Prof. Owen on the Class Mammalia. 185 
tion. In all these inferior psychical manifestations we are re- 
minded of Birds. Many Rodents hibernate like Reptiles. They 
Specimen over all continents. 
by an equally easy ste through the smaller Opossums to the 
RNOTIVORA. This ea is given to the order of small smooth- 
cusps 
unguiculate, plantigrade, and pentadactyle, and they have com- 
plete clavicles. The testes pass periodically from the abdomen 
Into a temporary scrotum, and are associated with large prostatic 
and vesicular glands: like most other Lissencephala, the Insecti- 
tion of their digits for supporting the large webs that serve as 
of te repeat the chief characters of the Insectivora; but a few 
C e H ; ve 
tera, and would seem to conduct through the Colugos or Flying 
Lemurs, directly to the Quadrumanous order. The Cheiroptera | 
are cosmopolitan. 
8etera which are devoid of teeth; the rest possess those organs, 
Waich, however, have no true enamel, are never displaced by a 
a divided from the temporal fossa. I have already adverted to 
Biss aton of affinity to the ovip | 
: $ loths afford by the supernumera | vertebri 
’ ye porting false ribs and M the convolaticnd of the windpipe in 
Oe thorax ; and I may add that the unusual number—three and 
“ony SERIES, VOL, XXV, NO. 74.—MARCH., 1608. 
24 
