154 
CICADA* 
ceases to absorb any longer the juices of the plant 
and to discharge the protecting froth, which, at 
this period, forms a vaulted canopy over the in- 
sect, instead of entirely investing it as before: the 
skin of the larva is gradually thrown off, and the 
animal in its complete form emerges from its con- 
cealment. Its size is scarcely superior to that of 
the larva, but its colour is brown, with a pair of 
broad, irregular, pale or whitish bands across the 
upper wings. If disturbed, it nimbly springs to a 
great distance, and is commonly known by the 
name of the Froghopper, from some fancied resem- 
blance to the colour and shape of that animal in 
miniature. These insects breed during the month 
of September, and towards the beginning of Oc- 
tober deposit their eggs, which are not hatched 
till the succeeding spring. 
Of similar size and shape to the preceding is 
the Cicada sanguinolenta, but of a deep black 
colour, with two scarlet bands across the wings, 
the body being varied with red and black. 
Among the most singular Cicadae are those in 
which the thorax is raised perpendicularly into a 
large and flat leaf-like membrane or process : 
these are of exotip extraction, and the most re- 
markable is the Cicada rhombea of Linnasus, which 
is a native of Jamaica, and of a brown colour: 
the thoracic process is of a rhomboid shape, and 
widest at the hind part. 
