Dandy  (ibid.)  described  also  a  small  spherical  body  which  he  names
paraliypophysis  in  connection  with  the  under  central  surface  of  the  hypo-


EPIPHYSIS  CEKEBRI  ,  579

physis,  resting  in  a  depression  in  the  floor  of  the  sella  turcica.  This  was
found  in  over  eighty  per  cent,  of  dogs  examined.  It  is  interpreted  as  a
remnant  of  the  embryonic  Rathke's  pouch.  It  is  said  to  vary  greatly  in
size  and  histological  character,  occasionally  extending  to  the  'pars  inter-
media/ and  to  have  an  individual  blood  supply  and  possibly  also  a  nerve
supply.  A  parahypophysis  has  not  yet  been  reported  for  man.
1     Tjt

FIG.  497. — FIELD  FROM  THE  CENTER  OF  A  NORMAL  CANINE  (Puppy)  PARS
ANTERIOR  (DISTALIS).
Note  the  excess  of  eosinophils  lining  the  sinuses.  No  basophils  in  the  field,
as  they  are  more  in  evidence  in  the  glandular  periphery.  The  central  elements  in
the  cell  columns  are  neutrophilic.  (Gushing.)

In  the  hypophysis  of  the  ox,  Wulzen  (Anat.  Kec.,  8,  8,  1914)  has
described  a  cone-shaped  structure  in  connection  with  the  'pars  intermedia'
resembling  in  cellular  constitution  the  pars  glandularis  but  differing  in
having  finer  connective  tissue  septa  and  smaller  acini.
