﻿LAEV^ 
  OF 
  INJURIOUS 
  FOREST 
  INSECTS. 
  ' 
  253 
  

  

  lary 
  lobe 
  smaller 
  in 
  proportion 
  to 
  the 
  base 
  of 
  the 
  maxilla 
  than 
  in 
  Dicerca 
  

   or 
  Ohrysobothris. 
  Palpus 
  2-jointed; 
  basal 
  joint 
  much 
  larger 
  than 
  the 
  

   maxillary 
  lobe 
  (in 
  Dicerca 
  and 
  Ohrysobothris 
  it 
  is 
  much 
  smaller); 
  2d 
  

   joint 
  one-fourth 
  as 
  large 
  as 
  1st, 
  being 
  proportionally 
  much 
  smaller 
  than 
  

   in 
  the 
  above-mentioned 
  genera. 
  Labium 
  much 
  as 
  in 
  the 
  said 
  genera, 
  

   being 
  rounded 
  in 
  front. 
  

  

  Total 
  length 
  of 
  body, 
  41"^"^; 
  length 
  of 
  prothorax, 
  5™°^; 
  breadth, 
  8"""; 
  

   length 
  of 
  the 
  three 
  thoracic 
  segments 
  together, 
  8"^"^j 
  breadth 
  of 
  4th 
  

   abdominal 
  segment, 
  4"^'". 
  

  

  The 
  hairs 
  on 
  the 
  body 
  are 
  much 
  coarser 
  than 
  in 
  the 
  other 
  genera 
  

   mentioned. 
  

  

  This 
  larva 
  may 
  be 
  distinguished 
  by 
  the 
  large 
  head, 
  the 
  well-devel- 
  

   oped 
  antennse, 
  the 
  large 
  maxillae, 
  with 
  the 
  lower 
  joint 
  of 
  maxillary 
  

   palpus 
  small; 
  by 
  the 
  very 
  coarse 
  and 
  linear 
  markings 
  on 
  the 
  prothoracic 
  

   disk 
  above 
  and 
  beneath 
  ; 
  by 
  the 
  absence 
  of 
  roughened 
  areas 
  or 
  callosi- 
  

   ties 
  on 
  the 
  meso 
  and 
  metathoracic 
  segments, 
  and 
  by 
  the 
  long, 
  thick 
  

   abdomen. 
  

  

  The 
  mesothoracic 
  segment 
  is 
  shorter 
  and 
  the 
  metathoracic 
  is 
  as 
  long 
  

   as 
  in 
  Dicerca. 
  

  

  Compared 
  with 
  Loew's 
  figure 
  of 
  the 
  larva 
  of 
  Ohalcophora 
  (Ent. 
  Zei- 
  

   tung, 
  Stettin, 
  2ter 
  Jahrgang, 
  1841, 
  Tab. 
  I, 
  figs. 
  1-8) 
  our 
  species 
  differs 
  

   mainly 
  in 
  the 
  larger 
  chitinous 
  prothoracic 
  disk, 
  though 
  the 
  V-shaped 
  

   mark 
  is 
  the 
  same. 
  In 
  the 
  shape 
  of 
  the 
  body, 
  in 
  the 
  form 
  of 
  the 
  meso- 
  

   thoracic 
  and 
  metathoracic 
  segments, 
  and 
  the 
  end 
  of 
  the 
  abdomen, 
  our 
  

   larva 
  appears 
  to 
  be 
  a 
  Ohalcophora. 
  The 
  1st 
  abdominal 
  ring 
  is 
  longer 
  

   and 
  narrower 
  than 
  in 
  Loew's 
  figure. 
  The 
  labrum 
  is 
  peculiar 
  in 
  this 
  

   genus, 
  on 
  account 
  of 
  the 
  lateral 
  lobes 
  ; 
  in 
  this 
  respect 
  it 
  resembles 
  the 
  

   figure 
  of 
  LoeWj- 
  while 
  the 
  aiiteunie, 
  maxillae, 
  and 
  labium 
  are 
  nearly 
  as 
  

   he 
  figures 
  them. 
  Under 
  these 
  circumstances 
  we 
  think 
  there 
  is 
  no 
  reason- 
  

   able 
  doubt 
  but 
  that 
  this 
  larva 
  is 
  a 
  Ohalcophora, 
  and 
  probably, 
  from 
  its 
  

   large 
  size, 
  G. 
  virginica^ 
  which, 
  according 
  to 
  Harris, 
  bores 
  in 
  the 
  pine. 
  

  

  The 
  two 
  specimens 
  described 
  were 
  taken 
  from 
  under 
  the 
  bark 
  of 
  the 
  

   pitch 
  pine, 
  May 
  26, 
  Providence, 
  E. 
  I. 
  

  

  Melanophila. 
  sp. 
  PI. 
  yi, 
  fig. 
  4; 
  XII, 
  fig. 
  1. 
  

  

  Head 
  of 
  moderate 
  size. 
  Antennae 
  very 
  short, 
  3-jointed; 
  2d 
  joint 
  

   much 
  shorter 
  than 
  long, 
  3d 
  very 
  short 
  and 
  blunt, 
  much 
  more 
  so 
  than 
  the 
  

   unknown 
  (spruce) 
  genus, 
  or 
  in 
  Ohrysobothris 
  or 
  Dicerca. 
  Labrum 
  much 
  

   as 
  in 
  the 
  other 
  genera 
  mentioned, 
  rather 
  narrow, 
  and 
  moderately 
  full 
  on 
  

   the 
  front 
  edge. 
  Maxillary 
  lobe 
  well 
  developed, 
  with 
  a 
  spine 
  pointing 
  

   inwards; 
  maxillary 
  palpi 
  with 
  the 
  2d 
  joint 
  as 
  long 
  as 
  the 
  1st. 
  Labium 
  

   slightly 
  indented 
  in 
  the 
  middle, 
  but 
  so 
  slightly 
  so 
  that 
  it 
  cannot 
  be 
  repre- 
  

   sented 
  in 
  a 
  figure. 
  Mandibles 
  tridentate. 
  

  

  Prothorax 
  unusually 
  short, 
  about 
  half 
  as 
  long 
  as 
  broad, 
  the 
  sides 
  

   well 
  rounded; 
  the 
  roughened 
  chitinous 
  disk 
  is 
  very 
  small, 
  not 
  much 
  

   over 
  one-third 
  as 
  wide 
  as 
  the 
  entire 
  segment; 
  it 
  is 
  round, 
  slightly 
  longer 
  

   than 
  broad, 
  inclosing 
  a 
  narrow 
  inverted 
  V, 
  which 
  extends 
  the 
  whole 
  

  

  