264 



ELEMENTARY STUDIES IN INSECT LIFE 



of which dovetails into the mesosternnm. This is the 

 metasternum. (Fig. 200.) Note that the first abdom- 

 inal segment is likewise dovetailed into the posterior 

 margin of this segment. 



FIG. 201. Metathoracic, or jumping leg. c, coxa ; <r, trochanter ; /, femur ; ti, tibia ; 

 ta, tarsi ; p, pulvillus and two claws. Enlarged four times. 



Metathoracic Leg - - The metathoracic leg, though 

 somewhat different in appearance from the prothoracic 

 leg, already studied, is composed of a like number of 

 parts and bearing the same relative positions and names 

 as given in the study of the prothoracic leg. Draw the 

 metathoracic leg, and name the parts. (Fig. 201.) 



The Wings. 



The two pairs of wings on each side are membranous 

 expansions of the body-wall. They are composed of 

 membrane strengthened by many thickened portions ex- 

 tending the length of the wings. These thickenings are 



