﻿EXPLANATION 
  OF 
  PLATES. 
  

  

  PLATE 
  Xiy. 
  

  

  Fig. 
  

  

  1. 
  

  

  Pig. 
  

  

  1». 
  

  

  Fig. 
  

  

  2. 
  

  

  Fig. 
  

  

  2b 
  

  

  Fig. 
  

  

  3. 
  

  

  Fig. 
  

  

  3». 
  

  

  Fig. 
  

  

  4. 
  

  

  Fig. 
  

  

  5. 
  

  

  Fig. 
  

  

  5». 
  

  

  Fig. 
  

  

  5*. 
  

  

  Xyloteres 
  hivittatus, 
  larva. 
  Fig, 
  

  

  Xyloteres 
  hivittatus, 
  pupa. 
  Fig. 
  

  

  Xyleborus 
  ccelatus, 
  larva. 
  

   Xyleborus 
  ccelatus, 
  mandible. 
  

   Xyleborus 
  ccelatus, 
  pupa, 
  dorsal 
  view. 
  

   Xyleborus 
  ccelatus, 
  pupa, 
  end 
  of 
  abdomen, 
  

  

  mucli 
  enlarged. 
  

   Crypturgus 
  atomus, 
  larva. 
  

   Orypturgus 
  atomus, 
  larva 
  : 
  md, 
  mandible 
  ; 
  

  

  mx', 
  labium. 
  

   Crypturgus 
  atomus, 
  larva 
  : 
  md, 
  mandible. 
  

   Orypturgus 
  atomus, 
  maxilla. 
  

  

  All 
  the 
  figures 
  enlarged, 
  

  

  Fig 
  

   Fig, 
  

  

  Fig. 
  

  

  Fig. 
  

  

  5". 
  Crypturgus 
  atomus, 
  pupa, 
  end 
  of 
  body. 
  

  

  6. 
  Chalcid 
  parasite 
  of 
  X. 
  ccelatus 
  or 
  Crypt- 
  

  

  urgus 
  atomus 
  : 
  w, 
  wing 
  ; 
  ant, 
  antenna. 
  

   6^. 
  Chalcid 
  parasite, 
  larva, 
  2™" 
  in 
  length. 
  

  

  7. 
  Unknown 
  larva, 
  4"™ 
  in 
  length, 
  under 
  

  

  bark 
  of 
  pine, 
  probably 
  preying 
  on 
  

   lignivorous 
  scolytid 
  larvae. 
  Maine. 
  

  

  8. 
  Pupa 
  of 
  longicorn 
  larva, 
  under 
  bark 
  of 
  

  

  sycamore 
  tree, 
  Brooklyn, 
  N. 
  Y. 
  : 
  p., 
  

   end 
  of 
  abdomen 
  seen 
  from 
  above. 
  

  

  9. 
  Hylurgops 
  pinifex, 
  pupa. 
  

  

  G-issler 
  del. 
  

  

  PLATE 
  XV. 
  

  

  Fig. 
  1. 
  Selandrialax-va,, 
  common 
  on 
  Carya 
  porcina, 
  

   with 
  details 
  of 
  mouth 
  parts 
  : 
  leg, 
  leg 
  ; 
  

   mx, 
  maxilla; 
  gal, 
  galea 
  {=mala 
  ex- 
  

   terior) 
  ; 
  lac, 
  lacinia 
  (=mala 
  interior). 
  

   Other 
  letters 
  as 
  heretofore. 
  

  

  Fig. 
  2. 
  Deltoid 
  larva 
  (before 
  last 
  molt), 
  on 
  Carya 
  

   porcina 
  and 
  sometimes 
  on 
  oak. 
  May 
  

   25, 
  June 
  20th 
  : 
  n. 
  s., 
  larva 
  of 
  natural 
  

   size, 
  head 
  downward; 
  p^, 
  third 
  leg; 
  

   mx 
  and 
  mx', 
  maxilla 
  and 
  labium 
  (the 
  

  

  dotted 
  line 
  ends 
  on 
  the 
  maxillary 
  lobe 
  

   or 
  mala) 
  ; 
  sp, 
  spinneret 
  at 
  end 
  of 
  \m 
  

   gua; 
  f, 
  maxillary 
  palpus; 
  cly, 
  cly- 
  

   peus 
  ; 
  Ibr, 
  labrum 
  ; 
  I, 
  fleshy 
  lobe. 
  

  

  Fig. 
  3. 
  Unknown 
  larva, 
  common 
  under 
  bark, 
  prey- 
  

   ing 
  on 
  destructive 
  scolytid 
  beetles. 
  

  

  Fig. 
  4, 
  Unknown 
  larva, 
  yellowish, 
  under 
  bark 
  ; 
  

   3mm 
  in 
  length 
  : 
  ab, 
  end 
  of 
  abdomen. 
  

  

  Fig. 
  5. 
  Carabid 
  larva, 
  under 
  bark 
  of 
  pine 
  ; 
  length, 
  

  

  4mra_ 
  

  

  All 
  the 
  figures 
  enlarged. 
  Gissler 
  del. 
  

   PLATE 
  XVI. 
  

  

  EMBRYOLOGY 
  OF 
  CALOPTENUS 
  SPRETU8. 
  

  

  Fig. 
  1. 
  Dorsal 
  view 
  of 
  embryo, 
  showing 
  the 
  sto- 
  

   modaeum 
  («f) 
  and 
  proctodseum 
  (pr), 
  

   with 
  the 
  nervous 
  system: 
  br, 
  brain; 
  

   g. 
  op, 
  optic 
  ganglion 
  ; 
  ng, 
  ganglia 
  ; 
  the 
  

   salivary 
  glands 
  {sal) 
  and 
  the 
  two 
  pairs 
  

   of 
  thoracic 
  spiracles 
  and 
  eight 
  pairs 
  

   of 
  abdominal 
  spiracles 
  1-8, 
  and 
  indica- 
  

   tions 
  of 
  the 
  tracheae 
  {tr' 
  tr"), 
  perhaps 
  

   in 
  part 
  the 
  fat 
  bodies 
  ; 
  am, 
  amnion. 
  

  

  • 
  Author 
  del 
  

  

  Fig. 
  2. 
  Nucleated 
  cells 
  of 
  the 
  skin 
  of 
  the 
  2d 
  seg- 
  

   ment: 
  Xg 
  A. 
  

  

  Fig. 
  3. 
  Nucleated 
  cells 
  of 
  the 
  amnion: 
  X 
  ^ 
  ^• 
  

  

  Fig. 
  4. 
  Portion 
  of 
  the 
  eye: 
  c, 
  cones; 
  rod, 
  rods;^ 
  

   ret, 
  retina. 
  

  

  Fig. 
  5. 
  Yertical 
  view 
  of 
  the 
  head, 
  with 
  the 
  out- 
  

   line 
  of 
  the 
  brain 
  and 
  the 
  rudiments 
  of 
  

   the 
  three 
  ocelli. 
  

  

  PLATE 
  XVII. 
  

  

  EMBRYOLOGY 
  OF 
  CALOPTENUS 
  SPRETUS. 
  

  

  Fig. 
  1. 
  Embryo 
  when 
  first 
  observed 
  in 
  the 
  egg. 
  

  

  I 
  — 
  IV, 
  antennae 
  and 
  mouth-parts. 
  

  

  V 
  — 
  VII, 
  three 
  pairs 
  of 
  legs. 
  

   Fig. 
  1^. 
  The 
  same, 
  enlarged. 
  Amnion 
  not 
  drawn: 
  

  

  occ, 
  occiput. 
  

   Fig. 
  2. 
  More 
  advanced 
  embryo. 
  

   Fig. 
  2». 
  Four 
  abdominal 
  ganglia. 
  

  

  Fig. 
  3. 
  Embryo, 
  showing 
  the 
  three 
  lobes 
  of 
  the 
  

   maxillae, 
  and 
  the 
  two 
  lobes 
  of 
  the 
  labi- 
  

   um. 
  

  

  Fig. 
  4. 
  More 
  advanced 
  embryo, 
  showing 
  the 
  

   stigmata, 
  the 
  fat 
  body, 
  and 
  the 
  anus. 
  

  

  Fig. 
  5. 
  Some 
  of 
  the 
  free 
  cells 
  among 
  the 
  yolk 
  cells. 
  

  

  Author 
  del. 
  

   PLATE 
  XVIIL 
  

  

  EMBRYOLOGY 
  OF 
  CALOPTENUS 
  BPRETUS. 
  

  

  Fig. 
  1. 
  Advanced 
  embryo 
  seen 
  from 
  beneath, 
  show- 
  

   ing 
  the 
  brain 
  and 
  subcesophageal 
  gan- 
  

   glia 
  and 
  the 
  two 
  succeeding 
  pairs 
  

   (1-3) 
  ; 
  also 
  the 
  three 
  lobes 
  of 
  the 
  1st 
  

   maxiUae, 
  and 
  the 
  two 
  lobes 
  of 
  the 
  2d 
  

   maxillae. 
  

  

  Fig. 
  2. 
  Embryo 
  in 
  act 
  of 
  turning 
  : 
  ng, 
  anglia 
  ; 
  

   am, 
  amnion. 
  

  

  Author 
  del 
  

   (5) 
  

  

  Fig. 
  8. 
  Head 
  from 
  above: 
  oc, 
  anterior 
  ocellus; 
  

   ocn, 
  oceUar 
  nerve; 
  st, 
  stomodaeum. 
  

  

  Fig. 
  4. 
  One 
  of 
  the 
  procephalic 
  lobes, 
  with 
  the 
  an- 
  

   tenna 
  attached 
  ; 
  showing 
  the 
  eye, 
  the 
  

   optic 
  ganglion, 
  and 
  the 
  antenna. 
  

  

  