148 



BRITISH ORTHOPTERA. 



captivity often become cannibals. It may even be 

 that some species are regularly carnivorous. 



In the Locustodea the vertex of the head is produced 



FIG. 19. Ovipositors of British species of Locustodea, to show 

 relative size and shape ( x 3). 1. Metrioptera brachyptera Linnaeus. 

 2. M. roeselii Hagenbach. 3. M. albopunctata Goeze. 4. Phas- 

 gonura viridissima Linnaeus. 5. Meconema thalassinum De Geer. 

 6. Tettigonia verrucivora Linnaeus. 7. Conocephalus dorsalis La- 

 treille. 8. Pholidoptera griseoaptera De Geer. 9. Leptophyes 

 punctatissima Bosc. 



