AND  ACCOUNT  OF  A  NEW  SPECIES  FROM  THE  INDIAN  SEAS. 
25 
before  entering  the  first  stomach  or  gizzard.  The  gizzard  has  a  rounded  form,  with 
strong  muscular  coats ;  it  is  placed  near  the  bottom  of  the  cavity  of  the  mantle,  in 
close  connexion  with  the  upper  surface  of  the  ovarium,  and  as  usual  to  the  right  of  the 
spiral  stomach.  The  second  or  spiral  stomach  is  here  larger  than  the  first,  of  an 
ovoidal  form,  extending  horizontally  to  the  left  side,  marked  internally  with  spiral 
folds,  but  having  only  a  minute  portion  of  its  left  extremity  twisted  in  a  spiral  manner, 
like  the  spire  of  a  Haliotis\  It  opens  by  a  wide  orifice  from  the  first  stomach,  and 
receives  the  termination  of  the  hepatic  ducts  from  the  four  divisions  of  the  liver.  The 
pancreatic  glands  surrounding  the  hepatic  ducts  have  here  a  ramified  form,  with  long 
wide  branching  ducts,  each  extreme  ramification  terminating  in  a  separate  small  glan- 
dular vesicle.  The  termination  of  the  united  hepatic  and  pancreatic  ducts  in  this 
large  spiral  or  second  stomach,  is  protected,  as  usual,  by  two  prominent  lips,  between 
which  it  enters  obliquely,  and  these  valvular  lips  extend  tapering  to  beyond  the  pyloric 
extremity  of  the  stomach.  The  subdivided  form  of  the  stomach  is  common  to  the 
Cephalopods,  with  many  other  Molluscous  animals,  and  the  stomach  is  the  part  into 
which  the  hepatic  ducts  open  in  all  these  classes.  But  in  the  Cephalopods  these  ducts 
open  also  partially  into  the  duodenum,  as  in  the  Vertebrata,  by  the  valvular  lips  at  the 
termination  of  these  ducts  extending  from  the  spiral  stomach  into  that  intestine  to  near 
the  anus.  The  intestine  passes  up  in  front  of  the  space  between  the  lobes  of  the  liver, 
and  over  the  ventral  surface  of  the  large  ink  bag.  The  liver  is  divided  into  four  prin- 
cipal lobes,  as  in  Nautilus,  which  are  quite  separate  from  each  other ;  and  the  ink  bag, 
which  is  large  and  situate  close  to  the  anus,  is  placed  above  and  between  the  upper 
two  lobes.  The  lobules  which  compose  these  four  distinct  portions  of  the  liver  are 
not,  however,  detached  from  each  other  as  in  the  Testaceous  Cephalopod.  The  high 
situation,  the  great  size,  and  the  shortness  of  the  duct,  of  the  ink  gland,  agree  with 
those  of  Sepiola,  another  small  and  delicate  genus  of  Cephalopoda.  The  alseform  mem- 
branous appendix  attached  to  each  side  of  the  anus  is  about  two  lines  long,  and  the 
anus  opens  by  a  transverse  slit  between  two  prominent  semicircular  lips,  situate  at  a 
great  distance  below  the  syphon.  The  branchial  arteries,  or  subdivisions  of  the  vetia 
cava,  pass  to  the  auricles  between  the  two  lobes  of  the  liver  on  each  side,  and  just 
before  entering  these  lateral  hearts,  they  are  surrounded  by  a  spherical  cluster  of 
vesicles^,  like  those  which  open  into  these  vessels  in  Nautilus.  The  branchial  auricles, 
however,  are  not  absent,  as  in  Nautilus ;  they  are  of  great  size,  nearly  spherical,  with 
firm  parietes,  and  are  entirely  destitute  of  those  singular  appendices  usually  found  at- 
tached to  these  muscular  sacs  in  the  Naked  Cephalopods.  The  hranchice  are  single  on 
each  side,  and  the  smallest  in  proportion  I  have  yet  met  with,  each  measuring  only 
two  lines  in  length.  They  have  the  usual  pectinated  structure,  with  the  artery  running 
along  the  connecting  ligament  on  the  dorsal  surface,  and  the  vein,  which  is  here  re- 
'  Fig.  7.  '  Fig.  8. 
VOL.  I. 
£ 
