An Ortlwptcrous Insect. 133 



the stomach and open into it. How many are there ? The 

 intestine is somewhat less than the stomach in size. It 

 receives the ducts which lead from the Malpighian bodies. 

 The latter appear as a tangle of minute tubes. The intestine 

 opens into the rectum, which in turn opens through the anus 

 to the exterior. 



The Nervous System. The brain occupies the same 

 position that it has been found to occupy in all the Arthro- 

 pods that have been studied. The (Ksophageal collar and 

 ventral nerve-chain present no new features. Is there a 

 ganglion for each thoracic segment ? There are five abdom- 

 inal ganglia. In which segments do they rest ? 



