F. V. Hayden on the Lignite deposits of the West. 207 
general outline of the leaf is therefore unknown, but the nerva- 
tion which is very close and more like that of a Weuropteris, is 
of a peculiar character, 
Lignite beds near Golden City, Colorado. 
1, Magnolia tenuinervis, sp. Not possible to indicate the 
general form of the leaf of which a part only is presented. Its 
thin and sharp secondary nerves distinguish it from any other fos- 
sil species. 
2. Lathrea arguta, sp.nov. May be a Pecopteris. No relation 
observed of any known species to this one. 
fiaton Pass. Specimens collected by Dr. LeConte. 
1. Berchemia parvifolia, sp. nov. Related to B. multinervis of 
the European Miocene, but still more like tie Berchemia volu- 
bilis which fills the southern s wamps. The basilar part of the 
e Aga seen and therefore a satisfactory determination is not 
int 
2. ‘Abictites dubius, sp. nov. 
Most of the specimens from Raton pass have some remains o 
leaves or branches of a coniferous species which can be referred, 
perhaps, as well to the genus Araucaria as to Sequoia or Abies. 
As the leaves on the branchlets appear evidently placed around 
the stems and not, on both sides of it, and as the scars left on the 
bark are of the same form as those of an Adies, I place these re- 
Mains in this Benne till they may be studied on better specimens, 
The leaves are pointed as in Zuzites dubius Gopp., from the Ter- 
tiary of Eur ook except this, these remains have no analogy wi with 
any other, published or figured. 
3. Echitonium Sophie Web. A small fragment exactly like those 
of Marshall’s coal bed and a specimen ‘of Cinnamomum affine 
already mentioned from the Marshall’s shales. 
Upper end of Purgatory cation, Dr. LeConte. 
1. Rhamnus obovatus, sp. nov. All the ‘specimens are from the 
same place, and all contain fragments of the’ same species, 
none 0: er. is species is peculiar by the form of 
the leaves ; it has the character of a Rhamnus but the seco ondary 
nerves are closer and more numerous than in any other species 
of the genus, even more so thanina Berchemia. Ido not know 
of any fossil plant comparable to this. 
From this short report on your fossil ecg sehestaod till now, 
- it is easy to draw some general conclusion 
From Rock creek we have only six epee Two are identical 
With species from the Miocene of Europe, and one of them, Plata- 
ty aceroides, is not re ex ogee from for to estonsas P. occiden 
other species are closely allied to Kurope ertiary 
the t ae wo others, ra is an American type ale ee 
