LOCUSTS AND GRASSHOrPERS {ACRIDIW.E). 107 



Perhaps the most important and widely distributed 

 of them is Pachytybis cinerasccns, which has extended 

 its invasions over a great part 

 of the Eastern hemisphere, from 

 China to the Atlantic Ocean. It 

 exists in many places in the Orient 

 and the Asiatic Archipelago, and 

 even in New Zealand, and is the 

 commoner European migratory 

 locust ; its congener, P. migra- 

 torius, being much more restricted 

 in distribution. P. {ccdaleiis) inar- 

 inorat2is has almost as wide a dis- 

 tribution in the Eastern hemisphere 

 as P. cincrasccns, but is more 

 exclusively tropical. These locusts 

 belong to the Oedipodides. This 

 tribe does not include all the 

 species of migratory locusts of the 

 Old World ; Schistoccrca peregrina belongs to the tribe 

 Acridiides. This handsome locust has a wide distribution. 

 It is the chief species in North Africa, as in North-west 

 India, and is probably the locust in Exodus. With this 

 sole exception, the species of the genus Schistocerca 

 are confined to the New World. Schistocerca aincricana 

 is migratory to a small extent in the United States; 

 and other species are migratory in South America. The 



Fig. 21. — Proscopia imvqnaHs, 

 which hears a great general 

 resemblance to a Stick 

 Insect. 



