﻿262 
  EEPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  nal 
  segment, 
  each, 
  2™™^ 
  length 
  from 
  base 
  of 
  3d 
  abdominal 
  segment 
  

   to 
  end 
  of 
  body, 
  28°^™ 
  j 
  width 
  of 
  each 
  of 
  segments 
  2-6, 
  6"^°^ 
  ; 
  the 
  7th 
  and 
  

   8th 
  segments 
  are 
  slightly 
  wider. 
  

   Found 
  in 
  an 
  oak 
  log 
  at 
  Providence, 
  E. 
  I., 
  May 
  20, 
  1881. 
  

  

  Unknown 
  Lonoicorn 
  larva 
  in 
  the 
  Sycamore. 
  PI. 
  X, 
  Fig. 
  2. 
  

  

  Body 
  rather 
  flattened, 
  broader 
  behind 
  than 
  usual, 
  the 
  penultimate 
  

   segment 
  being 
  much 
  wider 
  than 
  usual. 
  Head 
  large 
  and 
  prominent, 
  

   square 
  and 
  flat, 
  somewhat 
  as 
  in 
  Monohammus, 
  being 
  one-half 
  as 
  wide 
  as 
  

   the 
  prothoracic 
  segment. 
  Mandibles 
  acute, 
  unequally 
  2-toothed, 
  tbe 
  ter- 
  

   minal 
  tooth 
  much 
  the 
  larger. 
  Antennae 
  very 
  short 
  and 
  thick, 
  2-joiuted: 
  

   2nd 
  joint 
  extremely 
  *small, 
  with 
  two 
  outer 
  spines 
  on 
  the 
  1st 
  joint. 
  I^ear 
  

   the 
  antennae 
  on 
  the 
  head 
  are 
  five 
  long 
  bristles. 
  Labrum 
  much 
  rounded 
  

   in 
  front, 
  as 
  long 
  as 
  broad. 
  Labium 
  broad, 
  with 
  2-jointed 
  palpi; 
  2d 
  

   joint 
  £tcute, 
  as 
  long 
  as 
  the 
  1st 
  is 
  thic]?. 
  Maxillary 
  lobe 
  narrow, 
  reaching 
  

   to 
  the 
  end 
  of 
  2d 
  joint; 
  3d 
  joint 
  about 
  as 
  long 
  as 
  2d, 
  rather 
  blunt. 
  No 
  

   thoracic 
  feet. 
  Prothoracic 
  segment 
  about 
  one-third 
  as 
  long 
  as 
  broad, 
  

   with 
  a 
  roughened 
  spur 
  on 
  the 
  posterior 
  half; 
  the 
  front 
  edge 
  quite 
  hirsute. 
  

   The 
  markings 
  or 
  callosities 
  on 
  the 
  back 
  ar^ 
  difficult 
  to 
  describe, 
  but 
  are 
  

   as 
  figured 
  by 
  Dr. 
  Gissler. 
  

  

  Length, 
  IS'""^ 
  ; 
  width 
  of 
  prothoracic 
  segment, 
  4°^"^; 
  length, 
  1.6°^"^; 
  aver- 
  

   age 
  width 
  of 
  the 
  body, 
  3.8°^°^; 
  length 
  from 
  tips 
  of 
  mandibles 
  to 
  base 
  of 
  

   head, 
  1.6°^°^. 
  

  

  Larva 
  found 
  under 
  bark 
  of 
  sycamore 
  tree 
  in 
  Brooklyn, 
  N. 
  Y. 
  Eeceived 
  

   from 
  Dr. 
  0. 
  F. 
  Gissler. 
  

  

  Fupa.—Flate 
  XIY, 
  Fig. 
  8, 
  represents 
  a 
  Longicorn 
  chrysalis, 
  taken 
  

   from 
  under 
  the 
  bark 
  of 
  the 
  same 
  sycamore 
  tree 
  as 
  the 
  larva 
  above 
  de- 
  

   scribed, 
  and 
  which 
  may 
  possibly 
  belong 
  to 
  the 
  same 
  species. 
  

  

  Note. 
  — 
  A 
  number 
  of 
  other 
  larva3, 
  including 
  those 
  of 
  certain 
  Scolytidse, 
  are 
  figured 
  

   on 
  Plates 
  XII-XV. 
  See 
  explanations 
  of 
  those 
  plates. 
  

  

  