 
with irregular, rough, concentric rug®, stronger on the anterior end, with an epidermal 
covering of anastomosing fibres. 
Pal. California, 1809, ii., p. 182, t. 29, f. 73. 
