1878.] Geology and Paleontology. 761 
Society of France a specimen of an almost entire lower jaw of an 
Sae species of camel found in a mo deposit in Rou- 
ania. Remains of probably the same species have been found 
pa iiney It belongs to za sbi Pliauchenia (Cope), a form 
hitherto only known as Amer which is intermediate between 
the genus Camelus and the Priced of Leidy. The species was 
rather smaller than the Camelus dromedarius, 
THe FAUNA OF THE Lowest TERTIARY OF France.— Below the 
lignite and argile plastique of Meudon, where the greater number 
of types of the Suessonien Fauna have been oP alin several 
horizons of the Lower Eocene are recognized in France. Immedi- 
ae, below the argile plastique is the conglomerate ‘of Meudon 
d Cerny, and, still lower, the Sables de Bracheux. The latter 
is yi first horizon above the upper bed of cretaceous, or the Pi- 
ONCE, which is perhaps to be parallelized with the Mestrich- 
tie 
Dr r. Lemoine has mie investigated the Mabe ke fauna of 
these beds with much success. I give a brief notice of his dis- 
coveries, which are of ck interest to American i Ra PASA 
in view of the light they throw on the faunz of the corresponding 
periods of the history of our continent. 
In the Sables de Bracheux he finds peculiar Squalodonts, and 
a new species of the genus Myledaphus, thus far only known from 
the Laramie bed of the Judith river A Montana. Also a Cht- 
mera like the Mylognathus of Leidy ar of the genus Castes 
Cope, which is shown to be quite distinct from Lepidostcus in the 
entire maxillary bones, and Lacertilia. - 
e conglomerate, Dr. Lemoine finds Mammalia related to 
Adapis, viz: Lophiocherus copet Lem., and two species of Plesia- 
v.; also two species of Arctocyon and a new genus, 
Pleuraspidotherium. With these occur in abundance, the remains 
of the genus Champsosaurus (Cope Stmedosaurus Gerv.) lemotnet 
Gerv., which is well known as characteristic of the American 
Laramie gro up. oe and alligators are abundant, with 
turtles of the genus Compsemys Leidy. There are numerous 
squalodonts, and a large species of slag ete tie a genus of 
— 
“Amide which first appears in America in the Bridger formation. — 
The greatest number of species were found by Dr. Lemoine in 
the Sables and other beds of the horizon of the Lignite of Meu- — 
don, or nearly that of the Gastornis, the Paleonyctis, and the Cory- 
phodon eocenus. The following names of = of mammalia 
recall the Wasatch and Bridger fauna of America. Phenacodus, 
Hyracotherium, Opisthotomus, ? Hyopsodus, ?  Stypolophes, Miacis, : 
d esiada upis 
Lophiochærus peroni and three s 
Gerv., Orotherium (Cope), PA A ON Lophiodon and one or two 
Artiodactyles. Crocodiles, Ophidia and Lacertilia are more abund- 
ant, with birds and turtles. The genera of the latter are very fa- 
miliar on this side of the Atlantic; Polythorax Cope, a Dermate- _ - 
* 
