44 



TJie Larva of Chirononms 



they are still distinct \ 

 connective-tissue slieatli. 



Tlie nerve-cord lias the usual 

 In the ganglia the masses of 



Fig. 35. — Nervous system of adult larva (fore part, extending to second 

 abdominal ganglion, together with muscles of body-wall). The nerves are black. 

 Ktes.g, sub-oesophageal ganglion, im, rudiments of imaginal legs, pro.g, pro- 

 thoracic ganglion, t.n. i-io, transverse nerves, mesg, mesothoracic ganglion. 

 itiet.g, metathoracic ganglion. 1-8 ah.y, abdominal ganglia. «', nerves passing 

 from first abdominal ganglion to muscles of that segment. N.B. — The Ijrain is 

 not shown. 



^ The connectives between the j^ro- and mesothoracic ganglia enclose 

 between them the insertions of a puiv of strong muscles, which arise from 

 the hinder margin of the mesothorax. The separation of the thoracic 

 connectives by muscles is more evident in large and active insects, such 

 as tlie cockroach. (See Miall and Denny, 1886, fig. 34.) 



