483 
Pl. 24, Pig. 1. — In fhis figure is represented a much compressed right valve of 
a 3Iaccoyella-\\kQ bivalve. There ai’e no traces of radiating eostse, but in their place 
strong concentric lines and laminoe. The dorsal margin was clearly straight, the 
anterior end much cut out and projecting ventrally, the ventral margin very regularly 
rounded, and the healc small and depressed. The shell structure is that of i/Laccoyella. 
hoc. Plinders Eiver, three miles above Eichmond Downs Station {B. L. JacTc). 
Pl. 26, Pig. 13-15.* — It has been found impossible so far to identify the genus 
of this shell, notwithstanding that it has been very carefully considered both by 
Prof. E. Tate, Mr. J. Brazier, and myself, owing to our want of knowledge of the 
pallial line aud the hingo-strueture of the right valve. The shell is obliquely 
trigonal, tumid in the umbonal region, the posterior end small and rather acumi- 
nate. The hinge or cardinal margin is strongly angulated, descending i-apidly on 
the posterior side, but less so ou the anterior. The ventral and anterior margins 
are rounded; body of the shell gibbous, and somewhat inflated, with well incurved 
umbones. The shell possesses an inconspicuous aud not well defined lunule, aud there 
is no defined siphonal ridge. The ligament was external. The dental characters, so 
far as known, in the left valve are very marked, consisting of a large projecting 
somewhat triangular cardinal tooth with a deep socket immediately on its posterior 
side, and an elongated lateral tooth. It may be a Unicardiwn. The only shell 
described by Moore which could have any relation to this species is his Astarte 
ivollumbinwnsis, but the figure being only a partial one is quite useless for comparison. 
Loo. Upper Plinders Eiver (Zfoi. 4. 0. 
Pn. 26, Pigs. 11 and 12. — A cytheriform shell, the valves united and much 
decorticated, several layers having flaked off. The hinge is not visible, but there 
appears to have been a lunule and an escutcheon. The outline of the valves would 
indicate a genus near Cytlierea or one of its allies. There is some resemblance to Cytherea 
(?) Rudlesloni (PI. 28, fig. 12). 
Loo. Evora Station, twenty-five miles north-east of Blackall (/f. Morrisly). 
Class — Gasteropoda. 
Order-SOLENOCHONCHiE, 
Pamily— DENTALIIDiE. 
Qemis—BRNTALIUM, Linnmus, 1740. 
(Syat. Nat., Ed. 2, p. 61.) 
DeNTAUIUM WOLUrMBIlUiENSIS, sp. nov. 
I^entalium Uneatum, Moore, Quart. .Tourn. Geol. Soo., 1870, xxvi., 2, p. 256 [non. Gueranger). 
Sp. Char. Shell tubular, rather thin, tapering and slightly curved. {Moore.) 
Ohs. Three specimens were observed by Mr. Moore in his Queensland series of 
fossils. According to Stoliczka,t the name D. lineahm was preoccupied at the tune Mr. 
Moore wrote by G-ueranger, whose species appears to he a good one. 1 have, therefore, 
altered the name of the Australian shell as above. 
Prof. E. Tate refers X Moore’s species to Bentaliim arcotinim, Forbes, but I have 
not observed the same amount of curvature in the Australian shell as exists in the Indian. 
Our species is also shining and smooth. 
Loo. Wollumbilla {The late Rev. W. B. OlarJee) ; Glanmire Block, seventeen 
niilcs south-west of Tambo {Mr. Goffage). 
* See also p. 39 ( Unicardiuni Meeki). 
t Pal. Indica (Orel. Fauna), 1868, ii., Pts. 7-10, p. 443. 
X Proc. Austr. Assoc. Adv. Sci. for 1888 [1889], i., p. 230. 
