76] 
RECOliDS OF ir..i, MUSEUM. 
Dorsal valve: the cardinal area is rather narrow, cardinal 
process small, flattened and vertically striated, cardinal sockets 
long, grooved above, expanded distally. Denticles not observed. 
Dimensions of the shell, 37mm. by 103mm. 
The 5 . lata ? of Etheridge’ has a costate sinus, acutely 
extended and nearly smooth alations, which differ in several details 
from the shell under consideration. The sinus broadens much 
more rapidly and is less distinct, the alar angles are more acute, 
the beak is much more prominent, and the ribs lack the tendency 
to group them.selves in bundles. 
The fold of the dorsal valve is not grooved as in the 5 . lata 
from the Queensland Permo-Carboniferous,^ which shell also 
possesses plain sulcus and median fold, as well as stronger ribs. 
The shell differs from .S', latus (McCoy) in having fold and 
sulcus ribbed, in the number of ribs on each valve, and in possess- 
ing a cardinal area transversely concave. 
5 . convolnlHS (Phillips) differs from the new species in the 
nature and extent of the ribbing, and in possessing much more 
attenuated (acute) alar angles. 
5 . mnsaliheylensis v. australis (Foot'd), when young, is an alate 
form with ribs arranged in bundles, but its costation ismuch finer and 
the wings are not smooth ; it also has a much more prominent beak. 
There are five specimens (Nos. 1650-1654) in the collection. 
'I'he two shells chosen as types (Nos. 1650 and 1651) show the 
features described above. 
GASTEROPODA PTEKOPODA. 
Genus Coniihiria. 
Conulayio, sp. nov. (?) 
c. f. C. Warthi .. Waagen, Pal. Ind., Series XIII., Salt Range Fossils, 
Vol. IV., p. 126, plate IV., fig. 6, plate v., fig. i 
(1889-1891 ). 
CON U LARI A, sp. nov. 
Three crushed fragments on a piece of ironstone (No. 1660) 
present the following features: — 
Elongated pyramidal .shell, quadrangular ; faces sub-equal (?), 
almost flat, slightly grooved in the middle, apical angle unknown, 
I Loc cit. 
Jack and Etheridge. Get)!, and Pal., Queensl., p. 229, 1892. 
