300 
MR.  E.  T.  BENNETT'S  ACCOUNT  OF  MACROPUS  PARRYI. 
joined  by  the  duct  of  the  pancreas  immediately  before  penetrating  the  duodenum,  which 
it  enters  in  Macr.  Parryi  at  3  inches  from  the  pylorus ;  and  in  Macr.  major  at  5  inches' 
distance  from  the  same  place.  A  similar  glandular  structure  of  the  biliary  duct  is  ob- 
servable in  some  of  the  Dibranchiate  Cephalopods ;  but  in  these  the  accessory  folliculi 
are  more  developed,  and  were  regarded  by  Hunter  as  analogous  to  a  pancreas :  the 
true  analogue  of  this  gland,  however,  exists  in  all  the  Cephalopods  in  the  simple  rudi- 
mental  condition  which  it  presents  in  the  lowest  Vertebrata.  The  pancreas  in  the  Ma- 
cropi  extends  from  the  spleen  across  the  root  of  the  mesentery  to  the  duodenum ;  it 
sends  off  many  branched  processes  into  the  posterior  part  of  the  epiploon. 
"  The  spZeen  presents  a  singular  figure,  which  might,  at  first  sight,  be  supposed  to 
relate  to  the  extent  and  complexity  of  the  stomach.  It  is  a  narrow,  flattened,  T-shaped 
body ;  one  long  strip  extends  down  the  left  side  of  the  great  end  of  the  stomach,  and 
a  shorter  strip  goes  ofi"  at  right  angles  to  the  smaller  end  of  the  stomach,  and  accom- 
panies a  large  process  of  the  pancreas.  In  Dasyurus  and  Phalangista,  however,  in  which 
the  stomach  is  of  a  simple  form,  the  spleen  is  also  characterized  by  a  process  extended 
at  right  angles  from  the  longer  portion  or  body  of  the  gland  which  lies  longitudinally 
in  the  abdomen.  Now  in  these  Marsupial  genera  the  superadded  process  accompanies 
and  is  in  close  contact  with  a  corresponding  process  of  the  pancreas,  as  in  the  Kangaroo, 
but  both  processes  are  comparatively  shorter.  The  smaller  or  transverse  portion  of  the 
spleen  was  much  notched  at  its  anterior  trenchant  margin  in  Macr.  Parryi :  I  have  al- 
ways observed  it  entire  in  Macr.  major. 
"  The  kidney  in  Macr.  Parryi  presented  one  elongated  mamilla,  without  the  smaller 
accessory  ones  observable  at  its  sides  in  the  greater  species.  The  situation  of  these 
glands,  and  of  the  suprarenal  glands,  is  the  same  in  both.  In  Macr.  Parryi  the  kid- 
neys were  on  the  same  transverse  line,  6  inches  above  the  brim  of  the  pelvis. 
"  The  viscera  of  the  chest  were  as  in  Macr.  major.  The  blood  of  the  head  and  ante- 
rior extremities  is  returned  to  the  right  auricle  by  two  superior  ven<s  cava,  as  in  the 
other  Marsupiata. 
' '  The  uterine  organs  presented  the  same  remarkable  structure  as  in  the  greater  Kan- 
garoo, except  that  the  septum  of  the  mesial  cul-de-sac  of  the  vagina  was  not  extended  so 
low  down.  Traces  of  peritoneal  canals  were  carefully  searched  for,  but  with  the  same 
negative  result  as  on  former  occasions." 
Plate  XXXVII. 
Macropus  Parryi. 
A  side  view  of  its  teeth  is  subjoined,  chiefly  for  the  purpose  of  showing  the  form  of 
the  third  incisor,  which  diff"ers  from  that  of  Macr.  major  by  its  smaller  extent  and  by 
the  anterior  of  the  two  nearly  equal  portions  into  which  it  is  divided  being  destitute  of 
groove. 
