﻿56 
  Senate 
  

  

  Var. 
  a. 
  Spots 
  on 
  the 
  thorax 
  sanguineous. 
  No. 
  745. 
  

   5. 
  Thorax 
  with 
  two 
  black 
  spots 
  at 
  its 
  base. 
  No. 
  

   746. 
  

  

  c. 
  Thorax 
  margined 
  with 
  black 
  at 
  its 
  base. 
  No. 
  

  

  747, 
  

  

  d. 
  Disk 
  and 
  base 
  of 
  thorax 
  green, 
  immaculate. 
  

  

  No. 
  748. 
  

  

  e. 
  Thorax 
  with 
  a 
  green 
  mark 
  shaped 
  like 
  a 
  tri- 
  

  

  dent, 
  based 
  on 
  its 
  posterior 
  margin. 
  No. 
  749. 
  

  

  AULACIZES, 
  Amy. 
  and 
  Serv. 
  

  

  Tender-footed 
  Aulacizes, 
  Jl. 
  mollipes^ 
  (Say.) 
  Jour. 
  Acad. 
  Nat. 
  

   Sci., 
  vi. 
  312. 
  Common 
  on 
  the 
  grass 
  of 
  meadows 
  and 
  

   pastures. 
  No. 
  750, 
  male 
  ; 
  751, 
  female. 
  

  

  New- 
  York 
  Aulacizes, 
  *J1. 
  noveboracensis. 
  Yellow 
  ; 
  elytra 
  and 
  

   large 
  spot 
  at 
  the 
  base 
  of 
  the 
  thorax, 
  olive-green 
  ; 
  no 
  

   black 
  vitta 
  on 
  the 
  sides 
  of 
  the 
  pectus; 
  head 
  shorter, 
  

   broader, 
  and 
  its 
  apex 
  more 
  obtuse, 
  than 
  in 
  7nollipes. 
  

   Length, 
  0-33. 
  Rare. 
  On 
  grass 
  in 
  meadows. 
  No. 
  752, 
  

   female. 
  

  

  *HELOCHARA. 
  

   [Gr. 
  sXogj 
  a 
  marsh, 
  xaipw, 
  to 
  rejoice.) 
  Head 
  obtuse-triangular, 
  

   broader 
  than 
  long, 
  slightly 
  broader 
  than 
  the 
  thorax, 
  the 
  trans- 
  

   versely-striated 
  front 
  reflected 
  over 
  on 
  to 
  the 
  anterior 
  sides 
  of 
  

   the 
  vertex 
  j 
  vertex 
  with 
  a 
  slight 
  longitudinal 
  stria 
  ; 
  ocelli 
  on 
  the 
  

   vertex, 
  farther 
  from 
  each 
  other 
  than 
  from 
  the 
  eyes 
  ; 
  tips 
  of 
  the 
  

   male 
  antennae 
  knobbed 
  ; 
  elytra 
  with 
  five 
  terminal 
  and 
  three 
  dis- 
  

   coidal 
  cells. 
  By 
  its 
  knobbed 
  antennae, 
  this 
  genus 
  occupies 
  a 
  

   similar 
  rank 
  in 
  the 
  sub-family 
  Tettigonidesj 
  that 
  Idiocerus 
  does 
  in 
  

   that 
  of 
  Jassides, 
  

  

  Common 
  Helochara, 
  *H. 
  communis. 
  Dark 
  green 
  ; 
  females 
  grass- 
  

   green, 
  when 
  faded 
  variously 
  mottled 
  with 
  tawny 
  yel- 
  

   low 
  ; 
  beneath, 
  more 
  or 
  lesl" 
  black, 
  legs 
  testaceous. 
  

   Length, 
  0-20. 
  On 
  grass 
  in 
  marshy 
  situations, 
  often 
  ex- 
  

   cessively 
  numerous. 
  No. 
  753, 
  male 
  ; 
  754, 
  female. 
  

  

  Var. 
  a. 
  The 
  usual 
  transverse 
  row 
  of 
  large 
  punctures 
  

   on 
  the 
  foreside 
  of 
  the 
  thorax 
  obsolete. 
  No. 
  755. 
  

  

  