ANATOMY. 



body between the head and the abdomen : it 

 approaches in figure to a sphere, and is the seat 

 of the organs of motion; it contains the muscles of 

 the wings and legs which proceed from it, and is 

 the main prop, or as it were the key- stone, of the 

 other two sections. The upper side is called thorax 

 or the chest, the under side pectus or the breast. 



The ABDOMEN is the third section of the body, 

 posterior to the trunk ; it is divided into six rings 

 or segments, which, by sliding one over another, 

 serve to shorten or lengthen the body. It is the 

 seat of the organs of generation, and principally 

 of those connected with respiration ; and contains 

 also the anus and the sting. The upper part is 

 called tergum or the back, the under side venter 

 or the belly. 



THE HEAD. 



The most remarkable part of the head is the 

 PROBOSCIS, of which so good an account has been 

 given by DR. EVANS that I shall describe it nearly 

 in his words. 



It is not so much the mere simplicity of nature, 

 which excites our wonder and admiration, as that 

 apparently complex structure, which operates with 

 all the ease of the simplest machinery. Of this 

 we have not a more striking instance than in the 

 proboscis of the labouring bee : though the com- 

 ponent parts of the proboscis are scarcely dis- 

 cernible by the naked eye, yet are they far more 



