﻿f! 
  

  

  768 
  EEPOET 
  DNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  beyond 
  the 
  ely.tra, 
  nearly 
  meeting 
  on 
  the 
  median 
  line 
  of 
  the 
  body. 
  The 
  eyes 
  are 
  dark 
  

   and 
  conspicuous, 
  being 
  red, 
  horseshoe-like 
  spots. 
  The 
  antennae 
  are 
  laid 
  upward 
  and 
  

   backward 
  on 
  the 
  base 
  of 
  the 
  elytra 
  and 
  behind 
  the 
  legs. 
  The 
  tip 
  of 
  the 
  abdomen 
  is- 
  

   smooth 
  and 
  unarmed. 
  Length, 
  0.17 
  of 
  an 
  inch. 
  

  

  The 
  chrysalis 
  lies 
  in 
  a 
  cavity 
  in 
  the 
  bean 
  just 
  large 
  enough 
  to 
  receive 
  

   its 
  body, 
  there 
  being 
  as 
  many 
  as 
  eight 
  or 
  twelve 
  in 
  a 
  single 
  beau. 
  (Fig. 
  — 
  .) 
  

   This 
  cavity 
  is 
  indicated 
  by 
  a 
  round, 
  sometimes 
  oval; 
  semi-transparent 
  

   spot 
  0.08 
  of 
  an 
  inch 
  in 
  diameter, 
  the 
  insect 
  escaping 
  through 
  a 
  thin 
  orbic- 
  j 
  

   ular, 
  almost 
  transparent, 
  lid, 
  previously 
  gnawn 
  by 
  the 
  larva, 
  which 
  falls 
  fj 
  

   off 
  when 
  the 
  beetle 
  emerges. 
  The 
  chrysalis 
  is 
  surrounded 
  by 
  a 
  thin 
  " 
  

   cocoon-like 
  case, 
  consisting 
  of 
  the 
  castings 
  of 
  the 
  larva 
  (which 
  are 
  long, 
  

   cylindrical, 
  when 
  highly 
  magnified), 
  closely 
  packed 
  together. 
  

   ' 
  Though 
  most 
  of 
  the 
  pupse 
  had, 
  November 
  25, 
  changed 
  to 
  beetles, 
  ; 
  

   which 
  had 
  deserted 
  the 
  beans, 
  many 
  had 
  not 
  changed, 
  and 
  two 
  or 
  three 
  

   out 
  of 
  the 
  whole 
  lot 
  were 
  in 
  the 
  semi-pupa 
  state, 
  the 
  head 
  and 
  posterior 
  , 
  

   part 
  of 
  the 
  body 
  being 
  unchanged. 
  By 
  this 
  we 
  could 
  determine 
  that 
  ; 
  

   the 
  larva 
  closely 
  resembled 
  the 
  larva 
  of 
  the 
  true 
  weevils 
  in 
  form. 
  It 
  is 
  

   a 
  short, 
  thick, 
  fleshy, 
  cylindrical, 
  footless 
  white 
  grub. 
  The 
  tip 
  of 
  its 
  

   abdomen 
  is 
  rather 
  blunt 
  ; 
  its 
  head 
  is 
  rather 
  small, 
  white, 
  with 
  a 
  pale 
  

   yellowish 
  clypeus, 
  while 
  the 
  mandibles 
  are 
  flat, 
  short, 
  and 
  broad 
  and 
  red 
  ( 
  

   in 
  color. 
  The 
  rudimentary 
  antennae 
  form 
  a 
  flattened 
  round 
  area 
  on 
  , 
  

   each 
  side 
  of 
  the 
  clypeus. 
  The 
  segments 
  of 
  the 
  body 
  are 
  not 
  convex, 
  

   being 
  rather 
  flattened, 
  but 
  the 
  sutures 
  are 
  slightly 
  impressed. 
  The 
  body 
  

   is 
  a 
  little 
  flattened 
  beneath 
  and 
  very 
  convex 
  above, 
  while 
  the 
  lateral 
  or 
  

   pleural 
  region 
  of 
  the 
  body 
  is 
  well 
  marked. 
  Length, 
  0.16 
  ; 
  thickness, 
  0.07 
  

   of 
  an 
  inch. 
  

  

  Remedies. 
  — 
  The 
  best 
  remedy 
  against 
  its 
  attacks 
  is 
  to 
  carefully 
  exam- 
  

   ine 
  the 
  beans 
  in 
  the 
  autumn 
  and 
  before 
  sowing 
  time, 
  when 
  their 
  pres- 
  

   ence 
  can 
  be 
  easily 
  detected 
  by 
  the 
  transparent 
  spots 
  made 
  by 
  the 
  larva. 
  

   These 
  should 
  be 
  burned, 
  and 
  such 
  beans 
  as 
  are 
  apparently 
  uuiDJured 
  

   should 
  be 
  soaked 
  for 
  a 
  minute 
  in 
  boiling-hot 
  water, 
  so 
  that 
  no 
  beetles 
  

   be 
  overlooked. 
  

  

  Another 
  Bruclms 
  which 
  is 
  not 
  uncommon 
  in 
  Colorado 
  has 
  been 
  sent 
  

   me 
  by 
  Mr, 
  F. 
  G, 
  Sanborn, 
  and 
  is 
  Bruchus 
  prosopis 
  Le 
  Oonte 
  (Fig. 
  35). 
  

   As 
  it 
  is 
  liable 
  to 
  attack 
  the 
  pea 
  or 
  bean 
  in 
  Colorado 
  and 
  the 
  

   Western 
  Territories, 
  I 
  add 
  a 
  description 
  and 
  figure 
  of 
  it. 
  It 
  

   resembles 
  Bruclms 
  fahce^ 
  the 
  body 
  l3eing 
  of 
  nearly 
  the 
  same 
  

   proportions. 
  It 
  is 
  larger 
  than 
  that 
  species, 
  but 
  the 
  mark- 
  

   ings 
  are 
  very 
  similar. 
  Itmay 
  be 
  distinguished, 
  however, 
  by 
  

   the 
  entire 
  under 
  side 
  of 
  the 
  body 
  being 
  uniformly 
  whitish. 
  

   Length, 
  0.20 
  inch. 
  Another 
  species, 
  like 
  the 
  other 
  kindly 
  

   identified 
  for 
  me 
  by 
  Dr. 
  E. 
  H. 
  Horn, 
  is 
  Bruchus 
  amicus 
  

   Horn. 
  It 
  was 
  inclosed 
  in 
  the 
  same 
  bottle 
  with 
  B. 
  prosopis. 
  

   Fig 
  35—Brn- 
  ^^ 
  ^^^ 
  ^^ 
  ^^^^® 
  ^^ 
  distinguished 
  by 
  its 
  uniformly 
  slate- 
  

   ciius 
  prosopis 
  gray 
  color 
  above 
  and 
  beneath, 
  not 
  being 
  spotted 
  as 
  usual 
  

   Le 
  c. 
  in 
  the 
  genus. 
  It 
  is 
  slightly 
  smaller 
  than 
  prosopis. 
  

  

  The 
  Bean 
  Leaf-Hopper, 
  Empoafabce 
  (Harris). 
  — 
  Pnncturingthe 
  leaves, 
  causing 
  them 
  

   to 
  wither 
  and 
  die, 
  and 
  the 
  pods 
  to 
  become 
  rough 
  and 
  scarred 
  ; 
  a 
  small 
  pale-green 
  leaf- 
  

   hopper. 
  

  

  As 
  I 
  have 
  had 
  no 
  personal 
  experience 
  with 
  this 
  insect, 
  I 
  copy 
  Harris's 
  

   account 
  and 
  description 
  of 
  it: 
  "I 
  have 
  found 
  that 
  the 
  Windsor 
  bean, 
  a 
  

   variety 
  of 
  the 
  Vicia 
  faba 
  of 
  Linnaeus, 
  is 
  subject 
  to 
  the 
  attacks 
  of 
  a 
  

   species 
  of 
  leaf-hopper, 
  particularly 
  during 
  dry 
  seasons, 
  and 
  when 
  culti- 
  

   vated 
  in 
  light 
  soils. 
  In 
  the 
  early 
  part 
  of 
  summer 
  the 
  insects 
  are 
  so 
  

   small 
  and 
  so 
  light-colored 
  that 
  they 
  easily 
  escape 
  observation, 
  and 
  it 
  is 
  

   not 
  till 
  the 
  beginning 
  of 
  July, 
  when 
  the 
  beans 
  are 
  usually 
  large 
  enough 
  

  

  