CLASS I. MAMMALIA: ORDER 14. MONOTREM AT A. 



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THE PORCUPINE ANT-EATER. 



the head a little raised, diving continually in search of insects and other small aquatic ani- 

 mals on which it feeds. It is also able to climb with facility, and may often be seen in small 

 parties resting on trunks of trees overhanging the water. It digs itself a burrow in the banks of 

 the piece of water frequented by it, making it with two openings, one above and the other a little 



THE ORNITHORHYNCHUS. 



below the surface of the water. The burrows are of great extent, usually from twenty to thirty- 

 five feet in length; these rise from the water toward the surface oflhe earth, and, at the furthest 

 part, which is also the highest, are slightly enlarged and provided 'with a sort of nest for the re- 

 ception of the young. These, when born, are quite blind and nearly naked. They are produced 

 and nursed as in the preceding genus. 



