162 Mammalegy in the United States in 1879. [March, 
future, is Mr. Cope’s, “ On the genera of Felidze and Canide,” in 
the Proceedings of the Philadelphia Academy, giving the author's 
views of their primitive types and of the successive steps through 
which they have passed, with detailed characters of the genera, 
including several new ones, and a nominal list of the species of 
both families. In the Felidae, Mr. Cope recognizes altogether 
fourteen genera (including Cryptoprocta, between Similodon and 
Pseudelurus) and ninety species—which are probably too numer- 
ous in the genera Felis and Lyncus, as the author remarks. In 
adopting Uncia of Gray as a generic term, the author assumes it 
to be derived from Uncus, a hook, but is it anything more than 
“ounce” in Latin? Dinictis cyclops n. sp., is fully described, p. 
176. The interest of this paper perhaps centers about Synagodus 
mansucius and Dysodus pravus, two new genera and species 
founded upon before-supposed varieties of Canis familiaris. Of the 
Synagodus it is stated to be “ uncertain whether any species of this 
genus exists in a wild state. Should such not be the case, we can 
only predicate the former existence of such an one as entirely 
different from the Canis familiaris, and which has given origin to 
the existing one.” Dysodus pravus is the Japanese lap dog. These 
are regarded as “the most specialized of the Canidz.” In this 
connection the author refers to the frequently-observed reduced 
dentition of man, and reasons from “ what is elsewhere known in 
zoology, that the same or nearly the same specific characters may 
be found in different genera,” that different genera may be found 
in the same species, which becomes a different species upon the 
circumstance of being referred to a new genus. Two hypotheti- 
cal genera of Hominide to “be at some future day added to 
Homo,” are named and described in anticipation of the establish- 
ment as a generic character of certain dental peculiarities, namely: 
Metanthropos with incisors 4, and Epanthropos with molars 3. The 
species of these genera, left unnamed, may be provisionally des- 
ignated respectively M. incipiens and Æ. procul, with reference to 
their extremely primitive state of possible accomplishment. Much 
might be said, doubtless, for and against the availability of names 
proposed for conjectural species zz futuro. The logical extreme 
of the procedure might be a potential Pseudanthropops gingivatus, 
that is, an hypothetical anthropomorphic super-simian without 
canines; the dental formula of which would be, according to our 
inference and our ignorance, I. ?, C. §, Pm. ?, M. ?. The new spe- 
