CHAITKR VIII. 

 Order V. HEMIPTERA.* 



, riant-lice, JJark-licc, et a I.) 



The members of tJiis order have four -icings ; in one sub-order the 

 first pair of icings arc of tlie same thickness throughout, and usually 

 slope at the sides of the body ; in another sub-order the first pan 

 *s are thickened at the base, icith t/i inner extremities ic/iieh c 

 lap on the back. The mouth-parts are formed for sucking. TJie 

 metamorphosis is incomplete. 



The Hemiptera comprises the insects which are properly called 

 bugs. This term is commonly applied to any thing that creeps or 

 crawls ; but the entomologist always refers to a member of this 

 order when he speaks of a bug. In addition to the general term 

 bug, the representatives of some of the families are known by special 

 names, as plant-lice, bark-lice, leaf-hoppers, water-boatmen, and 

 others. The order is a very important one ; it includes many spe- 

 cies injurious to vegetation, which often occur in such great numbers 

 as to destroy the plants infested. On the other hand, some of the 

 are ranked among beneficial insects on account of their car- 

 nivorous habits ; while still others, as the cochineal and lac in.M 

 furnish us with useful products. 



The nanu- 1 lemiptera was suggested by the form of the front 

 wings in the sub-order I letcroptcra ; here the basal half of ti 

 organs is thickened so as to resemble the elytra of beetles, only the 

 terminal half being wing-like. The second pair of wings are mem- 

 branous, and arc- folded beneath the first pair. On this account, the 

 latter are often termed wing-covers ; they are also termed hcincly- 

 i word suggested by their structure. 



The \ving-covers of tin- 1 l-tei -optera present characters much 

 1 in classification; and consequently special names have l> 

 applied to the different part-. The thickened basal portion is 



* llemlptcni: //<////- (/////-), half; ptcron (rrre/;or), a wing. 



