ACRIDA VERRUCIVORA. 
253 
group. Some have the wings and tegmina perfect, 
others are apterous ; in some the males have an ocellus 
at the base of the tegmina, in others it is wanting ; 
the mandibles of certain species are short, trigonate, 
and almost entire on the inner edge, while others 
have them long, acute, and dentate ; finally, the ovi- 
positor is sometimes curved and sometimes straight. 
ACRIDA VERRUCIVORA. 
Plate XIII. Fig. 2. 
Gryllus verrucivorus, Linn. Fair. — Roesel II. Gryll. VIII. 
This handsome and not uncommon species, is nearly 
an inch and a half in length, the general colour green, 
with dark brown spots on the tegmina, and a few 
smaller ones on other parts of the body ; the ovipo- 
sitor of the female curved. It has obtained its name 
from a belief said to have once prevailed among the 
Swedish peasantry, that its bite and the black liquid 
which it disgorges into the wound were useful in 
removing warts. It is said to have occurred in this 
country : on the continent it is not rare. 
PTEROPIIYLLA OCELLATA. 
Plate XIII. Fig. 3. 
We here figure wdiat Stoll regards, seemingly with 
propriety, as a variety of the Gryllus ocellatus of Lin- 
nseus, belonging to a remarkable group, at once dis- 
tinguished from all others by the amplitude of their 
tegmina and -wings. In its ordinary appearance the 
tegmina very much resemble a dry leaf*, the disk in- 
clining to a purplish colour ; in the variety represented 
