﻿art. 
  1 
  AMERICAN 
  PLOIAMINAE 
  McATEE 
  AND 
  MALLOCH 
  131 
  

  

  The 
  four 
  genotypes 
  accepted 
  by 
  Kirkaldy 
  from 
  the 
  earlier 
  work 
  

   are 
  here 
  listed 
  with 
  comment 
  on 
  their 
  treatment 
  in 
  the 
  later. 
  

  

  1794 
  1S03 
  

  

  1. 
  Coreus 
  scapha 
  Given 
  a 
  much 
  shorter 
  though 
  structural 
  de- 
  

  

  scription. 
  

  

  2. 
  Lygaeus 
  valgus 
  The 
  structural 
  description 
  is 
  transferred 
  to 
  tene- 
  

  

  prosus. 
  

  

  3. 
  Miris 
  dolabratus 
  No 
  species 
  has 
  a 
  structural 
  description. 
  

  

  4. 
  Gerris 
  lacustris 
  Species 
  is 
  transferred 
  to 
  Hydrometra 
  retaining 
  

  

  the 
  structural 
  description. 
  

  

  Again 
  we 
  would 
  repeat 
  the 
  question, 
  Does 
  this 
  look 
  like 
  type 
  fixa- 
  

   tion?, 
  and 
  again 
  we 
  answer, 
  It 
  does 
  not. 
  If 
  Fabricius 
  had 
  been 
  fixing 
  

   genotypes 
  he 
  would 
  not 
  have 
  altered 
  his 
  choice 
  from 
  a 
  certain 
  species 
  

   in 
  his 
  earlier 
  to 
  'another 
  in 
  the 
  later 
  work 
  (2) 
  ; 
  after 
  selecting 
  a 
  type 
  

   in 
  the 
  former 
  treatise 
  he 
  would 
  not 
  have 
  left 
  a 
  genus 
  entirely 
  with- 
  

   out 
  one 
  in 
  the 
  latter 
  (3) 
  ; 
  nor 
  would 
  he 
  have 
  attempted 
  to 
  make 
  the 
  

   same 
  species 
  serve 
  as 
  type 
  for 
  two 
  different 
  genera 
  (4). 
  

  

  It 
  has 
  been 
  asserted 
  that 
  Fabricius 
  somewhere 
  has 
  mentioned 
  his 
  

   intention 
  of 
  selecting 
  genotj^pes, 
  and 
  that 
  Fallen 
  says 
  he 
  did, 
  etc. 
  We 
  

   have 
  examined 
  the 
  Philosophia 
  Entomologica, 
  1778, 
  and 
  there 
  is 
  

   nothing 
  in 
  it 
  to 
  indicate 
  that 
  Fabricius 
  had 
  any 
  conception 
  of 
  geno- 
  

   types. 
  He 
  says 
  nothing 
  about 
  selecting 
  types 
  in 
  the 
  Systema 
  Rhyn- 
  

   gotorum 
  so 
  the 
  requirements 
  of 
  the 
  International 
  Code 
  of 
  Nomen- 
  

   clature, 
  that 
  type 
  fixation 
  must 
  be 
  definite, 
  are 
  not 
  met. 
  What 
  Fa- 
  

   bricius 
  or 
  any 
  other 
  'author 
  may 
  have 
  thought 
  or 
  said 
  subsequent 
  ito 
  

   publication 
  has 
  no 
  effect 
  on 
  nomenclatorial 
  practice. 
  

  

  