480 The American Naturalist. [May, 
stratigraphic and paleontologic evidence by the State Geologist, Prof. 
umble. Of the Eocene beds, the divisions below the Fayette 
are retained, but the Fayette is limited to the basal sandy portion of 
the beds originally bearing the name, and characterized by the opal- 
ized wood it contains. The succeeding clays are called Frio, and they 
mark the close of the Eocene. The Neocene divisions, beginning with 
the lowest, are Oakville, Lapara (the coastal representative of the 
Blanco), Lagarto and Reynosa. The last is a widely distributed bed 
of gravel cemented by lime and interbedded with clays and limy sands. 
The basal beds of the Plistocene are the Equus, the direct correlatives 
of the Equus of the Llano Estacado, which are followed in turn by 
the Coast Clays, and the Coast Sands. (Trans. Texas Acad. Sci., 
1894). 
An account of an important find of Mastodon bones (M. americanus) 
near the city of Cincinnati, Ohio, is given by Mr. Seth Hayes. At 
least three individuals are represented. One complete jaw of an old 
animal, as indicated by the excessive amount of wear of the last molars 
presents the unique feature of two mandibular tusks. On Prof. Orton’s 
authority it is stated that the bed from which these remains were taken 
is of Postglacial origin. (Journ. Cin. Nat. Hist. Soc., Jan., 1895.) 
BOTANY.’ 
Notes on Mexican Lichens. I,—Sometime since a quantity of 
lichen material from Mexico was placed in my hands for study. The 
collection was made by Mr. Jared G. Smith and Professor Lawrence 
Bruner on and about Mt. Orizaba, in the latter part of 1891 and in 
the months of January and February, 1892 
The following annotated list it given as a report of the results of the 
study of certain genera represented in the collection, and will be fol- 
lowed from time to time by other “notes” as the remainder of the 
material is worked over. 
Ramalina. 
_ R. linearis (L. f.; Sw.) Tuckerm. Trees, ete. Orizaba. (Bruner 
This agrees with specimens in hb. Tuck. under this name, but 
is not the linearis of Nylander. Spores straight or curved, 
