INTRODUCTION. 5? 



Tribes. Families. Genera. Subgenera. 



SARCOPHAGA. 

 Three kinds of teeth ; 



canines long in both / Thvlacinus. 



jaws ; a simple sto- Dasyuridce. J Dasyurus. 

 mach ; no intestinum { Phascoeale. 



ftfcum. 



Extinct transitional , _, . A , , ^ 



forms i Phasoolothenum. \ v ns , a \\ 



B ........... \Thylacotherium. ^^ lL 



ENTOMOPHAGA. 

 Three kinds of teeth in 

 both jaws ; a simple 



stomach ; a moder- Ambulatoria. Myrmecobius. 

 atelylong intestinum 



{SSffi. 



Scansoria. . Didelphis. . Cheironectes. 

 CARPOPHAOA. rCuscus 



f Pha.angis,a. }*%*** 



mach; a very long ^Petaurus. . . Acrobata. 



intestinum caecum. 



Phascolarctidce. Phascolarctus. 



POEPHAGA. 



Anterior incisors large 

 and long in both 

 jaws ; canines pre- 



sent in the upper sr^-^/v^-j-j^, / Hypsiprymnus. / Halmaturut. 

 jawonly,orwanting. V**"*****. \Macropus. \Macropus. 

 A complex stomach; 

 a long intestinum 

 ccecum. 



RHIZOPHAGA. 



Two scalpriform incis- 



ors in both jaws ; no 



canines. Stomach f Ph a ^nlnmir ^ 



with a special gland; Phatcolomyida. { DiprotodSK } F 8sil - 

 casctim short, wide, 

 with a vermiform 

 appendage. 



Thus four, celebrated Anatomists and Zoologists, 

 Cuvier, Geoffroy Saint-Hilaire, De Blainville, and 

 Owen, agree in regarding the Marsupiata as a dis- 

 tinct group of Mammalia; there are, however, several 

 Zoologists who regard the section Marsupiata as an 

 unnatural one, and arrange the species of that group 

 in the various other orders of quadrupeds. Among 



