Besides  these  Dudley  (Phil.  Trans,  xxxiii  259)  described
"a  Scrag  Whale,"  which  he  says  "is  near  akin  to  the  Fin-
back, but  instead  of  a  fin  upon  its  back,  the  ridge  of  the
after  part  of  its  back  is  scragged,  with  half-a-dozen  knobs
or  knuckles.  He  is  nearest  the  Right  IVliale  in  figure  and
quantity  of  oil.  His  bone  (whalebone)  is  white,  but  wont
split."

Cuvier  thought  the  Scrag  Whale  [B.  gibbosa)  was  only  a
Rorqual  (Oss.  Foss.  v.  267)  which  had  been  mutilated,  but
1  susjject,  from  Dudley's  account  of  the  form,  that  it  must
be  a  Bahena,  probably  well  known  formerly.
Bonnaterre,  and  all  succeeding  authors,  have  referred  to
this  genus,  the  Hump-backed  Whale  of  Dudley,  not  under-
standing his  description  of  the  belly  "  being  reeved,"  that
is,  plaited  ;  they  call  it  B.  nodosa.
2.  Megapteea.    Hump-b.\cked  Whales.
Balaenoptera,  part,  Lacep.     B.  nodosa,  Bonat.
Head  broad,  moderate,  flattened.  Throat  and  chest  with
deep  longitudinal  folds.  Dorsal  fins  low  or  tuberous,  ra-
ther behind  the  middle  of  the  body.  The  pectoral  very
large,  -j  to  t  the  entire  length  of  the  animal,  as  long  as  the
head,  consisting  of  only  four  fingers.  The  eyes  rather
above  the  angle  of  the  mouth.  The  navel  is  rather
before  the    front    edge,    the  male  organs  under  the  back


edge  of  the  dorsal,  and  the  vent  rather  nearer  the  tail,
and  the  female  organs  are  rather  behind  the  back  edge
of  the  dorsal,  with  the  vent  at  its  hinder  end.  Skull,
nose  narrow,  broad  behind,  and  contracted  in  front.
Temporal  bone  broad.  Inlerorbital  space  wide.  Lower
jaw  much  arched. — Ckv.  Oss.  Foss.  v.  t.  26,/.  1,  3.
