xvil 



INTERNAL ANATOMY 



259 



each limb being separated from the following one by a miore 

 or less sharp bend. The fifth, sixth and seventh limbs together 

 form a well-marked loop, which is generally the most dilated 

 portion of the intestine and is sometimes regarded as the true 



GlS. 



FiR. 66. Internal Anatomy of Glossnia paipalis. (After Mmchin, from 



Roubaud.) ,. a ^ m „i \ ■ 



AR rectum- G c g., junction of the two salivary ducts (G.gl.) , 

 Gl S ' salivary glands ; GJ.. duct of sucking stomach ; I.M intestine ; 

 / 'th.'. thoracic intestine ; /., sucking stomach ; Oes.. "^sophagu.s ; Ph., 

 pharynx ; Pr.. proventnculu. ; P.R.. rectal papilte ; R, hmd-gut. 



Stomach Posteriorlv the intestine passes into the capacious 

 rectum which has four rectal glands, each supphed by a bunch 

 of small tracheae. 



The appendages of the ahmentary tract are the salivary 

 glands, the sucking stomach or crop, and the Malpighian tubules. 



17 — 2 



