﻿EXPLANATION 
  OF 
  PLATES. 
  

  

  PLATE 
  XIX. 
  

  

  EMBRYOLOGY 
  OF 
  CALOPTENUS 
  SPRETUS. 
  

  

  Fig. 
  1. 
  Section 
  (No. 
  1) 
  of 
  head 
  of 
  embryo, 
  showing 
  

   the 
  brain 
  and 
  eyes 
  : 
  /, 
  white 
  or 
  fibrous 
  

   matter; 
  gc, 
  outer 
  layer 
  of 
  ganglion- 
  

   cells 
  enveloping 
  the 
  white 
  or 
  fibrous 
  

   matter. 
  

  

  Fig. 
  2. 
  Section 
  (No. 
  6) 
  through 
  suboesophageal 
  

   ganglion, 
  sg, 
  and 
  stomach 
  (stm) 
  ; 
  y, 
  

   yolk. 
  

  

  Fig. 
  3. 
  Section 
  (No. 
  8) 
  through 
  end 
  of 
  oesopha- 
  

   gus 
  (oe), 
  also 
  passing 
  through 
  the 
  six 
  

   stomachic 
  coeca 
  (coec) 
  and 
  ganglion 
  

   (g) 
  and 
  a 
  pair 
  of 
  the 
  legs 
  (leg). 
  

  

  Fig. 
  4. 
  Section 
  (No. 
  11) 
  through 
  the 
  stomach 
  and 
  

   coeca 
  and 
  ganglion. 
  

  

  Fig. 
  5. 
  Portion 
  of 
  the 
  serous 
  layer 
  : 
  x 
  5B. 
  

  

  Fig. 
  6. 
  Section 
  of 
  a 
  trachea. 
  

  

  Author 
  del. 
  

  

  PLATE 
  XX. 
  

  

  EMBRYOLOGY 
  OF 
  CAL0PTENU8 
  ATLANI6. 
  

  

  Fig, 
  

   Fig 
  

  

  Fig. 
  1. 
  Embryo 
  10 
  days 
  old. 
  Section 
  No. 
  35 
  from 
  

   end 
  (the 
  sections 
  numbered 
  from 
  the 
  

   end 
  of 
  abdomen 
  forwards), 
  through 
  the 
  

   brain 
  (br) 
  and 
  optic 
  ganglion 
  (op. 
  g) 
  

   and 
  eyes. 
  

  

  Fig. 
  2. 
  Amoeboid 
  cells 
  of 
  the 
  protoplasmic 
  net- 
  

   work 
  enclosing 
  the 
  yolk-balls 
  : 
  n, 
  nu- 
  

   cleus. 
  

  

  Fig. 
  3. 
  Section 
  No. 
  26 
  through 
  the 
  same 
  embryo, 
  

   passing 
  through 
  the 
  heart 
  (M), 
  the 
  

  

  Author 
  del. 
  

  

  ganglion 
  (fir), 
  the 
  trachea 
  (er),and 
  the 
  

   legs 
  (I). 
  

   3*. 
  Section 
  of 
  the 
  main 
  trachea, 
  enlarged. 
  

   3^. 
  Section 
  through 
  the 
  chorion 
  (ch), 
  and 
  the 
  

   serous 
  membrane 
  (s. 
  m),with 
  the 
  nu- 
  

   cleus 
  (n). 
  

   Fig. 
  4. 
  Section 
  27 
  through 
  the 
  heart. 
  

   Fig. 
  5. 
  Section 
  20, 
  showing 
  the 
  protoplasmic 
  net- 
  

   work 
  in 
  the 
  yolk. 
  

  

  PLATE 
  XXI. 
  

  

  embryology 
  of 
  caloptenus 
  atlanis. 
  

  

  Fig. 
  

  

  Fig. 
  5a. 
  Section 
  through 
  the 
  yolk 
  : 
  n, 
  nuclei 
  stain- 
  

   ing 
  red 
  with 
  carmine 
  ; 
  am, 
  protoplas- 
  

   mic 
  threads 
  arising 
  from 
  the 
  amnion. 
  

  

  Fig. 
  6. 
  Section 
  7 
  through 
  the 
  same 
  embryo 
  as 
  on 
  

   PI. 
  XX 
  : 
  gl, 
  inner 
  or 
  glandular 
  layer 
  

   of 
  intestine; 
  fl, 
  outer 
  or 
  muscular 
  

   (faser) 
  layer; 
  ut, 
  urinary 
  tubes 
  ; 
  uV, 
  

   the 
  same 
  seen 
  in 
  section. 
  

  

  Fig. 
  7. 
  Section 
  No. 
  5, 
  through 
  the 
  intestine; 
  do?, 
  

   dorsal 
  organ 
  ? 
  ; 
  hi, 
  blastoderm. 
  

  

  Author 
  del 
  

  

  Fig. 
  8a 
  

  

  Fig. 
  

  

  8. 
  Section 
  No. 
  4 
  from 
  end 
  of 
  body, 
  through 
  

  

  the 
  proctodseum 
  (jpr). 
  

   Same 
  section 
  as 
  8, 
  showing 
  section 
  of 
  the 
  

   proctodseum, 
  pr: 
  fl, 
  faser 
  layer; 
  gl, 
  

   glandular 
  layer 
  of 
  the 
  proctodaeum; 
  

  

  am, 
  amnion; 
  &Z., 
  blastoderm; 
  much 
  

  

  enlarged. 
  

  

  9. 
  Section 
  No. 
  3, 
  passing 
  through 
  the 
  edge 
  of 
  

  

  the 
  proctodseum: 
  c/i, 
  chorion; 
  do, 
  dor- 
  

   sal 
  organ, 
  X 
  | 
  A. 
  

  

  PLATE 
  XXII. 
  

  

  embryology 
  of 
  xyleborus 
  and 
  hylurgops. 
  

  

  Fig. 
  1. 
  Xyleborus 
  ccelatus, 
  embryo 
  24 
  hours 
  after 
  

   fertilization 
  : 
  pb, 
  primitive 
  band 
  ; 
  ser, 
  

   serous 
  membrane: 
  pi, 
  procephalic 
  

   lobe. 
  

  

  Fig. 
  2. 
  Xyleborus 
  ccelatus 
  .• 
  a^-a'', 
  arthromeres 
  of 
  

   head 
  and 
  thorax; 
  1-8, 
  first 
  eight 
  ab- 
  

   dominal 
  ai'thromeres 
  ; 
  th, 
  protoplasmic 
  

   threads 
  connecting 
  cells 
  of 
  amnion 
  

   with 
  the 
  serous 
  membrane. 
  

  

  Fig. 
  3. 
  Xyleboms 
  ccelatus, 
  dorsal 
  view 
  of 
  embryo 
  : 
  

   pi, 
  procephalic 
  lobes. 
  

  

  Fig. 
  4. 
  Hylurgops 
  pinifex, 
  embryo. 
  Gissler 
  del. 
  

  

  Fig. 
  5. 
  Xyleborus 
  ccelatus, 
  embryo 
  about 
  fouj 
  

   days 
  old, 
  showing 
  spiracles 
  (sp^-sp^ 
  

   in 
  each 
  thoracic 
  arthromere, 
  or 
  eleven 
  

  

  Fig. 
  

  

  Fig. 
  

  

  pairs 
  of 
  spiracles 
  in 
  all: 
  tr, 
  tracheae? 
  

  

  1-4, 
  antennae 
  and 
  mouth 
  parts. 
  

   Xyleborus 
  ccelatus, 
  head 
  of 
  embryo, 
  seen 
  

  

  from 
  beneath. 
  

   Hylurgops 
  pinifex, 
  advanced 
  embryo. 
  

  

  G-issler 
  del. 
  

   Fig. 
  8. 
  Hylurgops 
  pinifex, 
  larva 
  1.5™™ 
  long: 
  sf, 
  

  

  prothoracic 
  stigma; 
  st, 
  stomach; 
  i, 
  

  

  intestine; 
  r, 
  rectum. 
  

   Fig. 
  9. 
  Hylurgops 
  pinifex: 
  a, 
  three 
  IsiTvadimmeii- 
  

  

  ately 
  after 
  hatching; 
  b, 
  one, 
  enlarged. 
  

  

  Gissler 
  del. 
  

   Fig. 
  10. 
  Hylurgops 
  pinifex, 
  end 
  of 
  body 
  of 
  larva 
  

  

  1.5™™ 
  in 
  length: 
  a, 
  anus; 
  as, 
  anal 
  

  

  sucker. 
  Gissler 
  del. 
  

  

  Figs. 
  1-3, 
  5 
  drawn 
  by 
  the 
  author. 
  

   (6) 
  

  

  