﻿734 
  rKOCEElUNdS 
  of 
  the 
  XAriOXAL 
  MUSEUM. 
  

  

  I 
  bave 
  repeatedly 
  taken 
  this 
  species 
  ou 
  willow 
  near 
  Fort 
  Collins 
  and 
  

   have 
  specimens 
  taken 
  by 
  Mr. 
  Baker 
  near 
  this 
  place 
  on 
  alfalfa, 
  and 
  at 
  

   Steam 
  Boat 
  Springs 
  in 
  general 
  sweeping, 
  and 
  by 
  Master 
  Carlos 
  Stan- 
  

   nard 
  at 
  this 
  place 
  in 
  general 
  sweeping. 
  

  

  A 
  nnmber 
  of 
  si)ecimens 
  from 
  Mr. 
  C. 
  A. 
  Hart 
  are 
  nnder 
  size, 
  being- 
  

   only 
  about 
  3.75 
  mm. 
  in 
  length 
  bnt 
  I 
  can 
  lind 
  no 
  other 
  differences 
  npon 
  

   Avliich 
  to 
  separate 
  these 
  small 
  individuals 
  from 
  others. 
  

  

  It 
  is 
  possible 
  that 
  on 
  receiving 
  more 
  material 
  from 
  the 
  northwest 
  

   this 
  species 
  will 
  be 
  found 
  to 
  be 
  synonymous 
  with 
  j)?r>-rt 
  (Stal). 
  

  

  EMPOASCA 
  PURA 
  Stal. 
  

  

  Typhlocjfha 
  pnra 
  StIl, 
  Stett. 
  Ent. 
  Zeit.. 
  XIX, 
  p. 
  195, 
  1858. 
  

  

  Chlorita 
  piira 
  Fieber, 
  Kat. 
  d. 
  ear. 
  Cicacl.,p. 
  14, 
  1872.— 
  Putox, 
  C;it. 
  d. 
  Hemip., 
  

  

  p. 
  87, 
  1886. 
  

   Empoasca 
  piirn 
  "Woodwohtii, 
  Psvcbe. 
  V. 
  p. 
  213, 
  188'J. 
  — 
  Van 
  Uuzee, 
  Trans. 
  Am. 
  

  

  Ent. 
  Soc. 
  p. 
  310. 
  1891. 
  

  

  Stal 
  describes 
  this 
  species 
  as 
  follows: 
  

  

  l>ilut»' 
  sul)<)livact'0-llava; 
  alulomino 
  iiallide 
  viresceutc, 
  tibiits 
  apiccm 
  versus 
  tarsis- 
  

   qne 
  prasiuis; 
  tegniiuilms 
  llavescente-hyaliuns, 
  liasi 
  etapicem 
  versus 
  snbdecoloribus. 
  

   arcolis 
  apicalibns 
  1, 
  seouuda 
  {a 
  couimissura) 
  parallela, 
  tertia 
  

   apiceui 
  versus 
  latoire. 
  ^ 
  Long. 
  3f.. 
  Lat. 
  f 
  mm.. 
  Tab. 
  I, 
  fig. 
  5. 
  Sitka. 
  

   Tegminiaabdoniineduploferelongiora, 
  ajiicerotuudata. 
  areolis, 
  

   apicalibus 
  elongatis 
  4, 
  (]uarum 
  1 
  (a 
  commissura) 
  ebmgato-triau- 
  

   gulari 
  basi 
  reli(iuis 
  latiore, 
  2 
  iiarallela. 
  3 
  basi 
  secuuda 
  uonnibii 
  

   angustiorc, 
  apicem 
  versus 
  sensim 
  nonnihil 
  latiore. 
  Alae 
  dilute 
  

   Fig. 
  C4.— 
  Vertex 
  ]acteae, 
  subvitreae, 
  posterius 
  ab 
  apioe 
  limbatae, 
  in 
  parte 
  antica 
  

   venis 
  3 
  parallelis 
  instructae, 
  quarum 
  2 
  anticis 
  magis 
  approximatis, 
  

   pone 
  medium 
  ad 
  nnam 
  confllnentibus. 
  (See 
  Fig. 
  64.) 
  

  

  I 
  have 
  seen 
  but 
  one 
  specimen 
  that 
  I 
  could 
  refer 
  to 
  this 
  species 
  and 
  

   that 
  is 
  in 
  the 
  collection 
  of 
  Mr. 
  C. 
  F. 
  Baker, 
  and 
  was 
  taken 
  by 
  Mr. 
  Cler- 
  

   mont 
  Livingston 
  at 
  Corfleld, 
  Vancouver 
  Island, 
  npon 
  marsh 
  grass 
  in 
  

   the 
  latter 
  part 
  of 
  August. 
  

  

  While 
  in 
  general 
  appearance 
  this 
  insect 
  resembles 
  obfnsa, 
  it 
  has 
  a 
  

   much 
  more 
  produced 
  vertex 
  and 
  the 
  outer 
  apical 
  cell 
  of 
  the 
  elytron 
  is 
  

   not 
  pedunculated 
  as 
  it 
  is 
  in 
  all 
  the 
  specimens 
  of 
  ohtusa 
  that 
  I 
  have 
  seen, 
  

   Tlie 
  last 
  ventral 
  segment 
  is 
  produced 
  and 
  entire 
  as 
  in 
  ohtusa. 
  A 
  large 
  

   series 
  might 
  connect 
  these 
  forms, 
  but 
  I 
  do 
  not 
  think 
  it 
  probable. 
  

  

  EMPOASCA 
  DENTICULA, 
  new 
  species. 
  

  

  Pale 
  yellowish 
  green, 
  vertex 
  broadly 
  rounded. 
  Length, 
  A 
  mm. 
  

  

  Face 
  pale 
  yellowish, 
  shading 
  into 
  greenish 
  below 
  in 
  some 
  specimens, 
  

   without 
  distinct 
  markings; 
  clypeus 
  exceeding 
  the 
  genae 
  by 
  about 
  one- 
  

   third 
  of 
  its 
  own 
  length, 
  rather 
  narrow, 
  and 
  almost 
  exactly 
  one-third 
  of 
  

   the 
  entire 
  length 
  of 
  the 
  face; 
  the 
  length 
  of 
  the 
  face 
  hardly 
  exceeding 
  

   the 
  width. 
  Vertex 
  evenly 
  rounded, 
  not 
  at 
  all 
  produced, 
  and 
  yellowish 
  

   in 
  color. 
  Pronotum 
  distinctly 
  broader 
  than 
  the 
  head 
  and 
  less 
  than 
  

   twice 
  as 
  wide 
  as 
  long, 
  with 
  or 
  without 
  indistinct 
  whitish 
  markings 
  on 
  a 
  

   yellow 
  or 
  greenish 
  yellow 
  field. 
  Scutellum 
  yellowish 
  or 
  greenish, 
  with 
  

  

  AND 
  PRONOTUIM 
  OF 
  

   EMPOASCA 
  PUHA. 
  

  

  