﻿770 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  angustata, 
  basi 
  utrimque 
  obli(]ue 
  tnmcata, 
  tertia 
  triangulari, 
  basi 
  .nigiilum 
  aciitum 
  

   formante. 
  (See 
  Figs. 
  142, 
  143, 
  144.) 
  

  

  Still's 
  description 
  was 
  made 
  from 
  a 
  male 
  specimen 
  taken 
  at 
  Sitka, 
  

   Alaska, 
  and 
  1 
  am 
  not 
  aware 
  that 
  it 
  has 
  ever 
  been 
  reported 
  by 
  anyone 
  

   since 
  its 
  description. 
  

  

  Mr. 
  Clermont 
  Livingston, 
  of 
  Oorfield, 
  Vancouver 
  Island, 
  recently 
  sent 
  

   a 
  large 
  quantity 
  of 
  insects 
  that 
  he 
  took 
  sweeping 
  various 
  plants, 
  and 
  in 
  

   the 
  lot 
  were 
  a 
  large 
  number 
  of 
  specimens 
  of 
  T. 
  commissuraUs. 
  Accord- 
  

   ing 
  to 
  Mr. 
  Livingston's 
  notes 
  the 
  specimens 
  of 
  this 
  species 
  were 
  taken 
  

   from 
  alder, 
  willow, 
  and 
  weeds. 
  

   The 
  black 
  commissural 
  line 
  is 
  present 
  in 
  a 
  number 
  of 
  specimens, 
  both 
  

   male 
  and 
  female, 
  but 
  the 
  greater 
  i)ro])ortion 
  have 
  no 
  

   dark 
  marking 
  upon 
  the 
  elytra 
  at 
  all, 
  and 
  resemble 
  

   T. 
  rosw 
  so 
  perfectly 
  that 
  I 
  can 
  separate 
  the 
  species 
  

   only 
  by 
  the 
  difference 
  in 
  size, 
  rosw 
  not 
  exceeding 
  3 
  J 
  mm., 
  

   while 
  commissuraUs 
  measures 
  from 
  3f 
  to 
  nearly 
  5 
  mm. 
  

  

  The 
  only 
  other 
  

   representatives 
  

   of 
  this 
  species 
  

   that 
  I 
  have 
  seen 
  

   were 
  taken 
  by 
  

   myself 
  at 
  Cim- 
  

   arron, 
  Colorado, 
  

   August 
  213, 
  from 
  

   alder, 
  Alnus 
  viri- 
  

   dis. 
  They 
  were 
  

   taken 
  along 
  with 
  

   numerous 
  speci- 
  

   mens 
  of 
  Empo- 
  

   asca 
  atrolabesand 
  

   E. 
  smaragdnhi. 
  

   A 
  specimen 
  of 
  

   TypMocyha 
  callosa 
  Then, 
  sent 
  me 
  by 
  Doctor 
  Melichar 
  seems 
  identical 
  

   with 
  commissuraUs, 
  as 
  do 
  examples 
  of 
  T. 
  cratwgi 
  Douglas, 
  that 
  I 
  have 
  

   examined 
  from 
  Europe. 
  

  

  Figs. 
  142, 
  143 
  and 
  144.— 
  Vertex 
  and 
  pronotum, 
  elytron, 
  and 
  wing 
  of 
  

  

  TYPHLOCYBA 
  COMMISSURALIS. 
  

  

  TYPHLOCYBA 
  TENERRIMA 
  Herrich-Schaffer. 
  

  

  This 
  is 
  also 
  an 
  European 
  species, 
  the 
  description 
  of 
  whicli 
  I 
  have 
  

   not 
  seen. 
  I 
  determined 
  my 
  specimens 
  by 
  comparison 
  with 
  named 
  

   European 
  specimens 
  sent 
  me 
  by 
  Mr. 
  E. 
  P. 
  Van 
  Duzee, 
  and 
  I 
  also 
  sent 
  

   specimens 
  to 
  Doctor 
  Melichar, 
  who 
  assured 
  me 
  that 
  my 
  determinations 
  

   were 
  correct. 
  ' 
  

  

  This 
  is 
  a 
  very 
  slender 
  pale-yellow 
  species, 
  a 
  trifle 
  more 
  than 
  ."> 
  mm. 
  

   in 
  length. 
  There 
  is 
  a 
  row 
  of 
  dusky 
  blotches 
  on 
  the 
  elytron 
  just 
  before 
  

  

  ' 
  A 
  description 
  in 
  German 
  may 
  be 
  found 
  in 
  Cicadinen 
  von 
  Mittel-Europa, 
  p. 
  349, 
  

   by 
  L. 
  Melichar. 
  

  

  1 
  

  

  