﻿IREDALE 
  : 
  NEAV 
  AND 
  OLD 
  MOLLUSCAN 
  GENERIC 
  NAMES. 
  37 
  

  

  I 
  am 
  publishing 
  tliis 
  note 
  to 
  draw 
  attention 
  to 
  tlie^ 
  fact 
  that 
  

   Dall 
  & 
  Bartsch 
  (Proc. 
  Biol. 
  Soc. 
  Wash., 
  toI. 
  xvii, 
  Feb. 
  5, 
  1904, 
  p. 
  5) 
  

   liave 
  provided 
  as 
  substitute 
  for 
  this 
  misusage 
  of 
  Eliaa 
  the 
  name 
  

  

  Tkop^as, 
  Dall 
  & 
  Bartsch, 
  

  

  introduced 
  for 
  Pyramidella 
  subulata, 
  A. 
  Adams. 
  

  

  They 
  did 
  not 
  explain 
  tliat 
  Elusa 
  was 
  typified 
  by 
  E. 
  teres, 
  which 
  _ 
  

   thev 
  considered 
  generically 
  distinct 
  from 
  tlie 
  former, 
  nor 
  tliat 
  Ehisa 
  

   was' 
  also 
  invalid. 
  In 
  the'U.S. 
  Nat. 
  Mus., 
  Bull. 
  68, 
  Dec. 
  13, 
  1909, 
  

   pp. 
  28-9, 
  they 
  did, 
  however, 
  place 
  Elusa 
  as 
  an 
  absolute 
  synonym 
  of 
  

   TnrhoniUa, 
  without, 
  however, 
  adding 
  any 
  remarks. 
  In 
  the 
  meanwliile 
  

   tlie 
  misusage 
  of 
  Elusa 
  lias 
  been 
  continued 
  by 
  Melvill, 
  Schepman, 
  and 
  

   Hedley, 
  and 
  it 
  is 
  to 
  prevent 
  the 
  further 
  perpetuation 
  of 
  this 
  error 
  that 
  

   I 
  have 
  given 
  this 
  explanation. 
  

  

  