ENTOMOLOGY OF AUSTRALIA. 
15 
But on examining- the Australian species, I find that some of them, which must 
be placed with the Indian species that occupy his genus Cypliocrana , charac¬ 
terized as having ‘ c indistinct,” have in fact distinct stemmata or eyelets in 
front of their heads : and as several species in this work differ very much in 
form from those of the other parts of the globe, I have therefore proposed to 
the scientific entomologist several subgeneric divisions, noticed in the “ Spe- 
cierum Synopsis.” 
One of the most striking geographical divisions of these insects is, that most 
of the winged Australian species possess two abdominal appendages or leaf¬ 
lets at the tip of the abdomen, whicli vary in length and form; the females of 
some of the Indian species has three broad short ones, while in the males, as in 
those of America, these organs are entirely wanting. The males of most of the 
species of this family, taken generally, are also armed at the tip of the abdomen 
with a pair of forceps of various length and strength; even the males of some 
apterous or wingless species possess this last-mentioned appendage, but in a 
less degx-ee. 
Before entering on the descriptions of the species, it will be right to state 
that the colours of these insects are very difficult to describe properly from 
preserved specimens ; for those which are of a fine green colour when living, 
are liable to change to a brownish yellow, and if placed in spirit of wine, to 
dark brown. It has been recorded that when the pin is pierced through the 
thorax of some species of this family, they emit a yellow liquid, which if it 
touches any part of the insect’s body will turn it yellow. 
