﻿14 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  67 
  

  

  Described 
  from 
  a 
  single 
  alate 
  viviparous 
  female 
  taken 
  by 
  L. 
  C. 
  

   Bragg 
  on 
  lettuce 
  at 
  Marblehead, 
  Mass., 
  October 
  4, 
  1920. 
  

  

  This 
  species 
  can 
  be 
  distinguished 
  from 
  cosmopolitana 
  on 
  lettuce, 
  

   by 
  its 
  larger 
  size, 
  more 
  numerous 
  sensoria, 
  darker 
  legs, 
  and 
  by 
  its 
  

   lighter 
  colored 
  abdomen 
  without 
  lateral 
  dark 
  patches. 
  

  

  Type. 
  — 
  Deposited 
  in 
  the 
  U. 
  S. 
  National 
  Museum. 
  Cat. 
  No. 
  

   26371. 
  

  

  AMPHOROPHORA 
  BRITTENII 
  (Theobald) 
  

  

  Figs. 
  7-9 
  and 
  62-66 
  

  

  Rhopalosiphum 
  briUenii 
  Theobald, 
  Journ. 
  Econ. 
  Biol., 
  vol. 
  7, 
  1912, 
  p. 
  

   107.— 
  Patch, 
  Maine 
  Agr. 
  Exp. 
  Sta. 
  Bull. 
  225, 
  1914, 
  p. 
  68.— 
  Wilson 
  and 
  

   Vickery, 
  Trans. 
  Wis. 
  Acad. 
  Sci. 
  Arts 
  and 
  Letters, 
  vol. 
  19, 
  pt. 
  1, 
  1918, 
  

   p. 
  46.— 
  Jackson, 
  The 
  Scot. 
  Natur., 
  1917, 
  p. 
  85; 
  1919, 
  p. 
  158. 
  

  

  I 
  have 
  not 
  seen 
  this 
  species. 
  The 
  alate 
  and 
  apterous 
  viviparous 
  

   females 
  are 
  described 
  by 
  Theobald. 
  Miss 
  Jackson 
  (1919) 
  gives 
  a 
  

   description 
  of 
  the 
  oviparous 
  female. 
  

  

  Host 
  plants. 
  — 
  Red 
  and 
  black 
  currants 
  and 
  gooseberries. 
  

  

  Distribution. 
  — 
  England, 
  Scotland, 
  Ireland, 
  and 
  Wales. 
  

  

  Cotypes. 
  — 
  Deposited 
  in 
  Theobald's 
  collection. 
  

  

  AMPHOROPHORA 
  CARDUELLINA 
  (Theobald) 
  

  

  Figs. 
  45-48 
  and 
  67-69 
  

  

  Rhopalosiphum 
  carduellinum 
  Theobald, 
  Bull. 
  Ent. 
  Res., 
  vol. 
  6, 
  1915, 
  p. 
  

   113. 
  — 
  Wilson 
  and 
  Vickery, 
  Trans. 
  Wis. 
  Acad. 
  Sci. 
  Arts 
  and 
  Letters, 
  

   vol. 
  19, 
  pt. 
  1, 
  p. 
  49.— 
  Theobald, 
  Bull. 
  Ent. 
  Res., 
  vol. 
  11, 
  1920, 
  p. 
  67. 
  

  

  In 
  Theobald's 
  first 
  paper 
  he 
  described 
  the 
  alate 
  form 
  of 
  this 
  species 
  

   and 
  also 
  described 
  an 
  apterous 
  form. 
  In 
  his 
  second 
  paper 
  he 
  gave 
  

   another 
  description 
  of 
  an 
  apterous 
  form, 
  stating 
  that 
  his 
  first 
  descrip- 
  

   tion 
  referred 
  to 
  another 
  species. 
  Dr. 
  J. 
  T. 
  Potgieter 
  has 
  shown 
  the 
  

   writer 
  specimens 
  from 
  South 
  Africa 
  which 
  he 
  considers 
  to 
  be 
  this 
  

   species. 
  The 
  apterous 
  form 
  seems 
  to 
  agree 
  more 
  nearly 
  with 
  the 
  

   second 
  description 
  of 
  Theobald 
  than 
  with 
  the 
  first 
  one. 
  Doctor 
  

   Potgieter's 
  specimens 
  however 
  have 
  sensoria 
  on 
  segment 
  V 
  of 
  the 
  

   antennae. 
  These 
  specimens 
  will 
  be 
  fully 
  described 
  in 
  Doctor 
  Pot- 
  

   gieter's 
  forthcoming 
  paper 
  on 
  South 
  African 
  Aphiidae. 
  

  

  The 
  chief 
  difference 
  between 
  this 
  species 
  and 
  cosmopolitana 
  seems 
  

   to 
  be 
  in 
  the 
  presence 
  of 
  sensoria 
  on 
  segment 
  IV 
  and 
  V 
  of 
  the 
  apterous 
  

   form. 
  In 
  a 
  large 
  series 
  of 
  cosmopolitana 
  which 
  I 
  have 
  examined 
  there 
  

   are 
  sensoria 
  only 
  on 
  segment 
  III. 
  The 
  range 
  of 
  sensoria 
  on 
  segment 
  

   III 
  of 
  corduellina 
  seems 
  to 
  be 
  somewhat 
  greater 
  while 
  in 
  the 
  alate 
  

   form 
  the 
  range 
  on 
  segment 
  III 
  seems 
  to 
  be 
  somewhat 
  less 
  than 
  in 
  

   cosmopolitana. 
  

  

  The 
  cotype 
  specimens 
  were 
  taken 
  on 
  Carduus 
  species 
  in 
  Transvaal 
  

   in 
  1914. 
  Those 
  belonging 
  to 
  Doctor 
  Potgieter 
  were 
  taken 
  on 
  Sonchus 
  

   species. 
  

  

  