202 



BRITISH ORTHOPTERA. 



How skilfully some grasshoppers, after one of their 

 flying leaps, land unerringly on a slender grass-stem 

 or similar object?! This argues that their sight is of 

 no mean order. 



There is often some considerable difficulty in 

 distinguishing allied species of the Acridiodea. In our 



ffl 



8 



FIG. 22. Pronota of British species of Acridiodea (except Tetrix 

 Latreille) to show the arrangement of the three carinse and the 

 cross-furrow ( X 5). 1. Gomphocerus rufus Linnaeus. 2. G.maculatus 

 Tlmnberg'. 3. Mecostethus grossus Linnaeus. 4. Stenoiboihrus 

 lineatus Panzer. 5. Ovnocestus rufipes Zetterstedt. 6. 0. viridulus 

 Linnaeus. 7. Stauroderus bicolor Charpentier. 8. Chorthippus 

 elegans Charpentier. 9. C. parallelus Zetterstedt. 



own examples there is usually great diversity of colour 

 amongst individuals of the same species. Of Stauro- 

 derus bicolor it would scarcely be an exaggeration to 



, 



say that no two are alike in colour. One feels certain, 

 whatever may be the agency which brought about the 

 result, that their colouring, wherever the surroundings 



