July. 1920 
77 
The Queensland Naturalist. 
waterproof cement to keep them in position. In genial 
weather, after a few days, there rises from each a creature 
in shape not unlike an Indian club. The head is at the tip of 
the handle, and the swollen rounded part is the body. The 
slightly tapering base is made up of powerful muscles, by 
which it can cling to a branch or stone. As a help, around 
the inner portion a couple of rows of short, strong spines 
are placed opposite to each other. These can be inserted in 
a crevice or inequality or on a branch or stone, so as to 
maintain a firm foothold against an opposing force. The 
only limb it posseses is a short retractile pro leg situated on 
the thorax; but, like a Yankee tool, it is adaptable to all 
SIMULIUM FLY. 
Larvas (x 10 . Fggs ’X 8|). 
sorts of work. The end is armed with a circle of hooks, 
which can be withdrawn into the interior or thrust out at 
any angle. 
Almost as soon as born the little creature boldly pushes 
its way into deeper water, after the manner of a leech,, 
disregarding the most powerful current. Should it happen 
to be caught napping and be torn into the stream, it takes 
the precaution of fixing a line to its foothold, and on this it 
soon climbs back to sure ground. 
Here it leads tiie life of a fisher. With the base 
attached firmly, the body lies in the line of the current, and 
it unfolds two semicircular nets attached to either side of 
the head : these are like an umbrella, and as the current 
sweeps t’u'ough the under side little worms, water fleas, &c.. 
are caught by tlie ril:s and fibres. Xow and then the ribs 
