﻿[67] 
  Transformations 
  of 
  N. 
  Ltjcilius. 
  179 
  

  

  X. 
  TRANSFORMATIONS 
  OF 
  NISONIADES 
  LUCILIUS 
  LINTX 
  

  

  The 
  egg 
  measures 
  .03 
  of 
  an 
  inch 
  in 
  diameter. 
  Its 
  shape 
  was 
  

   not 
  noted. 
  An 
  example 
  examined 
  was 
  marked 
  with 
  four- 
  

   teen 
  ribs 
  and 
  twenty-five 
  transverse 
  striae. 
  

  

  The 
  larva 
  before 
  its 
  second 
  molting 
  measured 
  .30 
  of 
  an 
  

   inch 
  in 
  length, 
  and 
  previous 
  to 
  its 
  third 
  molting 
  .55 
  of 
  an 
  

   inch. 
  After 
  the 
  molting, 
  its 
  length 
  was 
  .70 
  of 
  an 
  inch. 
  Its 
  

   body 
  bears 
  numerous 
  short, 
  white, 
  downy 
  hairs, 
  and 
  is 
  

   marked 
  with 
  white 
  dots. 
  Its 
  color 
  is 
  yellowish-green, 
  espe- 
  

   cially 
  on 
  the 
  incisures, 
  with 
  a 
  blue-green 
  vascular 
  line. 
  The 
  

   legs 
  are 
  tipped 
  with 
  fuscous, 
  particularly 
  the 
  anterior 
  pair 
  ; 
  

   the 
  prolegs 
  are 
  green. 
  The 
  segments 
  show 
  four 
  annulations 
  

   on 
  the 
  posterior 
  half. 
  

  

  * 
  The 
  body 
  of 
  the 
  larva 
  is 
  translucent, 
  allowing 
  the 
  internal 
  

   organs 
  to 
  be 
  seen. 
  On 
  the 
  eighth 
  segment 
  an 
  oblong 
  yellow 
  

   spot 
  on 
  each 
  side 
  of 
  the 
  vascular 
  line, 
  as 
  in 
  Pier 
  is 
  oleracea, 
  

   marks 
  the 
  position 
  of 
  some 
  of 
  the 
  viscera, 
  and 
  on 
  the 
  second 
  

   segment 
  is 
  a 
  similar 
  mesial 
  mark. 
  The 
  pulsations 
  of 
  the 
  dor- 
  

   sal 
  vessel 
  are 
  quite 
  conspicuous. 
  With 
  a 
  magnifier, 
  ramifica- 
  

   tions 
  of 
  the 
  branchiae 
  are 
  to 
  be 
  seen, 
  surrounding 
  the 
  stigmata. 
  

  

  After 
  its 
  third 
  molting, 
  the 
  two 
  brown 
  spots 
  on 
  the 
  head 
  of 
  

   the 
  larva 
  appear, 
  which 
  thenceforth 
  are 
  so 
  marked 
  a 
  feature. 
  

   At 
  maturity 
  the 
  larva 
  has 
  attained 
  a 
  length 
  of 
  .8 
  of 
  an 
  inch, 
  

   with 
  a 
  diameter 
  in 
  its 
  broadest 
  part 
  of 
  .16 
  of 
  an 
  inch 
  ; 
  diam- 
  

   eter 
  of 
  head 
  .10 
  of 
  an 
  inch. 
  

  

  The 
  last 
  molting 
  was 
  on 
  August 
  3d, 
  and 
  on 
  the 
  6th 
  the 
  

   chrysalis 
  was 
  formed. 
  

  

  The 
  chrysalis 
  is 
  cylindro-conical 
  in 
  form, 
  not 
  angulated 
  ; 
  

   thorax 
  slightly 
  elevated 
  ; 
  head-case 
  rounded 
  in 
  front, 
  de- 
  

   pressed 
  below 
  a 
  line 
  drawn 
  from 
  the 
  anal 
  spine 
  across 
  the 
  

   bases 
  of 
  the 
  wings 
  to 
  the 
  humeral 
  tubercle 
  — 
  this 
  tubercle 
  

   dark 
  brown 
  in 
  color, 
  cylindrical, 
  truncated 
  at 
  the 
  apex, 
  and 
  

   located 
  a 
  little 
  before 
  the 
  base 
  of 
  the 
  anterior 
  wings. 
  The 
  

   stigmata 
  are 
  white. 
  

  

  At 
  this 
  stage 
  the 
  transparency 
  of 
  the 
  chrysalis 
  permits 
  the 
  

   rapid 
  pulsations 
  within 
  to 
  be 
  clearly 
  seen. 
  The 
  nervulation 
  

  

  