a 
Bibliography. 451k 
by M. Dumont of Liege; various charts published under the French 
government of the South of France, parts of the Pacific, &c.; the 
Military Map of France, 149 maps of which are completed out of 258, 
a survey begun in 1818 and to be completed in 1855, the annual ex- 
pense being about £30,000 per year ; a fine map of Greece in 30 sheets, 
by Col. Peytier of the French Expedition in the Morea. 
- Some explorations in South America are also alluded to; the Indian 
researches by Dr. J. D. Hooker, and Capt. Strachey ; Craufurd’s Memoir 
on the Geography and Statistics of Borneo; Carter’s account of a por- 
tion of the Arabian Coast with its Geology, in the Journal of the Bom- 
say Branch of the Royal Asiatic Society for 1851 and 1852; Explora- 
tions in Africa of Messrs. Oswell and Livingston, of Mr. Garriott, of 
F. Galton, and the publication of the work in French of Messrs. Ga- 
lunie and Ferret on Abyssinnia in 1841-42. 
The author appears to have been ignorant that any coast surveys, 
or explorations of any kind, were in progress in the United States, 
and alludes only to the extravagant scheme of Whitney for the great 
Rocky Mountain railroad. 
2. On a Fossil Saurian of the New Red Sandstone Formation of 
Pennsylvania, with some account of that Formation. So, on some 
New Fossil Molluscs in the Carboniferous Slates of the Anthracite 
seams of the Wilkesbarre Coal Formation ; by Isaac Lea. (From 
‘the fossil Saurian here described by Mr. Lea occurred in certain lime- 
stone conglomerates in Upper Milford, Lehigh Co., Pennsylvania, 
where they were found by Dr. Shelly. The species is named the Clep- 
sysaurus Pennsylvanicus. The generic name refers to the very remark- 
able compression laterally of the vertebree towards the center. ‘* The 
e s 
ro-posterior diameter 1-2 inches, transverse diameter 0°35 of an inch. 
A centrum 2°1 inches long, had its two diameters 1 inch and 0:3 of an 
inch. ‘These and the other bones are represented on three lithographic 
The new carboniferous molluscs described in this paper are named 
as follows :—Modiola Wyomingensis and minor, Posidonia 2? clathrata, 
perstriata, and distans. * The specimens were from shales brought out 
of a working coal mine above Wilkesbarre, Pa., where they are very 
rarely met with. They were accompanied with scales of fishes, which 
species is named by the author Paleoniscus ? Leidyana. ; 
. the Fossil Footmarks of the Red Sandstone of Pottsville; by 
Isaac Lea, (from the Trans. Amer. Phil. Soc., x.)—These tracks 
have been noticed in this Journal, in vol. ix, 129, 1850, in a brief account 
by Mr. Lea, taken from the Proceedings of the Amer. Phil. Soc. The 
woodcut there given represents the impressions with too much distinct- 
ness, judging from the lithographic plates accompanying the memoir. 
The species is called primavus. The second plate of the 
