Thus to collecting tubule (2a) join three groups of thvee 

 flame cells each, directly or indi rectlyt by accessory 

 collecting tubules* 



At the posterior end of the body, th - ascending tube 

 of the bladder <le) receives three oolleo^ir^g tubules 

 (2b, 2o, and fid). One rf these collecting tubes (2b) is 

 considerably longer than the others* It receives two 

 sets r-.f three capillaries and flame cells, numbers 1C, 11, 

 12 and 13, 14, 15* The most anterior group of capillaries 

 ^ris^hfjarly from the sorse ;oint and drain the region at the 

 posterior end of the acetabulum, while the other Bet is just 

 3 short distance behind, oach capillary being attached 

 singly. If the aooftssory collecting tubule for the first 

 group ^xiFts it nay be said to bi between the oapillariee 

 llx and IJix, ^hile t?io Intter group might b said to liaYe 

 for its accessory collecting tubule the part between 13x and 

 15x. Another cc'llecting tubule (2o) if euoh can be e-^id 

 to exi-*t, re Delves a very short ac<iefory collecting tubule 

 (3f), which in turn receives three cupillaries almost uniting 

 at the same point. The flame cells in thia roup are numbers 

 16, 17 -md 18 and are located just b<jhind the group previously 

 mentioned, bing about half w^y between the a^etabulum and 

 tte posterior end of the body. 'In* other collecting tubule 

 (2d), is very in rt. Into it flow the wastes of the accessory 

 collecting tubules {3g and 3h). ^o each one rt these after 

 much coiling join the capillaries of flaiae cells 19, 20, 21 am 

 22, 23, 24. 



