QUEENSLAND INOCERAMI—WHITEHOUSE, 129 
the antero-dorsal margin for the hinge line, thereby con- 
fusing the terms left and right, and posterior and anterior. 
The description is thus very misleading; and the figure 
accompanying it, being orientated according to this error, 
gives a mistaken idea of the shell. It has therefore been 
necessary to redeseribe it here. Lundgren’s figure was of 
the left valve, and should be turned (in an anti-clockwise 
direction) through an angle of 80° for correct orientation. 
The right valve has been figured in this paper. 
No specific name was given in the original description, 
but Lumholz* reprinted Lundgren’s plate in his book, and 
labelled it Inoceramus maxrimus, which name was adopted 
by Etheridge Jr.,t and has been retained here. Etheridge 
endeavoured to identify specimens with this species relying 
on Lundgren’s work, but owing to the original mistakes 
referred to above such identifications cannot be maintained. 
INOCERAMUS SCUTULATUS sp. nov. 
GE Vi ashe elope Wile sre) 
Sp. Chars.—Shell inequilateral with a lozenge-shaped 
outline modified somewhat by the rounding of the angles. 
Height slightly greater than length. Hinge line very short, 
about a quarter length of the shell. Shell expanded almost 
equally on either side of the axis of growth. Umbones 
acute, terminal, and prominent. Pallial area sac-shaped, 
lunate, occupying about a quarter of the internal surface. 
Shell substance extremely thin, ornamented by concentric 
ribs which are not very prominent. Axis of growth at right 
angles to the hinge line, and with a slight tendency to curve 
towards the posterior. Ligament pits small. 
Obs.—This species is distinguished by its lozenge- 
shaped outline and the sub-equal anterior and posterior 
expansions. 
INOCERAMUS SCUTULATUS var. 
CRI, Ve fie 2 spl. View ties. 2) and 3.) 
There are a number of forms, three of which are figured 
here, which, while differing among themselves, lie on a line 
of variation linking the two species J. scutulatus and J. 
> TLumholz: ‘‘ Among Cannibals’? (London), p. 367. 
*R. Etheridge, Jr.: Geol. Surv. Q’land. Bull., 13, 1901, pp. 24-25. 
Bass Ke 
