﻿PEDIPES. 
  Panama 
  Shells. 
  431 
  

  

  San 
  Miguel 
  ; 
  Lt. 
  Green 
  ! 
  Mus. 
  Essex 
  Inst, 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   290 
  specimens 
  were 
  collected. 
  The 
  specimens 
  which 
  Lieut. 
  

   Green 
  collected 
  are 
  of 
  extraordinary 
  size. 
  

  

  Family— 
  AUEICULID^. 
  

   308. 
  Pedipes 
  an^ulata. 
  Nov. 
  sp. 
  

  

  Shell 
  ovate 
  globose 
  : 
  dark 
  brownish 
  red, 
  white 
  in 
  the 
  aper- 
  

   ture 
  : 
  solid 
  ; 
  with 
  crowded 
  wrinkled 
  unequal 
  raised 
  spiral 
  

   lines, 
  which 
  are 
  much 
  finer 
  on 
  the 
  upper 
  part 
  of 
  the 
  whorls, 
  

   and 
  which 
  on 
  the 
  middle 
  of 
  the 
  whorls 
  are 
  larger, 
  and 
  are 
  dis- 
  

   posed 
  with 
  one 
  or 
  two 
  smaller 
  lines 
  between 
  the 
  larger 
  lines 
  : 
  

   apex 
  subacute 
  : 
  spire 
  with 
  the 
  outlines 
  somewhat 
  curvilinear; 
  

   whorls 
  a 
  little 
  more 
  than 
  four, 
  very 
  angular, 
  concave 
  above 
  the 
  

   angle, 
  imbricately 
  appressed 
  at 
  the 
  suture 
  ; 
  last 
  whorl 
  large 
  and 
  

   ventricose, 
  subangular 
  below 
  the 
  middle 
  : 
  aperture 
  subelliptical 
  : 
  

   labrum 
  very 
  sharp, 
  sinuated 
  by 
  the 
  angle 
  on 
  the 
  whorls, 
  a 
  little 
  

   within 
  much 
  thickened 
  by 
  a 
  white 
  callus, 
  which 
  is 
  interrupted 
  

   at 
  the 
  angle, 
  and 
  next 
  below 
  it, 
  is 
  developed 
  into 
  a 
  long 
  tooth 
  : 
  

   columella 
  expanded 
  with 
  a 
  broad 
  flat 
  surface, 
  with 
  two 
  acute 
  

   transverse 
  plaits, 
  of 
  which 
  the 
  lower 
  one 
  is 
  smaller 
  : 
  labium 
  

   with 
  a 
  very 
  large 
  lamelliform 
  spiral 
  plait 
  above 
  the 
  columella 
  : 
  

   umbilicus 
  wanting. 
  

  

  Mean 
  divergence 
  about 
  90°; 
  length 
  .25 
  inch; 
  breadth 
  .19 
  

   inch 
  ; 
  length 
  of 
  spire 
  .1 
  inch. 
  

  

  Station. 
  — 
  Under 
  stones 
  at 
  high 
  water 
  mark. 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

  

  We 
  collected 
  90 
  specimens 
  at 
  the 
  foot 
  of 
  the 
  sea 
  wall 
  at 
  

   Panama. 
  This 
  and 
  the 
  two 
  species 
  of 
  Truncatella 
  were 
  found 
  

   only 
  in 
  one 
  place 
  less 
  than 
  two 
  yards 
  in 
  diameter. 
  

  

  Mr. 
  Cuming 
  obtained 
  at 
  Iquiqui 
  a 
  very 
  small 
  species 
  of 
  

   Pedipes, 
  which 
  has 
  not 
  been 
  described. 
  We 
  believe 
  that 
  these 
  

   two 
  are 
  the 
  only 
  known 
  species 
  in 
  this 
  zoological 
  province. 
  

  

  