﻿662 
  EEPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  The 
  larva3, 
  however, 
  devour 
  snails 
  and 
  insects, 
  and 
  do 
  no 
  injury 
  to 
  

   vegetation. 
  The 
  larva 
  of 
  this 
  species 
  was 
  identified 
  by 
  Mr. 
  P. 
  S. 
  Sprague^ 
  

   who 
  found 
  it 
  near 
  Boston, 
  under 
  stones 
  in 
  spring, 
  where 
  it 
  changes 
  to 
  

   a 
  pupa, 
  and 
  early 
  in 
  May 
  becomes 
  a 
  beetle, 
  when 
  it 
  eats 
  the 
  newly- 
  

   expanded 
  leaves 
  of 
  the 
  birch. 
  

  

  DescriiMon. 
  — 
  The 
  body 
  of 
  the 
  larva 
  is 
  rather 
  long 
  and 
  slender, 
  thickest 
  in 
  the 
  mid- 
  

   dle, 
  where 
  it 
  is 
  about 
  twice 
  as 
  wide 
  as 
  the 
  head, 
  and 
  tapers 
  slightly 
  toward 
  each 
  end 
  

   of 
  the 
  body, 
  the 
  terminal 
  segment 
  being 
  a 
  little 
  less 
  than 
  half 
  as 
  thick 
  as 
  the 
  middle 
  

   segment. 
  The 
  segments 
  of 
  the 
  body 
  behind 
  the 
  head 
  are 
  unusually 
  convex, 
  the 
  sutures 
  

   between 
  them 
  being 
  very 
  deep. 
  The 
  body 
  is 
  covered 
  with 
  fine, 
  dense 
  hairs, 
  giving 
  

   it 
  a 
  peculiar 
  velvety 
  appearance. 
  Its 
  general 
  color 
  is 
  horn-brown, 
  the 
  head 
  being 
  

   darker. 
  The 
  head 
  is 
  remarkably 
  flattened 
  and 
  square, 
  being 
  scarcely 
  longer 
  than 
  

   broad, 
  and 
  densely 
  covered 
  with 
  short 
  hairs 
  above 
  and 
  beneath. 
  The 
  antennoe 
  are 
  in- 
  

   serted 
  on 
  the 
  side 
  of 
  the 
  head, 
  and 
  immediately 
  behind 
  them 
  on 
  the 
  side 
  are 
  the 
  eyes 
  ; 
  

   the 
  occipital 
  suture 
  is 
  situated 
  midway 
  between 
  the 
  base 
  and 
  the 
  front 
  edge 
  of 
  the 
  

   head, 
  forming 
  a 
  straight 
  line 
  just 
  behind 
  the 
  eyes. 
  The 
  antennaj 
  are 
  two-jointed, 
  and 
  

   received 
  into 
  a 
  large 
  socket 
  ; 
  the 
  first 
  joint 
  is 
  very 
  short; 
  the 
  second 
  joint 
  four 
  times 
  

   as 
  long 
  as 
  the 
  first, 
  a 
  little 
  slenderer, 
  and 
  increasing 
  slightly 
  in 
  width 
  toward 
  the 
  end, 
  

   which 
  is 
  abrupt, 
  and 
  contains 
  a 
  minute, 
  rudimentary 
  third 
  joint. 
  The 
  maxillae 
  are 
  

   broad, 
  subtriangular, 
  projecting 
  a 
  third 
  of 
  their 
  length 
  beyond 
  the 
  labium, 
  with 
  the 
  

   ends 
  broad 
  and 
  square. 
  The 
  palpi 
  extend 
  out 
  from 
  the 
  head 
  as 
  far 
  as 
  the 
  antennas, 
  and 
  

   are 
  three-jointed, 
  with 
  the 
  basal 
  joint 
  quite 
  thijsk, 
  rather 
  longer 
  than 
  thick, 
  while 
  the 
  

   second 
  joint 
  is 
  very 
  short, 
  and 
  one-half 
  as 
  long 
  as 
  thick 
  ; 
  the 
  third 
  minute, 
  rudimentary. 
  

   The 
  anterior 
  edge 
  of 
  the 
  occiput 
  beneath 
  is 
  deeply 
  hollowed 
  out 
  ; 
  the 
  chin 
  (mentum)is 
  

   oblong, 
  with 
  very 
  square 
  edges, 
  and 
  is 
  one-fourth 
  longer 
  than 
  broad. 
  The 
  labial 
  palpi 
  

   are 
  two-jointed, 
  the 
  basal 
  joint 
  very 
  short, 
  one-half 
  as 
  long 
  as 
  broad 
  ; 
  second 
  nearly 
  twice 
  

   .IS 
  long 
  as 
  thick, 
  and 
  ending 
  in 
  a 
  stiff 
  hair. 
  The 
  mandibles 
  are 
  large, 
  stout, 
  two- 
  

   toothed, 
  the 
  inner 
  tooth 
  situated 
  a 
  considerable 
  dista.nce 
  from 
  the 
  tip. 
  The 
  labrum 
  is 
  

   broad 
  and 
  perfectly 
  square 
  in 
  front, 
  with 
  a 
  median 
  notch 
  dividing 
  the 
  edge 
  into 
  two 
  

   slight 
  lobes. 
  The 
  clypeus 
  is 
  an 
  ill-defined 
  oval, 
  convex 
  area. 
  

  

  Along 
  the 
  median 
  line 
  of 
  the 
  body 
  is 
  a 
  slightly-marked 
  row 
  of 
  short, 
  paler 
  streaks, 
  

   more 
  continuous 
  on 
  the 
  thoracic 
  than 
  the 
  abdominal 
  segments, 
  forming 
  on 
  each 
  of 
  the 
  

   latter 
  segments 
  an 
  elongated 
  spot 
  situated 
  on 
  the 
  anterior 
  edge 
  of 
  each 
  segment 
  except 
  

   the 
  last. 
  On 
  each 
  thoracic 
  and 
  the 
  last 
  abdominal 
  segment 
  is 
  a 
  pair 
  of 
  lateral 
  oval 
  

   brown 
  spots, 
  paler 
  in 
  the 
  center. 
  Behind 
  these 
  on 
  each 
  abdominal 
  segment 
  (except 
  the 
  

   last) 
  is 
  a 
  row 
  of 
  pale 
  short 
  lines, 
  placed 
  in 
  the 
  middle 
  of 
  the 
  segment. 
  Farther 
  down 
  

   on 
  each 
  side 
  is 
  a 
  similar 
  row 
  of 
  short 
  lines, 
  which 
  are, 
  however, 
  subdivided 
  into 
  two 
  

   spots, 
  which 
  on 
  the 
  thoracic 
  segments 
  form 
  a 
  row 
  of 
  four 
  or 
  five 
  pale 
  dots. 
  Between 
  

   these 
  two 
  lines 
  is 
  a 
  row 
  of 
  black 
  dots, 
  one 
  on 
  each 
  segment. 
  The 
  legs 
  are 
  rather 
  short, 
  

   and 
  quite 
  hairy. 
  The 
  terminal 
  segment 
  of 
  the 
  abdomen 
  is 
  about 
  as 
  long 
  as 
  broad, 
  and 
  

   well 
  rounded 
  l^ehind. 
  It 
  is 
  three-quarters 
  (.75) 
  of 
  an 
  inch 
  in 
  length. 
  The 
  pupa 
  was 
  

   not 
  preserved. 
  The 
  beetle 
  itself 
  is 
  soft-bodied, 
  brownish-black 
  and 
  reddish-yellow. 
  

   Its 
  specific 
  name 
  (biUneatus) 
  was 
  given 
  to 
  it 
  from 
  the 
  two 
  short, 
  broad, 
  blackish 
  bands 
  

   on 
  the 
  prothorax, 
  which 
  is 
  reddish-yellow. 
  The 
  head 
  is 
  reddish 
  -yellow, 
  with 
  a 
  broad 
  

   black 
  band 
  between 
  the 
  eyes, 
  and 
  the 
  antennae 
  are 
  black. 
  The 
  body 
  beneath 
  is 
  pale 
  

   reddish, 
  except 
  the 
  under 
  side 
  of 
  the 
  middle 
  of 
  the 
  thorax 
  (meso 
  and 
  meta 
  thorax). 
  

   The 
  legs 
  are 
  pale 
  reddish 
  at 
  base, 
  while 
  the 
  end 
  of 
  the 
  femora 
  and 
  the 
  tibiae 
  and 
  tarsi 
  

   are 
  entirely 
  black-brown. 
  It 
  is 
  about 
  a 
  third 
  (.30) 
  of 
  an 
  inch 
  long. 
  

  

  Whether 
  this 
  Telepliorus 
  larva 
  devours 
  the 
  eggs, 
  or 
  young 
  larv?e, 
  or 
  

   only 
  the 
  sickly 
  and 
  dying 
  locust, 
  is 
  not 
  known. 
  

  

  The 
  ground-beetle 
  grub 
  (Plate 
  LXIII, 
  Fig. 
  1, 
  enlarged). 
  — 
  Another 
  beetle- 
  

   grub, 
  which 
  is 
  supposed 
  to 
  devour 
  the 
  eggs, 
  has 
  been 
  received 
  from 
  Mr. 
  

   Whitman. 
  It 
  is 
  the 
  young 
  of 
  a 
  species 
  of 
  Rarpalus, 
  and 
  is 
  allied 
  to 
  the 
  

   larva 
  of 
  the 
  European 
  H. 
  cerieus, 
  as 
  figured 
  by 
  Schiodte, 
  and 
  may 
  pos- 
  

   sibly 
  be 
  the 
  young 
  of 
  iT. 
  herbivagus 
  of 
  Say, 
  a 
  very 
  common 
  beetle 
  found 
  

   all 
  over 
  the 
  country, 
  having 
  been 
  collected 
  by 
  Lieutenant 
  Carpenter 
  in 
  

   Southern 
  Colorado 
  and 
  ISTorthern 
  Mexico, 
  according 
  to 
  Le 
  Conte, 
  so 
  that 
  

   it 
  probably 
  destroys 
  the 
  locust 
  wherever 
  the 
  latter 
  occurs. 
  

  

  The 
  hair-tcorm 
  parasite 
  {Gordius 
  aqiiaticus 
  Linn, 
  and 
  G. 
  varius 
  Leidy, 
  

   Plate 
  LXIII, 
  Fig. 
  6, 
  see 
  explanation 
  of 
  the 
  plate). 
  — 
  I 
  have 
  received 
  from 
  

   Mr. 
  Whitman 
  fragments 
  of 
  a 
  hair-worm 
  found 
  by 
  him 
  in 
  the 
  Eocky 
  Moun- 
  

   tain 
  locust, 
  but, 
  unfortunately, 
  comprising 
  neither 
  end 
  of 
  the 
  animal, 
  so 
  

   that 
  it 
  is 
  impossible 
  to 
  tell 
  which 
  species 
  it 
  is. 
  It 
  is 
  probable 
  that 
  it 
  

   belongs 
  to 
  Gordius 
  aquatieus, 
  as 
  I 
  have 
  received 
  one 
  of 
  that 
  species 
  from 
  

  

  