467 
MyTILUS INFLITUS, Mooi'c, PI. 25, fig. 11. 
Mytilus inflatus, Moore, Quart. .Tonrn. G-eol. Soo., 1870, xxvi., p. 252, t. 13, f. 4. 
• ,, „ Ten. Woods, Journ. K. Soo. N. S. Wales, 1882 [1883], xvi., p. 153, t. 10, f. 8. 
iSj). Cfhar. Shell smooth, slightly inequivalve, convex, both valves inflated ; 
margins close-set; umhones terminal, acute, anterior; liinge-liue extended and oblique ; 
posterior margin and front rounded ; dorsal surface smooth, with irregular concentric 
bands of growth. (Iloore.) 
Ohs. “ This pretty little shell is to be distinguished by its very inflated appear- 
ance, its more extended hinge-line, and terminal umhones. Its test still retains some 
colour.” {Moore.') 
The specific name of this species was preoccupied by Muller before it was made 
use of by Mr. Moore, but the species described by the former is referable to another 
pre-existing species,* * * § wherefore the name ascribed by Mr. Moore to the Australian shell 
will pi'obably stand. 
The late Bov. J. E. T. Woods believed M. injlatus to be of Oolitic age. There 
IS, however, no absolute reason for considering it as so differing from the other fossils 
with which it is associated. 
Although represented as a longer shell, I think that Air. Hudleston’a Modiola 
hnguloides-f is only a variety of the present species, and I notice that Prof. R. Tate 
places it as a synonym, J and more recently still this is admitted by Mr. Hudleston.§ It 
IS very abundant in the Lake Eyre Beds, and I had an opportunity of examining a large 
series forwarded to the Indian and Colonial Exhibition by Mr. H. T. L. Brown. Mr. 
Tenison Woods’ figure represents a still larger individual, and one posteriorly so much 
more lengthened than Moore’s figure, that I would prefer for the present to withhold a 
conclusive opinion as to its identity. Between the bands of growth the shell is covered 
with very delicate concentric strife. I was indebted to the late Mr. Tenison Woods for 
the loan of his figured specimen. 
Log. Wollumbilla {The late Bev. W. J3. Clarice) ; Palmer River {The late Bev. 
JE. T. Woods). 
Mytilus ix-GEifs, Ten. Woods. 
t^IyUlus ingens, Ten. Woods, Proc. Linn. Soo. N. S. Wales, 1882, vii., Pt. 3, p. 389. 
Sp. Char. Shell oblong, oval or elliptical, tumid, or gibbous in the centre, so as 
to form an arched, broad, regularly sloping cariua, depressed at the anterior side; 
thick, but not clumsy, at the posterior margin ; the whole very equally sulcate with lines 
of growth, the younger ones deep-ridged and with a beautiful curve, the latter less 
distinct. Umhones terminal, small, corroded, curved. Ligamental fossa so mew'hat small, 
broad, terminal, shallow, with a long, narrow slit for the byssus. Pallial impression 
long and wedge-shaped. Length thirty centimetres, breadth nineteen, height seventeen, 
length of hinge depression nine. {Ten. Woods.) 
Ohs. This appears to be a very large species, and distinct from either of those 
described by the late Mr. C. Moore from the Wollumbilla blocks, although in form it 
*^Pproaches If. injlatus, Moore. 
Log. Barcoo District late Bev. J. JS. T. Woods). 
* See Stoliezka, P.al. Indica (Cret. Fauna), 1871, iii., faac. 5-8, p. 373. 
t G-eol. Mag., 1884, i., p.. 341, t. 11, f. G a-h. 
t Proc. Austr. Assoc. Adv. Sci. for 1888 [1889], i., p. 230. 
§ Geol. Mag., 1890, vii. (3), p. 245. 
