230 ANIMAL FORMS 



country. Of the other three the first (Monotremes) and 

 simplest of the eleven is represented by the duck-mole 



> 



FIG. 180. Australian duck-mole (Ornithorhynchus paradoxus). One-fifth natural 



6ize. 



(Ornithorliynclms) living in the Australian rivers. Its 

 general appearance and mode of life are represented in 



