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  XVIII. 
  On 
  the 
  South 
  American 
  species 
  of 
  Diabrotica. 
  

   Part 
  11. 
  By 
  Charles 
  J. 
  Gahan, 
  M.A., 
  F.E.S., 
  

   Assistant 
  in 
  the 
  Zoological 
  Department, 
  British 
  

  

  Museum. 
  

  

  [Bead 
  July 
  1st, 
  1891.] 
  

  

  The 
  present 
  paper 
  is 
  intended 
  to 
  serve 
  as 
  a 
  continuation 
  

   of 
  one 
  on 
  the 
  same 
  subject 
  by 
  the 
  late 
  Mr. 
  Joseph 
  S. 
  

   Baly, 
  F.L.S., 
  &c., 
  which 
  appeared 
  in 
  the 
  first 
  Part 
  of 
  the 
  

   ' 
  Transactions' 
  of 
  this 
  Society 
  for 
  the 
  year 
  1890. 
  

  

  A 
  few 
  words 
  in 
  explanation 
  of 
  the 
  circumstances 
  

   under 
  which 
  I 
  have 
  been 
  induced 
  to 
  write 
  it 
  may 
  not 
  be 
  

   out 
  of 
  place. 
  Mr. 
  Baly's 
  collection 
  of 
  Galerucidce 
  having 
  

   passed 
  into 
  the 
  possession 
  of 
  the 
  British 
  Museum, 
  I 
  

   have 
  been 
  entrusted 
  with 
  its 
  arrangement 
  and 
  incorpora- 
  

   tion. 
  A 
  number 
  of 
  manuscript 
  descriptions 
  of 
  species 
  — 
  

   the 
  result 
  of 
  Mr. 
  Baly's 
  work 
  towards 
  a 
  completion 
  of 
  

   his 
  monograph 
  — 
  was 
  handed 
  over 
  to 
  my 
  care. 
  As 
  this 
  

   manuscript 
  was 
  in 
  an 
  unfinished 
  state, 
  and 
  without 
  

   arrangement, 
  it 
  could 
  not 
  with 
  advantage 
  be 
  presented 
  

   for 
  publication. 
  I 
  have 
  endeavoured 
  instead 
  to 
  complete 
  

   this 
  second 
  part 
  of 
  the 
  paper, 
  and 
  have 
  included 
  in 
  it 
  

   nearly 
  all 
  of 
  Mr. 
  Baly's 
  manuscript 
  descriptions. 
  These 
  

   are 
  clearly 
  indicated 
  in 
  the 
  text, 
  so 
  that 
  Mr. 
  Baly's 
  

   share 
  of 
  the 
  work 
  may 
  be 
  easily 
  distinguished 
  from 
  my 
  

   own. 
  I 
  have 
  omitted 
  a 
  few 
  descriptions, 
  having 
  been 
  

   unable 
  in 
  such 
  cases 
  to 
  satisfy 
  myself 
  as 
  to 
  the 
  identity 
  

   of 
  the 
  species. 
  Except 
  in 
  a 
  few 
  instances, 
  I 
  have 
  had 
  to 
  

   add 
  the 
  references 
  to 
  previously 
  published 
  short 
  diagnoses 
  

   or 
  descriptions. 
  

  

  In 
  the 
  arrangement 
  of 
  the 
  species 
  I 
  have 
  endeavoured 
  

   to 
  make 
  use, 
  as 
  far 
  as 
  possible, 
  of 
  structural 
  characters. 
  

   In 
  grouping 
  many 
  of 
  the 
  species, 
  however, 
  I 
  have 
  had 
  

   to 
  rely 
  upon 
  a 
  general 
  resemblance 
  in 
  facies 
  or 
  colora- 
  

   tion. 
  

  

  TRANTS. 
  ENT. 
  SOC. 
  LOND. 
  1891. 
  PART 
  III. 
  (OCT.) 
  

  

  