Classification of Animals. 561 
loose naked shin that connects the limbs, and supports them in their 
leaps from tree to tree, as well as their nocturnal habits, and insect- 
food, lead directly to the Vespertilionidce or bats, the most aberrant 
family of the order, and constituting its suctorial type. His obser- 
vations on the arrangement of this division are very short, and he 
adopts without any change the types of the sub-families, as pointed 
out by Mr Gray, viz. Rhinolophince, Phyllostomince, Pteropince, Noc- 
tUionince, and Vespertilioninas. 
The Ferae or rapacious order, the subtypical division of the Mam- 
malia follows next in succession, but of this and the remaining 
orders, he does not profess to enter into a minute analysis of the 
minor groups, or the location of the genera in their natural series, 
which would require more space than the nature of the work per- 
mits, and more labour than he has been able to bestow upon them ; 
he therefore contents himself with pointing out what he considers 
to be the primary types and divisions of each, and the mode in which 
the different circles are connected with each other. The five groups 
of the Ferae are the Felidce and Mustelidce, the Didelphidce, Sore- 
cidce, and Phocidce ; the two first forming the typical and subtypi- 
cal families, the three latter the aberrant. He commences his no- 
tice of them, with the Didelphidce or Opossum family, by which on 
one side the ferine order is immediately connected with the Qua- 
drumana, while it leads by the genera Cladobates, or that of Gym- 
nura, Raffles, to the Sorecidce, and to the Muslelidce, in all proba- 
bility by the genus Arctitis. Besides the genus Didelphis, re- 
stricted to the American marsupiate opossums, and the group of 
which Did. dorsigera is the representative, it contains the Dasyuri 
or brush-tailed opossums of Australia, &c. The passage from this 
family to the Sorecidce, which corresponds without variation to the 
Insectivora of Cuvier, is effected by the Gymnura Rafflesii, an ani- 
mal bearing a near affinity to the Cladobaies or Tupaia of Raffles. 
Of this family, the shrew mice, genus Sorex, are considered the 
typical representatives ; among its members may be enumerated 
the hedgehogs (firinaceus), the moles (talpa), and other animals 
nearly related to them, and belonging to the genera Scalops, Chry- 
sochloros, Centenes, &c. 
The Phocidce (Seals), the last of the aberrant groups, and con- 
stituting the aquatic division of the order, stands at present almost 
isolated from the foregoing families, and, as Mr Swainson observes, 
almost equally disconnected with the typical Felidse. This, how- 
ever, we must suppose, arises from our ignorance or non-discovery 
