438 GEOLOGY. 
Linneus included all the insects now comprised in the family 
Carabide, at present divided into several hundreds of genera. 
To write, therefore, Carabus Linn., when we mean something 
entirely different, may be usual but is not desirable. 
I may add, that I consider it useless to expect a perfectly 
stable zoological nomenclature, until zoology itself is complete 
and perfect; but that in order to reduce changes to a minimum, 
classical and other secondary claims must not be allowed any 
great importance.”— D. Smarr, in Nature. 
GEOLOGY. 4 
A New Genus or Uxevrares.— At a meeting of the American 
- Philosophical Society, April 2nd, Prof. Cope stated that the largest 
mammal of the Eocene formations adjoining those of Wyoming, 
i.e., of the Wahsatch group of Hayden, was the Bathmodon 
radians Cope, of about the size of Rhinocerus. It was an odd 
toed ungulate, with peculiar dental characters. The incisors were 
well developed above and below, as in the tapir, but. the dental 
series was little interrupted. The crowns of the molars were 
all wider than long, and presented mixed characters. On the outer 
margin one only of the two usual crescents of Ruminants was 
present, but a tubercle represented the anterior one. The on 
which was present was very obliquely directed inwards. — inne 
crescents were represented by two angles, the posterior forming 
the inner angular margin of a flat table, the anterior a mere lng 
lum at its anterior base. The arrangement of these parts F 
stated to be of interest in connection with the relations? 
between the types of hoofed animals. The single outer gay? 
was a ruminant indication, while the inner table resembl i 
interior part of the crown of Titanotherium. It differed, howe 
in its early union with the outer margin, its edge be 
sibly homologous with the posterior transverse crest m 
The premolars had two or three lobes with erescen 
arranged transversely. He regarded the genus as 
cotherium. He stated that the mammalian fauna p “any Jet 
Utah more nearly resembled that of the Paris Basin than. 7 
discovered in our country, and that it contai 
number of generalized mammalian forms. One of 
of these was the genus Anchippodus of Dr. Leidy. 
hive 
tic section 
ing thus po* 
5 
allied to (hal 
f Wyoming d 
TAr OSER 
ned a still gre 
the most marked 
