340 
MR.  T.  BELL  ON  THE  GENUS  CANCER. 
has  three  strong  acute  teeth,  of  which  the  middle  one  is  the  most  prominent :  there  is 
also  a  strong  triangular  tooth  over  the  inner  canthus  of  the  orbit,  a  smaller  one  over  the 
outer,  between  the  two  superior  orbitar  fissures,  and  a  large  one  beneath  the  inner  can- 
thus,  with  a  smaller  one  at  its  outer  base.  The  tooth-like  process  of  the  basilar  joint  of 
the  external  aw^ewn^  is  strong,  prominent,  acute,  and  denticulate  at  its  margin,  like  tliose 
of  the  border  of  the  carapax.  The  claws  are  very  robust,  and  strongly  marked.  The 
carpus  has  several  more  or  less  complete  lines  of  strong  spiny  tubercles,  which  termi- 
nate in  two  strong  spines  on  the  upper  and  anterior  margin  ;  the  hand  is  furnished  on 
its  upper  edge  with  two  crests  of  similar  tubercles,  which  are  extended  to  the  moveable 
finger  ;  on  the  outer  surface  of  the  hand  are  five  longitudinal  equidistant  raised  lines, 
which  are  more  or  less  tuberculate  or  granulate.  The  remaining  feet  are  almost  covered 
with  long  dark-coloured  hair.  The  abdomen  of  the  male  has  the  last  joint  somewhat 
produced.    That  of  the  female  is  very  large  and  protuberant. 
Colour  above  rich  reddish  brown,  somewhat  mottled  with  yellowish,  particularly  in 
young  specimens ;  beneath  red  mottled  with  yellow. 
Length  of  the  largest  specimen  which  Mr.  Cuming  brought  home  4  inches,  breadth  d-^. 
This  very  handsome  species  was  taken  by  Mr.  Cuming  at  Valparaiso  in  deep  water 
about  rocks.  I  have  also  received  a  young  specimen  from  Mr.  Miller,  who  assigns  to 
it  a  similar  habitat. 
4.  Cancer  irroratus,  Say^. 
Tab.  XLVI. 
Cane,  testa  leviter  granulatd ;  margine  antico -later ali  decem-lobato,  lobis  contiguis,  quadra- 
tis,  ad  marginem  denticulatis ;  manibus  compressis,  dentato-bicristatis. 
Hab.  ad  oras  Floridarum  (Say)  et  Americae  Australis  (Cuming,  Miller). 
Carapax  transversely  oblong,  regularly  elevated ;  the  surface  minutely  granulated ;  the 
regions  but  slightly  distinct.  Latero- anterior  margin  slightly  divided  into  ten  lobes,  the 
anterior  ones  smaller  and  contiguous,  the  posterior  broader  and  slightly  diverging  ;  the 
edges  minutely  denticulated,  each  having  one  or  two  teeth  larger  than  the  rest.  Front 
tridentate,  the  teeth  triangular ;  orbits  oval,  with  a  small  tooth  over  the  inner  canthus, 
but  none  between  the  superior  fissures,  as  in  some  other  species.  External  antenna 
with  the  basilar  joint  flat,  its  inner  margin  a  little  excavated,  and  its  tooth  obtuse. 
Pedipalps  as  in  the  other  species.  Sternum  almost  without  hair,  polished,  numerously 
and  minutely  punctated.  Abdomen  very  slightly  fringed  ;  the  terminal  joint  a  little  pro- 
duced, terminated  by  a  few  longish  hairs.  Anterior  feet  compressed,  angular,  the  wrist 
with  a  sharp  spine  above,  projecting  over  the  base  of  the  hand ;  the  hands  compressed, 
somewhat  inflexed,  crested,  the  crest  denticulated,  the  external  surface  with  five  longi- 
tudinal elevated  granular  lines.    The  remaining  legs  slender,  very  long,  compressed, 
'  Journ.  Acad.  Ent.  Sci,  Phil.,  vol.  i.  p.  59.  t.  4.  f.  2. 
