﻿DESCRIPTIONS 
  OF 
  WOOD-BORING 
  LARV^. 
  261 
  

  

  Eium 
  rough, 
  black, 
  and 
  with 
  a 
  spine 
  on 
  each 
  side 
  below, 
  projecting 
  

   over 
  the 
  clypeus 
  ('^epistoma" 
  of 
  Perris); 
  upper 
  edge 
  overhanging 
  and 
  

   irregularly 
  denticulated. 
  Clypeus 
  subchitinous. 
  Labrum 
  much 
  broader 
  

   than 
  long, 
  well 
  rounded 
  in 
  front, 
  with 
  numerous 
  stiff 
  bristles. 
  Autennse 
  

   3jointed; 
  basal 
  joint 
  partly 
  covered 
  by 
  a 
  projection 
  from 
  the 
  epicra- 
  

   nium; 
  2d 
  joint 
  one-half 
  as 
  long 
  and 
  about 
  three-fourths 
  as 
  thick 
  as 
  the 
  

   1st 
  5 
  3d 
  joint 
  nearly 
  three 
  times 
  as 
  long 
  as 
  the 
  2d, 
  somewhat 
  barrel- 
  

   shaped, 
  being 
  contracted 
  at 
  base 
  and 
  obtusely 
  conical 
  at 
  the 
  distal 
  end. 
  

   Maxillae 
  with 
  the 
  lobe 
  well 
  developed, 
  the 
  lobe 
  not 
  being 
  very 
  broad, 
  

   abundantly 
  bristled, 
  and 
  extending 
  as 
  far 
  as 
  the 
  end 
  of 
  the 
  3d 
  palpal 
  

   joint. 
  Maxillary 
  palpus 
  4-jointed; 
  3d 
  joint 
  but 
  slightly 
  longer 
  than 
  the 
  

   2d, 
  the 
  4th 
  as 
  long 
  as 
  the 
  3d, 
  but 
  one-half 
  as 
  thick, 
  conical, 
  pointed 
  at 
  

   the 
  end, 
  and 
  extending 
  well 
  beyond 
  the 
  closed 
  mandibles. 
  

  

  Labium: 
  mentum 
  short 
  and 
  very 
  broad 
  j 
  ligula 
  nearly 
  as 
  long 
  as 
  

   broad, 
  front 
  edge 
  well 
  rounded. 
  Palpi 
  2-jointed5 
  basal 
  joint 
  thick 
  and 
  

   short, 
  globose, 
  2d 
  joint 
  conical, 
  contracted 
  in 
  the 
  middle 
  as 
  if 
  sub- 
  

   segmented. 
  Mandibles 
  acute, 
  slightly 
  bidentate. 
  

  

  Feet 
  moderately 
  stout, 
  3-jointed, 
  the 
  two 
  basal 
  joints 
  nearly 
  alike^ 
  

   the 
  3d 
  conical, 
  and 
  bearing 
  a 
  single 
  claw. 
  

  

  Length 
  of 
  the 
  specimen, 
  TS'^"""; 
  width 
  of 
  prothorax, 
  11.5™™; 
  of 
  protho- 
  

   racic 
  disc, 
  10™™; 
  length 
  of 
  prothorax, 
  8™™; 
  length 
  from 
  base 
  of 
  head 
  

   to 
  tip 
  of 
  labrum, 
  4™™; 
  width 
  of 
  head, 
  6™™; 
  length 
  of 
  antenna, 
  0.8™™; 
  of 
  

   leg, 
  O.G™™ 
  ; 
  width 
  of 
  mesothoracic 
  segment, 
  12.5™™ 
  ; 
  of 
  1st 
  abdominal 
  

   segment, 
  11.5™°^; 
  of 
  4th 
  abdominal 
  segment, 
  10™™; 
  length 
  of 
  8th 
  ab- 
  

   dominal 
  segment, 
  4™™; 
  of 
  9th, 
  8™™. 
  

  

  Unknown 
  LoNaiconN 
  borer 
  from 
  an 
  oak 
  log. 
  PI. 
  XI, 
  Fig. 
  3. 
  

  

  Body 
  of 
  large 
  size, 
  gradually 
  tapering 
  to 
  the 
  penultimate 
  segment, 
  

   with 
  three 
  pairs 
  of 
  thoracic 
  legs 
  of 
  moderate 
  size. 
  

  

  Head 
  small 
  and 
  much 
  rounded. 
  Labrum 
  small 
  andunusually 
  narrow, 
  

   well 
  rounded 
  on 
  the 
  front 
  edge. 
  Antennae 
  conspicuous, 
  unusually 
  long 
  ; 
  

   2d 
  joint 
  very 
  long 
  and 
  slender, 
  longer 
  than 
  the 
  basal 
  one 
  is 
  thick; 
  3d 
  

   joint 
  minute 
  and 
  acute 
  at 
  tip. 
  Labium 
  very 
  small, 
  squarish; 
  submen- 
  

   tum 
  and 
  mentum 
  both 
  rectangular, 
  broader 
  than 
  long 
  ; 
  the 
  ligula 
  nar- 
  

   row, 
  much 
  rounded 
  in 
  front; 
  labial 
  palpi 
  3-jointed; 
  3d 
  joint 
  obtuse, 
  as 
  

   long 
  as 
  the 
  2d. 
  Maxillary 
  lobe 
  very 
  broad 
  and 
  rather 
  short, 
  not 
  

   reaching 
  beyond 
  the 
  end 
  of 
  the 
  2d 
  palpal 
  joint. 
  Maxillary 
  palpi 
  3- 
  

   jointed; 
  1st 
  joint 
  very 
  short 
  and 
  broad; 
  2d 
  one-half 
  as 
  thick 
  as 
  the 
  1st, 
  

   the 
  3d 
  slender 
  and 
  a 
  little 
  longer 
  than 
  the 
  2d. 
  Mandibles 
  much 
  rounded 
  

   and 
  entire 
  at 
  tip. 
  

  

  The 
  callosities 
  on 
  the 
  segments, 
  as 
  figured 
  in 
  the 
  cut, 
  are 
  prominent, 
  

   more 
  or 
  less 
  rounded 
  tubercles 
  with 
  the 
  surface 
  divided 
  irregularly 
  by 
  

   impressed 
  lines. 
  

  

  Length, 
  35™™; 
  width 
  of 
  prothoracic 
  segment, 
  8™™; 
  length, 
  3™™ 
  ; 
  length 
  

   of 
  a 
  leg 
  Avith 
  terminal 
  claw, 
  0.4™™; 
  length 
  from 
  base 
  of 
  labrum 
  to 
  pos- 
  

   terior 
  edge 
  of 
  metathoracic 
  segment, 
  5™™; 
  length 
  of 
  1st 
  and 
  2d 
  abdomi- 
  

  

  