﻿MITRA. 
  

  

  Panama 
  Shells. 
  267 
  

  

  La 
  Paz 
  ; 
  Major 
  Rich! 
  Gould 
  Mss. 
  

  

  Panama 
  ; 
  E. 
  Jewett 
  ! 
  Gould 
  Mss. 
  

  

  Panama; 
  C. 
  B. 
  A. 
  ! 
  

   We 
  were 
  indebted 
  to 
  the 
  hermit 
  crabs 
  for 
  24 
  specimens 
  in 
  

   different 
  stages 
  of 
  growth. 
  

  

  Kiener's 
  statement 
  is 
  doubtless 
  erroneous. 
  

  

  18. 
  JTIitra 
  niicleola. 
  

  

  Synonymy. 
  

  

  Mitra 
  nucleola 
  Lam. 
  in 
  Ann. 
  Mus. 
  XVII. 
  218. 
  No. 
  64. 
  1811. 
  

  

  Lam. 
  An. 
  sans 
  Vert. 
  VII. 
  320. 
  No. 
  64. 
  Aug. 
  1822, 
  

  

  Kiener 
  Iconog. 
  p. 
  84. 
  pi. 
  26. 
  f. 
  83. 
  vars. 
  excl. 
  

  

  Pot. 
  & 
  Mich. 
  Gal. 
  Moll. 
  Mus. 
  Douai.I. 
  499. 
  pi. 
  35. 
  

  

  f. 
  15. 
  16. 
  1838. 
  

  

  Kust. 
  Conch. 
  Cab. 
  p. 
  112. 
  No. 
  95. 
  pi. 
  17. 
  f. 
  18. 
  19 
  ? 
  1844. 
  

  

  . 
  Lam. 
  An. 
  sans 
  Vert. 
  X. 
  337. 
  No. 
  64. 
  (Desh. 
  ed.) 
  1844. 
  

  

  Reeve 
  Conch. 
  Icon. 
  pi. 
  28. 
  f. 
  226. 
  Jan. 
  1845. 
  

  

  We 
  had 
  at 
  first 
  some 
  doubts 
  of 
  the 
  identity 
  of 
  our 
  speci- 
  

   mens 
  with 
  the 
  Lamarciiian 
  species, 
  but 
  the 
  differences 
  be- 
  

   tween 
  their 
  form 
  and 
  that 
  of 
  Mr. 
  Reeve's 
  figure 
  are 
  precisely 
  

   ■similar 
  to 
  those 
  between 
  the 
  half-grown, 
  and 
  the 
  mature 
  M. 
  

   granulosa 
  of 
  the 
  Caribbean 
  seas. 
  M. 
  Kiener's 
  remarks 
  leave 
  

   no 
  room 
  for 
  doubt. 
  Our 
  shells, 
  being 
  fresh, 
  are 
  of 
  a 
  deep 
  

   brown, 
  like 
  fresh 
  specimens 
  of 
  the 
  Caribbean 
  species. 
  

  

  Station. 
  — 
  Unknown. 
  

  

  Habitat. 
  — 
  Unknown 
  : 
  Lamarck 
  : 
  also 
  Potiez 
  and 
  Michaud 
  : 
  

   also 
  Reeve. 
  

   Indian 
  Ocean, 
  seas 
  of 
  Java 
  ; 
  Kiener. 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   We 
  obtained 
  11 
  specimens, 
  none 
  of 
  which 
  are 
  quite 
  ma- 
  

   ture. 
  Kiener's 
  statement 
  of 
  habitat 
  is 
  probably 
  incorrect. 
  

  

  Kiener 
  remarks 
  that 
  this 
  shell 
  is 
  only 
  a 
  variety 
  of 
  Mitra 
  

   granulosa 
  ; 
  Reeve 
  says 
  that 
  there 
  is 
  " 
  no 
  analogy 
  whatever," 
  

  

  