242 GRAMMAR OF ENTOMOLOGY. 



CHAPTER VII. 



OF THE CLASSIFICATION OF HEMIPTERA. 



794. The metamorphosis of the Hemiptera is 

 isomorphous, resembling that of the Orthoptera. 

 Imago with the parts of the mouth only partially 

 developed; the mandibles are without any hori- 

 zontal motion, but elongate and slender, and, 

 together with the maxillee and tongue, are inclosed 

 in a sucker, which is composed of the labium 

 principally, but protected above by the labrum ; 

 this sucker is bent beneath the head and breast, 

 excepting when in use, when it is usually thrust 

 perpendicularly into the rind of vegetables, or skin 

 of animals, to extract the sap or blood, which, in 

 this class, constitute the food; the feelers are 

 obsolete. 



795. Bugs (Cimicites). Antennas elongate, con- 

 spicuous, four- or five-jointed ; fore wings with the 

 basal portion coriaceous, the apical portions which 

 cross each other membranaceous ; the legs are of 



