MARSUPIATA. 
15 
divisions of the Marsupiata to certain divisions of the placental mammalia, I 
trill here show some of the comparisons which have been made, and I shall 
afterwards add a few remarks upon them. 
The f»r*t parallel arrangement of divisions of Mammalia which follows, exhi¬ 
bits the views of Cuvier upon the correspondence of the groups of the placental 
and implacental series; next follows nn illustration of those of M. Isidore 
Geoffrey, and lastly, of those of Prof. Owen. 
CUVIER. 
Owen. 
Marsupial. 
Placental. 
Marsupial. 
Placental . 
Didelphys . / 
Insectivora part. 
Thylncinus . £ 
Carnivora. 
Dasyuridx 
Dasyurus . .? 
Peraniclidjr . J 
Ph.-wcog.tlc . j 
PhaUngista .} 
IlfpsiprymnusS 
I nsec trio ra part. 
Mynnccobius. 
Pcrameles . . 1 
Inscctriora. 
Phxscolomys . saUodentia. 
Diilelphidic .} 
Pbalangb tidae.’ 
Quadrumana. 
American Sloths, 
Isid. Geoffroy. 
Phascolarctus. 
or Arboreal Sun 
t, Hears. 
Phascoloroys . 
= Rodentia. 
Dasyuridie 
Didelphidx . 
IYramcliJx . 
Mynnccobius . 
Carnivora. 
Insecti vora. 
Pctaurus . . 
Macropus . . 
= Pteromys. 
■» Hcrbivora. 
Taxsiprs . . 
Phalangutida:. 
Macropodidte . 
Phascolorays . 
Rodcitfia. 
From an inspection of this list, it would appear that the groups of the placen¬ 
tal mammalia are hy no means strongly typified by those of the implacental 
series, or there would be a greater amount of correspondence in the views of 
these authors. Nevertheless certain marsupial annual* present a very striking 
resemblance in general appearance, and in the functions they perform, to cer¬ 
tain sections of the ordinary Mammalia, and I perfectly agree, so far, in the 
justness of the comparison instituted by Prof. Owen between the carnivorous 
and insectivorous Marsupialia, and the carnivorous and insectivorous Placenta lia. 
The herbivorous marsupials permit, in the same manner, of a tolerably close 
comparison with the higher herbivorous groups. Admitting these points of 
correspondence between the two so-called parallel classes of Mammalia, I cannot 
agree with Cutier and Isidore Geoffrey St.-Hilaire if they educe from them 
grounds for robing the Marsupiata to the rank of a class parallel to the ordinary 
