THE DIFFERENCE IN THE SEXES. 



325 



so that when they are opened, the insect seems to be all wing 

 and no body. 



It has just been mentioned that althongh the Acripeza has no 

 ovipositor, there are allied insects which do possess that organ. 

 These belong mostly to the genera Ephippiger, Nabrus, and Odon- 

 tnra. The last-inentinned insect inhabits many parts of Europe, 



Fig. 103. — Aoripeza reticulata. Male. 

 (Brown, mottled with black.) 



such as Sardinia, Germany, and Spain, and is also found in 

 Algeria. The female has a short, boldly-curved ovipositor, both 

 edges of which are deeply notched like the edge of a saw. The 

 name Oclonhtra, i.e. "tooth-tailed," refers to this structure. 



On Plate VI. may be seen two very beautiful examples of 

 these insects. The upper figure represents Acridoxena Haivaiiana, 

 which, as its name implies, is a native of Hawaii. Whether its 

 wings be opened or closed, it presents a very striking appearance, 

 as we shall presently see. The illustration represents it as in 

 the act of flying, in which attitude we will first describe it. 



The general colour of the body, including the thorax, is green, 

 with a tinge of yellow, the head being very much darker, and, 

 indeed, almost black. The elytra are decorated after a very 

 elaborate manner. Their outer portion is ruddy chestnut. 



