THE ORDERS OF TXSECTS. 27 



sometimes called the Woolly Bear, and is covered with long red 

 or black white-tipped hair. It rolls itself into a ball when dis- 

 turbed, and feeds on a variety of low plants. 



Yellow Undervving (Triphcena Orbona), natural size. 



The dull-coloured moths, with stout and moderately long 

 bodies, which fly in gardens in the evening, represent the night- 

 moths (Nbctuidec) par excellence, and the caterpillars in some 

 species do much harm by devouring the roots of plants. But 

 they are not all dull-coloured, thus the Yellow Underwing 

 (Triphccna Orbond) has brownish fore wings and yellow hind 

 wings, with a black band near the hind margin ; it expands 

 about two inches. 



Magpie Moth (Abraxas Grossulariata), natural size. 

 The Magpie Moth (Abraxas Grossulariata) may be taken as 

 the representative of another extensive group of moths, the 

 Geometridce. It is often found in gardens, and has a slender 

 yellow body, spotted with black, and broad white wings, ex- 

 panding about an inch and a half ; the fore wings are spotted 

 with black and yellow, and the hind wings with black. Its 

 caterpillar feeds on currant, and, like all of this section, has 

 only ten legs instead of sixteen, the first two pairs of the ab- 

 dominal legs, or prolegs, being wanting. This causes it to walk 



