﻿690 
  KEPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  exactly 
  with 
  Dr. 
  Scudder's 
  description 
  of 
  pellucida 
  than 
  with 
  that 
  of 
  

   atrox, 
  with 
  the 
  exception 
  given." 
  

  

  I 
  am 
  inclined, 
  from 
  the 
  reasons 
  above 
  given, 
  to 
  regard 
  atrox 
  as 
  a 
  

   synonym 
  of 
  pellucida, 
  and 
  that 
  its 
  range 
  agrees 
  in 
  the 
  main 
  with 
  that 
  of 
  

   (E. 
  Carolina, 
  which 
  is 
  found 
  on 
  the 
  Pacific 
  coast 
  (Vancouver's 
  Island), 
  

   according'to 
  Walker, 
  and 
  probably 
  Thomas. 
  

  

  Mr. 
  Henry 
  Edwards, 
  of 
  San 
  Francisco, 
  kindly 
  furnishes 
  the 
  following 
  

   notes 
  : 
  

  

  " 
  This 
  species 
  is 
  very 
  abundant 
  in 
  the 
  spring 
  and 
  early 
  summer, 
  but 
  

   at 
  present 
  appears 
  to 
  be 
  somewhat 
  limited 
  in 
  its 
  range 
  as 
  far 
  as 
  Cali- 
  

   fornia 
  is 
  concerned. 
  It 
  is 
  found 
  only 
  in 
  our 
  foothills, 
  and 
  has 
  not, 
  to 
  my 
  

   knowledge 
  at 
  least, 
  been 
  regarded 
  as 
  a 
  very 
  destructive 
  insect. 
  I 
  never 
  

   saw 
  it 
  but 
  once 
  in 
  very 
  large 
  swarms, 
  and 
  it 
  then 
  appeared 
  to 
  attach 
  

   itself 
  more 
  to 
  the 
  pasture 
  grasses 
  than 
  to 
  any 
  growing 
  crops, 
  although 
  

   there 
  were 
  plenty 
  of 
  fields 
  of 
  barley, 
  oats, 
  &c., 
  in 
  the 
  neighborhood. 
  It 
  

   appears 
  in 
  its 
  larval 
  condition 
  in 
  April, 
  and 
  in 
  the 
  winged 
  state 
  in 
  May, 
  

   passing 
  entirely 
  out 
  of 
  existence 
  by 
  the 
  middle 
  of 
  June. 
  I 
  have 
  taken 
  

   it 
  sparingly 
  in 
  ]!^evada 
  and 
  in 
  Vancouver 
  Island, 
  and 
  have 
  seen 
  some 
  

   specimens 
  from 
  Santa 
  Rosa 
  Island, 
  bat 
  I 
  am 
  pretty 
  sure 
  that 
  it 
  cannot 
  

   be 
  called 
  a 
  common 
  insect 
  in 
  those 
  localities." 
  

  

  Descripti{m 
  of 
  the 
  adult. 
  — 
  Head 
  uniform, 
  pale 
  brownish-j'ellow 
  ; 
  the 
  raised 
  edge 
  of 
  

   the 
  vertex 
  dotted 
  with 
  fuscous 
  ; 
  a 
  dark 
  fuscous 
  spot 
  behind 
  the 
  eye, 
  broadening 
  poste- 
  

   riorly, 
  but 
  not 
  extending 
  upon 
  the 
  j)ronotum. 
  Antennse 
  as 
  long 
  as 
  the 
  head 
  and 
  pro- 
  

   notum 
  together, 
  dull 
  honey-yellow, 
  growing 
  dusky 
  toward 
  the 
  tip. 
  Pronotum 
  dark 
  

   brownish-yellow, 
  the 
  sides 
  darker 
  anteriorly 
  ; 
  median 
  carina 
  extending 
  the 
  whole 
  

   length 
  of 
  the 
  pronotum, 
  moderately 
  raised, 
  cut 
  once 
  by 
  a 
  transverse 
  line 
  a 
  little 
  in 
  

   advance 
  of 
  the 
  middle 
  ; 
  lateral 
  carinas 
  prominent, 
  extending 
  across 
  the 
  anterior 
  two- 
  

   thirds 
  of 
  the 
  pronotum 
  ; 
  anterior 
  border 
  of 
  the 
  pronotum 
  smooth, 
  very 
  slightly 
  angu- 
  

   lated 
  ; 
  posterior 
  border 
  delicately 
  marginate, 
  bent 
  at 
  a 
  very 
  little 
  more 
  than 
  a 
  right 
  

   angle, 
  the 
  apex 
  rounded 
  ; 
  tegmina 
  dull-yellowish 
  on 
  the 
  basal 
  half, 
  with 
  distinct 
  

   fuscous 
  spots 
  ; 
  toward 
  the 
  apex 
  obscurely 
  fuscous, 
  with 
  indistinct 
  fuscous 
  markings 
  ; 
  

   humeral 
  ridge 
  yellowish, 
  and, 
  when 
  the 
  tegmina 
  are 
  in 
  repose, 
  inclosing 
  a 
  brownish 
  

   fuscous 
  triangular 
  stripe 
  ; 
  the 
  spots 
  are 
  scattered 
  mostly 
  in 
  the 
  median 
  held, 
  consist- 
  

   ing 
  in 
  the 
  basal 
  two-fifths 
  of 
  the 
  tegmina 
  of 
  small 
  roundish 
  spots, 
  and 
  one 
  larger 
  

   longitudinal 
  spot 
  in 
  the 
  middle 
  of 
  the 
  basal 
  half; 
  there 
  is 
  a 
  large 
  irregular 
  spot 
  in 
  the 
  

   middle 
  of 
  the 
  tegmina, 
  and 
  beyond 
  a 
  smaller 
  transverse 
  spot, 
  followed 
  by 
  indistinct 
  

   markings; 
  wings 
  hyaline, 
  slightly 
  fuliginous 
  at 
  the 
  extreme 
  tip 
  ; 
  the 
  veins, 
  especially 
  

   in 
  the 
  apical 
  half, 
  fuscous 
  ; 
  legs 
  uniform 
  brownish 
  fuscous 
  ; 
  apical 
  half 
  of 
  spines 
  of 
  

   hind 
  tibiiB 
  black. 
  

  

  Length 
  of 
  body, 
  0.9 
  inch 
  ; 
  of 
  tegmina, 
  0.9 
  inch; 
  of 
  body 
  and 
  tegmina, 
  1.125 
  inches; 
  

   of 
  pronotum, 
  0.2 
  inch 
  ; 
  of 
  hind 
  femora, 
  0.5 
  inch. 
  

  

  It 
  bears 
  a 
  strong 
  resemblance 
  to 
  (Edipoda 
  pellucida, 
  Scudd., 
  common 
  in 
  Northern 
  New 
  

   England. 
  — 
  (Scudder 
  in 
  Hayden's 
  Geological 
  Report 
  on 
  Nebraska, 
  1872, 
  p. 
  250.) 
  

  

  The 
  American 
  Locust, 
  Acrydium 
  americanum 
  Drury 
  (Plate 
  LXIV, 
  Fig. 
  6.) 
  

   This 
  is 
  one 
  of 
  our 
  largest 
  grasshoppers, 
  being 
  a 
  little 
  over 
  two 
  inches 
  

   in 
  length. 
  It 
  is 
  occasionally 
  very 
  destructive 
  to 
  vegetation 
  in 
  the 
  

   Southern 
  States. 
  According 
  to 
  Professor 
  Thomas 
  it 
  occurs 
  in 
  North 
  

   Carolina, 
  Southern 
  States, 
  Florida, 
  Alabama, 
  Texas 
  (Scudder) 
  ; 
  Illinois, 
  

   Tennessee, 
  Mississippi, 
  District 
  of 
  Columbia 
  (Thomas) 
  ; 
  Virginia, 
  New 
  

   York 
  (TOrury). 
  I 
  have 
  observed 
  it 
  very 
  abundantly 
  in 
  Virginia, 
  at 
  Dan- 
  

   ville, 
  in 
  April 
  and 
  early 
  in 
  May. 
  The 
  figure 
  (after 
  Eiley) 
  is 
  so 
  good 
  

   that 
  further 
  description 
  is 
  unnecessary. 
  

  

  In 
  the 
  pupa 
  state 
  this 
  species 
  is 
  occasionally 
  destructive. 
  I 
  have 
  re- 
  

   ceived 
  from 
  Prof. 
  D. 
  S. 
  Jordan 
  specimens 
  which 
  I 
  regard 
  as 
  the 
  pupse 
  

   of 
  this 
  species, 
  with 
  the 
  following 
  notes 
  on 
  its 
  habits 
  : 
  -^ 
  

  

  " 
  While 
  seining 
  in 
  Eome, 
  Ga., 
  in 
  the 
  Etowah 
  River, 
  I 
  noticed, 
  about 
  

   July 
  25, 
  a 
  fence 
  covered 
  completely 
  with 
  large 
  grasshoppers 
  not 
  fully 
  

   fledged 
  and 
  extremely 
  brilliant 
  in 
  color. 
  They 
  were 
  very 
  hyaline 
  and 
  of 
  

   all 
  shades 
  from 
  a 
  clear 
  pea- 
  green 
  to 
  pale 
  clear 
  yellow 
  and 
  a 
  sort 
  of 
  clear 
  

   reddish 
  amber 
  (scarcely 
  any 
  two 
  the 
  same 
  ; 
  all 
  become 
  pale 
  yellow 
  in 
  

  

  