MR.  T.  BELL  ON  THE  GENUS  CANCER. 
339 
Carapax  elevated,  particularly  at  the  gastric  region ;  the  surface  almost  uniformly 
granulated.  The  latero-anterior  margin  is  divided  into  ten  lobes,  the  sides  of  which  are 
contiguous,  and  their  margins  deeply  dentate,  two  of  the  teeth  of  each  being  larger  than 
the  others ;  the  lobes  become  broader  and  shallower  posteriorly,  and  the  last  is  obso- 
lete, passing  into  the  granulated  posterior  ridge.  The  front  has  three  teeth,  the  middle 
one  being  small,  and  in  the  old  specimen  from  which  this  description  is  principally 
taken  it  is  wholly  lost.  A  strong  tooth  projects  over  the  inner  canthus  of  the  orbit,  and 
there  is  a  smaller  one  beneath,  immediately  exterior  to  the  basilar  joint  of  the  external 
antennee,  the  strong  process  of  which  is  rather  obtuse  and  simple.  The  anterior  pair  of 
legs  are  very  large  and  strong  :  they  are  not  tuberculated  as  in  Cane,  dentatus,  nor  spiny 
as  in  Cane,  irroratus ;  but  there  are  slight  indications  of  a  double  tuberculate  earina 
on  the  upper  edge  of  the  hand,  particularly  in  young  individuals,  and  on  its  outer  sur- 
face are  five  obsolete  longitudinal  lines.  The  four  posterior  pairs  of  feet  are  strong, 
nearly  smooth,  and  terminated  by  strong,  sharp,  horny  claws.  There  is  no  hair  on  any 
part  of  the  body  or  legs  in  the  specimens  which  I  have  seen.  The  last  joint  of  the 
abdomen  in  the  male  is  produced  anteriorly  ;  the  fourth  nearly  quadrate,  rather  longer 
than  broad. 
Colour  above  reddish  brown  ;  beneath  yellow  mottled  with  reddish. 
Length  5^  inches,  breadth  7^. 
The  adult  specimen  was  taken  by  Mr.  Cuming  at  the  depth  of  twenty -five  fathoms, 
on  rocky  ground  ;  the  younger  specimens  were  caught  by  seines  on  sandy  beaches. 
I  have  dedicated  this  magnificent  species  of  a  genus  the  characters  of  which  were 
first  fully  developed  by  him,  to  Dr.  Milne  Edwards,  the  author  of  incomparably  the 
most  complete  work  on  Carcinology  that  has  ever  appeared. 
3.  Cancer  dentatus. 
Tab.  XLV. 
Cane,  testa  granulato-scahrd,  hispidci;  margine  antieo-laterali  decem-dentato,  dentibus  lan- 
ceolatis,  dentieulatis ;  manibus  tuberculoso-bicristatis,  extus  lineis  quinque  longitudi- 
nalibus  granulatis  ;  pedibus  pilosissimis. 
Hab.  apud  Valparaiso.    (Cuming,  Miller.) 
<S  Mus.  Soc.  Zool.     S  ?  Mus.  Bell. 
Carapax  considerably  elevated,  and  the  regions  rather  strongly  marked  ;  the  surface 
roughly  granulated,  hispid,  with  patches  of  small  spiny  tubercles,  particularly  towards 
the  anterior  part.  The  latero-anterior  margin,  instead  of  being  but  slightly  divided  into 
obsolete  lobes,  as  in  most  of  the  other  species,  is  deeply  cut  into  sharp  lanceolate  teeth, 
the  edges  of  which  are  furnished  with  numerous  sharp  denticulations.  The  posterior 
tooth,  which  reaches  to  the  anterior  part  of  the  cardiac  region,  is  smaller  than  the  rest, 
and  its  posterior  granulated  margin  passes  off  into  the  post-branchial  ridge.    The  front 
