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BIHANG; TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0O 53. 0) 
Bull. de la Soc. Imp. des Naturalistes de Moscou, T. 38, 
1865, p. 4, T. 1, f£. 2, 3) has the: beaks more acute, curved 
and prominent, the shell posteriorly expanded. 
I have had no opportunity to see descriptions and figures 
of all the numerous Inoceramus species from N. America, which 
are cited in the literature; among the species with which I 
have had occasion to compare the Queensland specimens, I. 
problematicus (Report of U. 5. Geol. Survey of the Territories, 
vol. 9, MEEK Report on the Imvertebrate Cretaceous and Ter- 
tiary Fossils of the Upper Missouri Country, p. 62, T. 9, f. 3) 
has the beaks less prominent, the anterior margin more curved, 
the hinge margin forming an angle with the posterior one. I. 
altus (MEEK 1-e.; p. 43, T14, fig:/1; ? =1I Crippsi Mant.) is 
broader and more circular with longer hinge margin produced 
in a small wing, angle between the hinge- and the posterior 
margins, the anterior part thick. The Queensland form seems 
not to resemble any other american species, with which I 
have had the opportunity of comparing it, just as little as the 
Inoceramus from Greenland, described by P. pE Lorior (Med- 
delelser om Grönland, 5:te Hefte). Among the indian species 
I. simplex (StonriczKA: Cret. Fauna of Southern India, ser. 6, 
The Pelecypoda, p. 408, T. 28, f. 3, 4) is broader and more 
circular, the anterior margin straight and not so thin. Al- 
though the Queensland form resembles in many respects I. 
simplex, the differences between them are sufficient to prove 
the former a distinct species. The only Inoceramus from New 
Zeeland, I. Haasti Zittel (Reise der Österreichischen Fregatte 
Novara um die Erde 1857—59. Geologischer Theil, 2 B., p. 33, 
T. 8, f. 5) is quite a different form. 
Six species of Inoceramus have already been described 
from Australia and figures are given of 4 of them. 1865 M'cor 
(Transactions of the Royal Soc. of Victoria, vol. 7, p. 50) de- 
seribed briefly 2 species from Walkers Table Mountains, lat. 
21” 13, long. 143”, but without figures. I. Carsoni is compared 
with I. labiatus, differing from this species in having longer 
hinge margin and the posterior margins rounded. Intheserespects 
there exists a certain resemblance between the above described 
form and I Carsoni, but M'cor states that the fibrous shell- 
layer of I. Carsoni has a thickness of nearly !/, inch (about 7 
mm.). The second species I. Sutherlandi M'cor is compared 
with I. Cuvieri from which it is said to differ by a more slen- 
