100 INTRODUCTION TO 



backwards, is the Epicranium, the posterior portion 

 of which, where the stemmata are often situated, is 

 the Vertex. Bounding the epicranium in front and 

 extending to the clypeus, is a space which has been 

 called the forehead, (frons). The clypeus (nasus of 

 Kirby, Epistome of Latreille,) occupies the ante- 

 rior part of the head immediately above the mouth, 

 it being apparently its office to guard the oral organs 

 from injury. Sometimes the whole of the anterior 

 portion of the head from the mouth to the region of 

 the eyes, is denominated the face, (fades) and in 

 certain tribes particular parts become developed, 

 and consequently require to be indicated by addi- 

 tional names, which will be afterwards noticed. On 

 the lower and lateral regions of the head, the fol- 

 lowing parts may be particularized : the Gula or 

 throat, which lies immediately posterior to the under 

 lip, and extends to the point where the head joins 

 the prothorax: the cheeks, (gence) composing the 

 sides of the head from the eyes downwards to the 

 mouth ; the posterior portion of which lying in the 

 vicinity of the eyes, is termed the temples, (tempora.) 

 When the head is vertical or nearly so, the back 

 part of it is called the occiput* 



Such are the principal fixed parts of the cranium, 

 if we add the eyes and ocelli ; when others require 

 to be definitely pointed out, they may in general be 

 intelligibly named and characterised from their pro- 

 pinquity to other parts. We are now to notice the 



* For delineations of the different parts of the head, thorax. 

 &c. see Plate 1st, with the annexed explanation. 



