Swedish  naturalists  of  the  present  day,  it  should  be
remarked,  would  seem  to  negative  the  existence  of  the
C.  Dobula  in  Scandinavia  as  a  distinct  species.  Ekstrom
considers  it  identical  with  the  Chub  (C.  Cephalus,  Linn.),
with  which  it  must  be  admitted  its  characteristics  in  the
main  agree ;  and  Nilsson,  when  speaking  of  it  in  his  "  Pro-
dromus,"  designates  it  the  Dick-kopp,  signifying  thick-head,
the  name  by  which  the  chub  is  known  near  Gothenburg.
Kroyer  also  doubts  its  existence  as  a  separate  species  in  the
peninsula.
The  fin-ray  formula  exhibits  the  distinctions  observed
between  the  Dobule  Roach  and  the  Chub :


I).
p.
V.
Dobula       ..
.  10

10

10

English  chub

.     9

15

8

11 ;  scales  on  the  lateral  line  45.
9  ;  scales,  &c.,  45.
B4  THE   CHUB.
The  dobule  roach,  or  what  Mr.  Yarrell,  who  examined
several  specimens  brought  from  the  Wenem,  and  myself
considered  to  be  such,  was  common  as  well  in  that  lake  as
the  Gotha.
Of  its  habits  little  or  nothing  seemed  to  be  known  in  my
vicinity,  and  this  from  the  resemblance  it  bears  to  the  common
roach,  with  which  indeed  the  fishermen,  until  the  difference
was  pointed  out  to  them  by  me,  always  appeared  to  identify  it.
As  a  consequence,  it  had  no  specific  name  with  us ;  but  in
the  Falkenberg  River,  which  is  upwards  of  one  hundred  miles
to  the  southward  of  the  Wenern,  it  is  called  the  Har-nackey
or  something  similar.
In  my  neighbourhood  I  only  remember  seeing  it  captured
in  nets,  or  on  night-lines  laid  out  for  pike,  perch,  &c.,  to
which  an  odd  one  was  at  times  found  appended.  But  in  the
Falkenberg  River,. where  ide  are  also  plentiful,  it  is  commonly
taken  with  the  fly.
