1895.] Recent Literature. 139 
each other, and the deposits of both are presumably of Oligocene age, 
not a single instance is known of the occurrence of the same species in 
the two basins. 
“ (3) No species is identical with any European Tertiary form. 
“(4) A very considerable number of genera are extinct, often in- 
cluding a number of species. 
*‘(5) Existing genera which are represented in the American Terti- 
aries are mostly American, not infrequently subtropical or tropical 
American, and where found also in the Old World are mostly those 
which are common to the North Temperate Zone. A warmer climate 
than at present is indicated. 
(6) There are no extinct families, but in one instance an extinct 
subfamily with numerous representatives. 
“(7) The Tertiary European fauna is nearer than our own Tertiary 
fauna in the relative preponderance of its families, subfamilies and 
tribes.” 
“ These conclusions are almost identical, word for word, with those 
reached from a study of the Teytiary Hemiptera of the United States, 
although in that study a far more meagre representation of the Gosiute 
fauna was at hand.” 
The Fishes of Pennsylvania.’—In an octavo volume of 139 
pages Dr. Tarleton Bean gives in a concise form descriptions of all the 
species of fishes found in the State of Pennsylvania, with notes upon 
their common name, distribution, size, habits, reproduction, rate of 
growth and mode of capture. The descriptions are based upon speci- 
mens contained in the collection of the United States National Mu- 
seum, and the popular notes have been obtained by personal investiga- 
tion and, in part, by compilation from.the writings of Goode, Gill, Cope 
and Jordan. 
The most important fishes are represented on 35 plates, of which 15 
are handsomely colored. Dr. Bean’s well-known reputation as an 
ichthyologist is fully sustained by this work, and it fully justifies the 
State in incurring the expense necessary to its publication. Its value 
is both utilitarian and educational. 
3 The Fishes of Pennsylvania, by Tarleton H. Bean, M. D.., Harrisburg, Pa., 
1893. 
