STllUCTUKE. 



These are species of large or moderate size, but many of the 

 smaller kinds sometimes occur iu large numbers and do great 

 harm to crops and vegetation ; some preferring particular food- 

 plants, whilst others are almost omnivorous.] 



Stractio'e. 



In the AcRiDiiD.Ti the head is usually short and broad. The 

 compound eyes are placed one on each side, and sometimes 

 approximate very closely above. More frequently they are 

 separated by a space as great or greater than their diameter ; 

 and thev are sometimes raised above the level of the rest of the 



Face of Locuda. 



Head oi Atractomorjjha. 



Fig. 2. — (A) Face of Locusta : a, eye, /;, /;, ocelli, c, frontal ridge, d, d, lateral 

 cariin\?, c, c, tempora, or fovcola, f, clypeus, g, labrum ; (B) head of 

 Atractomorphus: h, fastigium, /, i, foveokt. 



head. The head is usually horizontal, but is occasionally obliquely 

 raised. The extremity carves into the face, or is separated from 

 it by a transverse carina ; not unfrequently it is more or less 

 produced between and beyond the antennas, and this prolongation 

 is called the fastigium. \ The extreme apex of tlie fastigium is 

 sometimes called the scutellum of vcrtex.~\ 



The antennae are generally placed between or below the eyes. 



There are usually three ocelli, or simple eyes, the lateral ones 



