farthest extremity of the low cave, and places 
himself in such a position that the rock protects 
his head and sides, and then with his hinder part 
towards the enemy, awaits the attack, but the in- 
stant it is touched the short hind legs are thrown 
up and no hold can be gained on its round hard 
hind quarters ; but the attacking party does not 
escape scatheless, for the head of the dog or the 
hand of the man, whichever it may be, is thrown 
off with such force against the side and top of 
the rocky hole as to lacerate it severely and cause 
a retreat to be made. 
The ornithorhynchus and echidna are insecti- 
vorous, and differ but very little from the marsu- 
pials herein described, except in the dental forma- 
tion, and the formation of the lower jaw ; in every 
other respect they have the peculiar character of 
the marsupials. 
FAIRFAX & BELBBIDGE, “ GUARDIAN” OFFICE, BRISBANE. 
