ACRIDA VEERUCIVORA. 253 



group. Some have the wings and tegmina perfect, 

 others are apterous ; in some the males have an ocellus 

 at the hase 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. 



PLATS XIII. Fig. 2. 

 Gryllus verrucivorus, Linn. Fabr. 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. 



PTEROPHYLLA OCELLATA. 

 PLATE XIII. Fig. 3. 



WE here figure what Stoll regards, seemingly with 

 propriety, as a variety of the Gryllus ocettatus of Lin- 

 naeus, 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 



