NO. 2 THORACIC MECHANISM OF A GRASSHOPPER SNODGRASS 



57 



PIA 

 69 ,71c 



Ss iSpn 67 66 



Fig. 33. — Musculature of the base of the fore leg of Dissostcira. 



A, inner view of base of right leg, showing coxal and trochanteral muscles 

 arising on lateral walls of protergum ; tergal ridges lettered as on figure 20 B. 



B, same as A but with inner muscles removed, showing coxal and trochanteral 

 muscles arising on episternum, and posterior group on tergum. 



C, posterior view of prosternum, right pleuron, and right coxa, showing leg 

 muscles arising on sternum and pleural arm. 



D, articular region of base of right coxa, and associated muscles, inner view. 



