104 GEOGRAPHICAL DISTRIBUTION 



sixteen regions, and the species do not exhibit much difference of structure. 

 Myrmecophila is of small size and inhabits ants' nests, and is therefore not 

 likely to be observed except where insects are much studied ; it occurs in 

 South Europe and in North Africa. Gryllus is found in all the regions ; 

 the chirp of G. domesticus, the house cricket, is well known, and multitudes 

 of G. campestris, the field cricket, occur in several parts of Europe. 

 Neraobius is allied to Gryllus, inhabits woods, and is found also in South 

 Europe, in Hindostan, in Australia, in South America towards the Atlantic, 

 in Central America and in North America. Odontura inhabits South 

 Europe, North Africa, West Asia and South America towards the Atlantic. 

 Gampsocleis inhabits China. Thamnotrizon inhabits South Europe, 

 North Africa, West Asia and North Asia. Decticus inhabits South 

 Europe, North Africa, West Asia, North Asia, China, Hindostan, South 

 America towards the Atlantic, Central America and North America. 

 Xiphidium inhabits South Europe, North Africa, West Africa, South 

 Africa, China, Hindostan, Australasia, Australia and New Zealand. 

 Meconema inhabits South Europe and Hindostan. Locusta inhabits 

 Sooth Europe, North Africa, North Asia, Hindostan, Australasia, Australia, 

 New Zealand and South America towards the Pacific. Phaneroptera 

 inhabits South Europe, North Africa, West Africa, South Africa, China, 

 Hindostan, Australasia, Australia, South America on both sides, Central 

 America and North America. These eight genera are long-horned grass- 

 hoppers and mostly dwell in herbage; Xiphidium and Meconema are 

 found on trees and shrubs. Acridium occurs in all the regions: this 

 genus and Pachytylus include the migratory locusts, which are scarce and 

 generally appear as stragglers in the western part of North Europe. 

 Caloptenus and GSdipoda inhabit all the regions, but are much more 

 characteristic of South Europe than of North Europe: the latter genus is 

 distinguished by its bright red or blue or yellow hind wings. Podisma is 

 recorded as a native of South Europe, of West Africa, of South Africa, of 

 West Asia, of both sides of South America, of Central America and of 

 North America. Pachytylus has not been recorded as a native of the 

 Pacific side of S. America, nor of Central America, but inhabits all the 

 other regions. Stenobothrus and Tettix have not been discovered in 

 Polynesia, but are found in all the other regions; most of the grasshoppers 

 in England are Stenobothri. Epacromia inhabits South Europe, North 

 Africa, West Africa, South Africa, West Asia, China, Hindostan, 

 Australasia, Australia and New Zealand. Stetheophyma occurs in South 

 Europe aud in North America; it is remarkable that S. variegata is nearly 

 peculiar to the Swiss Alps and to North America. Gomphocerus inhabits 

 South Europe, North Asia, China, Hindostan, South America towards the 

 Atlantic and North America. Chrysochraon inhabits South Europe, and 

 perhaps also South America towards the Atlantic. 



2nd. South Europe. 



Polypbaga Brachytrypes Platyblemmus 



Panchlora Mogoplistes Arachnocephalus 



Aphlebia GScanthus Hadencecus 



Polyzosteria Trigonidium Callimenus 



Tridactylus Phalangopsis Onconotus 



