﻿762 
  

  

  PROCEEDiyc.S 
  OF 
  THE 
  NATIONAL 
  MlSEl'M. 
  

  

  Fig. 
  122. 
  

  

  -Elytron 
  of 
  typhlocyba 
  comes, 
  var. 
  

  

  ZICZAC. 
  

  

  foruiiiig 
  atriiingle 
  with 
  the 
  two 
  other 
  spots, 
  a 
  bhukspot; 
  a 
  lilood-browii. 
  irrcgnlar. 
  

   broad 
  stripe, 
  coveriug 
  thS 
  hiinierns, 
  thfiice 
  in 
  a 
  zigzag 
  directi<tn 
  to 
  the 
  ihomboidal 
  

   spot; 
  thi'nce 
  to 
  the 
  spot 
  on 
  tiie 
  inferior 
  margin; 
  thence 
  not 
  i|nite 
  attaining 
  the 
  

   terminal 
  dot. 
  Wings 
  hyaline; 
  tips 
  of 
  I'ostal 
  veins 
  often 
  dusky. 
  Length 
  to 
  tip 
  of 
  

   wings 
  a 
  little 
  over 
  one-tenth 
  of 
  .-ui 
  inch. 
  Occurs 
  abundantly 
  on 
  the 
  grapevine. 
  

   (Sec 
  Fig. 
  122.1 
  

  

  Tills 
  is 
  a 
  varietN 
  of 
  coiiie.s 
  in 
  which 
  the 
  red 
  lines 
  and 
  sjwts 
  of 
  the 
  

   elytra 
  run 
  together 
  and 
  are 
  usually 
  of 
  a 
  dull 
  blood-brown 
  or 
  smoky 
  

   color, 
  but 
  among 
  the 
  specimens 
  that 
  ] 
  have 
  examined 
  there 
  is 
  every 
  

  

  possible 
  variation 
  into 
  typical 
  

   comes 
  in 
  one 
  direction 
  and 
  into 
  

   typical 
  ritis 
  in 
  the 
  other. 
  

  

  Mr. 
  Baker 
  and 
  myself 
  have 
  both 
  

   taken 
  this 
  variety 
  here 
  in 
  large 
  

   numbers 
  from 
  Virginiacreeper 
  and 
  

   occasionally 
  on 
  grape; 
  Walsh 
  took 
  his 
  specimens 
  on 
  grape, 
  and 
  Mr. 
  

   Hart, 
  of 
  Illinois, 
  and 
  Professor 
  Davis, 
  of 
  Michigan, 
  have 
  both 
  .sent 
  it 
  

   to 
  me 
  recorded 
  for 
  grape. 
  T 
  also 
  have 
  specimens 
  from 
  I*rofessor 
  H. 
  E. 
  

   Weed, 
  of 
  Mississippi, 
  and 
  Mr. 
  E. 
  1). 
  ]>all, 
  of 
  Ames, 
  Iowa, 
  but 
  do 
  not 
  

   know 
  from 
  what 
  j)lants 
  their 
  si)ecimens 
  were 
  taken. 
  

  

  VARIETY 
  OCTONOTATA 
  Walsh. 
  

  

  Erythroneura 
  octonoiata 
  Walsh, 
  Proc. 
  Bost. 
  Soc. 
  Nat. 
  Hist., 
  IX, 
  p. 
  318, 
  18tU. 
  

   Typhlocyba 
  ocfoii'otafa 
  Woodwokth, 
  Psyche, 
  V, 
  p. 
  213, 
  1889. 
  — 
  Van 
  Dizke, 
  

   Tvans. 
  Am. 
  p]ut. 
  Soc, 
  XXI, 
  p. 
  312, 
  1894. 
  

  

  This 
  is 
  another 
  well 
  marked 
  variety 
  of 
  comes, 
  differing 
  from 
  the 
  typ- 
  

   ical 
  form 
  by 
  having 
  the 
  markings, 
  esjiecially 
  upon 
  the 
  i)osterior 
  half 
  of 
  

   the 
  wing 
  covers, 
  rather 
  faint 
  and 
  by 
  

   having 
  a 
  large 
  spot 
  on 
  the 
  middle 
  of 
  

   the 
  internal 
  margin 
  of 
  the 
  clavus 
  and 
  

   a 
  broad 
  median 
  stripe 
  on 
  the 
  scutellum 
  

   black. 
  The 
  spot 
  on 
  the 
  scutellum 
  is 
  

   sometimes 
  wanting. 
  

  

  This 
  form 
  was 
  described 
  by 
  Walsh 
  

   as 
  follows 
  : 
  

  

  Whitish. 
  Head 
  a-s 
  in 
  the 
  preceding 
  (ziczac 
  ). 
  

   Thorax 
  a 
  little 
  clouded 
  with 
  fuscous. 
  Ab- 
  ^^^^^ 
  ^.,.^ 
  ^^_,^, 
  124.-Elytron 
  and 
  win., 
  of 
  

   dominal 
  and 
  ventral 
  joints 
  in 
  mature 
  speci- 
  typhi,(1(yi!a 
  comus, 
  var. 
  octoxotata. 
  

   mens 
  dusky, 
  except 
  at 
  tip. 
  Tips 
  of 
  tarsi 
  

  

  dusky. 
  Elytra 
  whitish 
  subhyaline, 
  with 
  the 
  same 
  three 
  spots 
  as 
  in 
  the 
  preceding, 
  

   and, 
  in 
  addition, 
  one 
  on 
  the 
  inner 
  margin 
  not 
  far 
  from 
  the 
  base; 
  on 
  the 
  cross 
  veins 
  

   an 
  irregular 
  fuscous 
  liand 
  and 
  on 
  the 
  disk 
  a 
  small 
  brown 
  cloud, 
  ottcu 
  ol)solete. 
  

   Lengtii 
  a 
  little 
  over 
  one-tenth 
  of 
  an 
  inch. 
  (See 
  Figs. 
  123, 
  124.) 
  

  

  Walsh 
  found 
  this 
  s|)ecies 
  in 
  small 
  numbers 
  upon 
  grapevines 
  in 
  com- 
  

   pany 
  with 
  ziczac, 
  vitis, 
  and 
  trivinct<(. 
  

  

  Mr. 
  C. 
  A. 
  Hart, 
  of 
  Cham) 
  aign, 
  Illinois, 
  sent 
  me 
  a 
  (piantity 
  of 
  Typli- 
  

   locibincv, 
  swei)t 
  from 
  grapevines, 
  in 
  which 
  were 
  a 
  large 
  number 
  of 
  

   beautiful 
  specimens 
  of 
  this 
  variet\-. 
  and 
  I 
  also 
  received 
  a 
  considerable 
  

  

  