102 INSECT TRANSFORMATIONS. 



rt.The spit- frog-hopper (Tettigonia spumnria) flying, 

 covering the grub of the same. 



h, froth 



amounts almost to demonstration, from a circum- 

 stance discovered respecting ants by the younger Ru- 

 ber. '* The larvae of some ants," says he, " pass 

 the winter heaped up in the lowermost floor of their 

 dwelling'. I have found, at this period, very small 

 larvae in the nests inhabited by the yellow ant {For- 

 mica Jtava), the field-ant (F. coespitum ?), and some 

 other species. Those that are to pass the winter in 

 this state are covered with hair, which is not the case 

 insununer; affording another proof of that Provi- 

 dence at which naturalists are struck at every step*." 

 The same growth of a warmer clothing for the 

 winter is well known to occur among quadrupeds, 

 particularly those which inhabit the higher northern 

 latitudes t. 



Upon the same principle, a number of the cater- 

 pillars which are hatched late in autumn, and are 

 destined to live over winter, are provided with a 

 warm clothing of hair or down. This is the case 

 €ven with most of those which construct for theoi- 



* N. P. Hiiberon Ant?, p. 82. 

 t See Menageries, vol. i., p. 50. 



