254 
Genus — PLEUE/OTOMARIA, Defrance. 
Pleueotomahia Moerisiana, jP. McCoy. 
PL XXIir, Pig. 12. 
Pleurotomaria Morrisiana, P. McCoy, 1847, Ann. Mag. Xat. Hist., XX, p. 306, pi. 17, 
fig. 5. 
5 , ,, J. H. Dana, 1849, Greol. Wilkes’ TJ. S. Explor. Exped., p. 706, 
pi. 9, fig. 15 (fig. 16 exclusa). 
This shell is conical, a little longer than broad, makes four or five 
convex spiral whorls, and is furnished with a projecting double keel, limiting 
the hand of the sinus. Its suture is rather deep, and placed immediately 
under the keel. The rest of the surface is ornamented with oblique lines of 
growth. The aj)erture is sub-circular, and there is no umbilicus. 
Dimensions. — The length is seven, and breadth five, millimetres ; the 
apical angle is about 60°. 
Relations and Differences . — By its surface ornamentation this species 
resembles my P. Galeottiana ; it differs from it by the convexity of its 
whorls and its more rounded aperture. I am convinced that Dana has con- 
fused two distinct species under the name P. Morrisiana, and that the 
specimens he has figured (Pig. 16, PI. 9) are specifically, or even generically, 
different from those represented on Pig. 15, PI. 9. It is easily seen that 
their ornamentation and spiral angles are too unlike to admit of their being 
the same species. 
Horizon and Localities. — This small species appears to be abundant 
in the limestone near Munnawarra (Black Head). McCoy says it is found 
in the Muree Sandstone. 
Pleurotomaeia subcancellata, J. Morris. 
PI. XXIII, Eig. 15. 
Rleurotomaria subcancellata, J. Morris, 1845, iu Strzelecki’s Phys. Descr. N. S. Wales 
and V. D. Land, p. 288, pi. 18, fig. 6. 
,, ,, McCoy, 1847, Ann. Mag. Xat. Hist., XX, p. 305. 
This shell, of relatively large size, is conical, and consists of six spiral 
whorls ; the lower part of the spire is depressed, and the depression gives rise 
