MR.  E.  T.  BENNETT'S  ACCOUNT  OF  MACROPUS  PARRYI. 
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when  erect  upon  the  tripod  of  the  hinder  legs  and  tail.  The  abdominal  muscles  are 
seen  in  violent  action  for  a  few  seconds  ;  the  head  is  a  httle  depressed ;  and  then  the 
cud  is  chewed  by  a  quick  rotatory  motion  of  the  jaws.  This  act  was  more  commonly 
noticed  after  physic  had  been  given  to  the  animals,  which  we  may  suppose  to  have 
interrupted  the  healthy  digestive  processes  ;  it  by  no  means  takes  place  with  the  same 
frequency  and  regularity  as  in  the  true  Ruminants. 
"The  disposition  and  structure  of  the  intestinal  canal  corresponded  to  that  of  the 
greater  Kangaroo,  in  an  adult  specimen  of  which  I  measured  carefully  the  intestines, 
and  found  the  length  of  the  small  intestines  22  feet ;  of  the  large  intestines,  9  feet ;  of 
the  cacum,  1  foot  10  inches  :  in  Macr.  Parryi  the  small  intestines  measured  9  feet  ;  the 
large  intestines  4  feet ;  and  the  cacum  9  inches.  The  different  segments  of  the  canal 
have  consequently  nearly  the  same  relative  proportions ;  but  the  whole  are  shorter  in 
proportion  to  the  body  than  in  the  greater  Kangaroo. 
"  There  were  several  glandular  patches  in  the  ileum;  the  villi  of  this  gut,  viewed 
under  the  microscope,  were  thickly  set,  moderately  long,  and  compressed,  as  in  the  greater 
Kangaroo.  In  the  large  intestines  the  mucous  surface  was  devoid  of  villi,  but  presented, 
when  magnified,  a  very  fine  reticulation.  In  the  greater  Kangaroo  two  longitudinal 
bands  commence  about  one  third  of  the  distance  from  the  end  of  the  caecum,  and  con- 
tinue for  about  2  feet  along  the  colon,  when  they  gradually  spread  over  the  gut  and  dis- 
appear ;  very  faint  traces  of  a  similar  structure  were  perceptible  in  Macr.  Parryi :  but 
in  neither  species  do  these  bands  draw  up  the  intestine  into  pouches ;  nor  is  the  c(scum 
or  colon  dilated  to  serve  as  a  reservoir,  the  stomach  here  serving  for  the  necessary  ac- 
cumulation and  retention  of  the  vegetable  substances.  In  Semnopithecus,  however,  the 
colon  is  sacculated  as  in  other  Quadrumana,  notwithstanding  the  complicated  structure 
of  its  capacious  stomach.  I  have  observed  in  the  greater  Kangaroo  that  the  contents  of 
the  ccBCum  are  very  soft,  and  so  continue  along  the  colon  to  the  ends  of  the  two  longi- 
tudinal bands,  beyond  which  they  begin  to  be  formed  into  cubical  lumps  about  an  inch 
square,  with  the  margins  rounded  off. 
"  The  liver  in  Macr.  Parryi  was  situated  wholly  to  the  right  of  the  mesial  plane,  as 
in  the  Ruminants ,  and  from  a  similar  cause,  viz.  the  preponderating  size  of  the  stomach, 
which,  with  the  spleen,  fills  the  left  hypochondrium.  It  presented  the  same  form  as  in 
Macr.  major,  being  more  or  less  deeply  cleft  into  five  lobes  exclusive  of  the  Spigelian 
appendix  or  lobidus.  The  latter  is  not  continued  in  the  Kangaroo  from  the  right  lobe  of 
the  liver,  as  in  most  other  Mammalia,  but  is  a  process  of  the  left  lobe,  on  account  of 
the  position  of  that  part  of  the  lesser  curvature  of  the  stomach  to  which  it  is  adapted. 
"  The  gall-bladder  does  not  perforate  the  liver,  as  in  the  Opossum,  but  occupies  a 
deep  fissure,  its  fundus  in  both  genera,  however,  projecting  from  the  convex  surface  of 
the  gland. 
"The  terminal  portion  of  the  ductus  choledochus  was  surrounded  and  thickened  by 
the  same  glandular  structure  in  Macr.  Parryi  as  in  Macr.  major  ;  and  was  similarly 
VOL.  I.  2  R 
