Although  the  biliary  vessels  (D.  m.)  here,  as  in  most  insects,
terminate  in  the  stomach  by  separate  orifices  and  without
cystic  enlargements,  distinct  reservoirs  for  receiving  and
collecting  the  bile  are  often  developed  at  the  insertion  of
these  tubes.  In  the  pyrrhocoris  aptera  (Fig.  118.  F.)  which
feeds  on  the  juices  of  the  ripe  fruits  of  malvacious  plants,
and  the  intestinal  canal  of  which,  though  more  lengthened
and  capacious,  very  much  resembles  in  its  whole  structure
that  of  the  cimex,  the  chylopoietic  glands  are  much  more
developed.  There  are  three  pairs  of  elongated  salivary
glands  opening  into  the  mouth,  and  on  the  lower  pyloric
extremity  of  the  chylific  stomach  several  minute  simple  pan-
creatic follicles  (F.  g.)  are  observed  to  open  into  its  interior.
The  biliary  vessels  (F.  m.)  are  not  only  lengthened  and  wide,
but  have  thick  glandular  parietes,  and  they  terminate  on


352  ORGANS    OF    DIGESTION'.
