584 



ZOOLOGY 



SECT. 



largest known Marsupial, having reached the dimensions of a 

 Rhinoceros ; it occupies a position intermediate between the 

 Phalangers and the Kangaroos. Unlike the latter, Diprotodon 

 had the limbs of approximately equal size, and adapted for walking : 



FIG. 1242. Wototherium mitchelli. Side view of skull. (After Owen.) 



both manus and pes were pentadactyle with very small sub-equal 



digits. Notoih&rium (Fig. 1242), somewhat smaller than Diprotodon, 



but also of large size, seems to connect together Diprotodon, the 



Wombats, and the Pha- 



langers. Thylacoleo (Fig. 



1243) is an extinct genus 



referable to the Phalanger 



family, and characterised 



by an extremely modified 



dentition, the only func- 



tional teeth being a single 



pair of large incisors in 



the middle in both upper 



and lower jaws, with a 



single elongated trenchant 



nrp rnnlnr nn oaoTi cirlo 



pre-moiar on eacn side 



FlG - 1243. Thylacoleo carnifex. Side view 



of skull> (After Flower.) 

 both above and below. 



Among the Edentata the majority of fossil as of existing forms 

 have been found in South America. But the family of the Cape 

 Ant-eaters, at the present day confined to. South Africa, is proved , 



