﻿NO. 
  1959. 
  8IPUNCULID8 
  OF 
  EASTERN 
  NORTH 
  AMERICA— 
  GEROULD. 
  435 
  

  

  and 
  Billow. 
  The 
  length 
  of 
  the 
  trunk 
  in 
  the 
  largest 
  of 
  these 
  speci- 
  

   mens 
  is 
  about 
  85 
  mm., 
  diameter 
  6 
  mm.; 
  the 
  length 
  of 
  the 
  smallest 
  

   52 
  mm., 
  with 
  an 
  introvert 
  of 
  12 
  mm. 
  The 
  trunk 
  of 
  another 
  is 
  58 
  

   mm. 
  long. 
  It 
  is 
  probable 
  that 
  the 
  differences 
  between 
  the 
  two 
  "varie- 
  

   ties" 
  is 
  due 
  to 
  the 
  direct 
  action 
  of 
  surrounding 
  conditions 
  and 
  not 
  

   to 
  inheritance. 
  

  

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