Tertiary.] PALZONTOLOGY OF VICTORIA. (Mollusca, 
This is the largest of all our Tertiary Brachiopoda, and is quite 
unlike any living or Tertiary forms at present known, the shape of 
the large valve reminding us of that of the lower Oolitic Terebra- 
tula sub-Bentleyi. 
I transfer to this species now the specific name which I formerly 
used for the species recently figured and described under the name 
W. Gambierensis by Mr. Etheridge, as the two species are found 
together in the chief localities, and there can be no geological 
difficulty in continuing the use of a name frequently referred to as 
a MSS. species for some years ; but I mention the change now as 
some specimens of the former type sent to various Exhibitions may 
still have this name in collections. 
Abundant in the Miocene Tertiary sands of Corio Bay, Geelong 
(A‘15); also at (A* 24) Bird Rock ; in similar beds of Jan Juc ; in 
similar beds (F* 26) more rare at Muddy Creek ; common in similar 
beds at A‘ 26. 
EXPLANATION OF FIGURES. 
Plate XLIII.—Fig 1, unusually long and narrow specimen, entering valve, natural size. 
Fig. la, front view, showing the disproportion of the large receiving with the entering valve, 
with the form of the sinus in the margin of same specimen. Fig. 16, receiving valve of same 
specimen. Fig. Ic, profile of same specimen, but in this view the entering valve appears too 
deep from being viewed obliquely, Fig. 2, large unusually wide specimen, natural size. Fig. 2a, 
pores of surface magnified. Fig. 3, thickened interior of entering valve, with septum, 
Piatt XLIII., Fias. 4 ann 6. 
WALDHEIMIA MACROPORA (McCoy). 
DescripTion.— Ovato-subpentagonal, greatest width varying from a little 
before to a little behind the middle; both valves moderately convex, receiving valve 
most so; lateral margins nearly in one plane with the middle of the front margin, 
but raised towards the receiving valve by a large intermediate angular sinus on each 
side. Receiving valve with a nearly regular convex longitudinal profile, greatest 
depth a little behind the middle, trom whence the curve is a little more sudden to the 
beak, which is moderately prominent with bluntly rounded sides; foramen moderately 
large, with a tripartite deltidium, the middle portion of which is narrow and more 
convex than the lateral ones ; two strong prominent, obtusely angular or rounded 
ridges extend from the beak to the front margin, which is raised on each side into a 
Jarge angular sinus at their ends; between these two ridges the surface is flattened 
or hollowed to the general level of the sides, which slone to the lateral margins with 
very slight convexity ; there are usually three ridges, simple or branched, between 
the two larger bounding the middle space; sides with six or seven obtusely angular 
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