THE LOCUST, OR GRASSHOPPER 51 



Note two long slender appendages on the head. Are 

 they segmented ? These are the antennce, or feelers. Pull 

 one off close to the head, mount it under the microscope, 

 and count the segments. 



Make a drawing of one. 



Note the broad, notched flap at the lower end of the face. 

 Lift it up and detach. This is the upper lip, or labrum. 



Make a drawing of it. 



Just beneath this, note two hard black bodies. These 

 are the mandibles. Detach them both. Note the tooth- 

 like projections on the inside edges. 



Make a drawing of both. 



Beneath the mandibles, note two maxillce. Each one 

 consists of several pieces. Each also bears a slender, seg- 

 mented appendage called a palpus. The (two palpi are 

 known as the maxillary palpi. 



Make a drawing of each. 



Lastly, note the under lip, or labium. It bears two 

 slender, segmented appendages, the palpi, similar to those 

 of the maxillae. Do they have the same number of seg- 

 ments ? They are called the labial palpi. 



Make a drawing of the labium, with its palpi. 



Thorax. Note that this part of the body is composed of 

 three divisions, or segments. They may be easily seen on 

 the under side, because each one bears a pair of legs. The 

 segment next to the head is called the prothorax. The next 

 is called the mesothorax, and the last, the metathorax. The 

 mesothorax and metathorax each bear a pair of wings. 



How many wings are there ? Where are the hind wings 

 carried ? Are they expanded or folded ? Detach all wings. 

 What is the relative size of the two pairs? How do the 

 hind wings' differ from the front ones ? 



