i mSECTS W 1/ K AND i 



17 



as), resting on the oesophagus, and two others situated each 

 side of thr crop, low down. Each of the two [* 

 ganglia is supplied by a nerve from the ant< 

 Two aerves pass under the crop connecting the pi 

 ganglia, and from each posterior ganglion a aerve 

 backward t<> the end of the proventriculus. A pair of 

 nerves pass under the oesophagus from each side of the 

 anterior sympathetic ganglion, and another pair pass down- 

 ward to a round white body, whose nature is unknown 

 (Fig. 8,«). 



How Insects Walk and Fly. - In walking, the locust, 

 beetle, or. in fact, any insect, 

 raises and puts down it< six 

 alternately, as may be seen !>v 

 •rving tin- movements of a 

 beetle (Fig. 11). As Carlet 

 states, an in egs move 



according to the following 

 formula: 



\\ ith the 





daws on their 

 legs they pull themselves for- 

 ward; the middle legs seem to 

 Bupport and steady the body, 

 also pushing it somewhal : while 

 the hind legs in many beetles 

 push the body forward.* 

 While the structure of the limb 

 of a \ ertebrate and insect is not 

 homologous, yet the mechanism , 



or functions of the parts arc in s,a - beetle < - 



1 .v extensor, I ■ ■ .• 



the main the same as indicated extenso femur; 



". tt'tnur; 

 1U blgS. 12 tO 1"). claw: li".i,. ■ r. ..I 



,.,. » , . the Comoro I ibial 



Ine footprints ot insects arc 



Sec Miall and Dean] - " The C<x kn ich." 



