﻿ADEORBis. 
  Panama 
  Shells. 
  407 
  

  

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

   1 
  specimen 
  was 
  found 
  in 
  the 
  sand. 
  

  

  256. 
  Litiopa 
  (?) 
  saxicola. 
  Nov. 
  sp. 
  

  

  Shell 
  long 
  ovate 
  conic 
  : 
  pale 
  horn 
  color, 
  subtransparent 
  : 
  sitr- 
  

   face 
  covered 
  with 
  deep 
  regular 
  crowded 
  spiral 
  striae 
  ; 
  apex 
  

   acute 
  : 
  spire 
  with 
  the 
  outlines 
  slightly 
  curvilinear 
  : 
  whorls 
  five, 
  

   convex, 
  with 
  a 
  well 
  impressed 
  suture 
  ; 
  last 
  whorl 
  rather 
  ventri- 
  

   cose 
  : 
  aperture 
  broadly 
  ovate, 
  acute 
  above 
  : 
  labrum 
  thin 
  : 
  labium 
  

   with 
  a 
  distinct 
  deposit 
  : 
  umbilicus 
  wanting. 
  

  

  Mean 
  divergence 
  about 
  45° 
  ; 
  length 
  .14 
  inch 
  ; 
  breadth 
  .075 
  

   inch 
  ; 
  length 
  of 
  spire 
  .07 
  inch. 
  

  

  The 
  generic 
  character 
  of 
  this 
  species 
  is 
  doubtful. 
  The 
  shell 
  

   has 
  the 
  appearance 
  of 
  a 
  Litiopa, 
  but 
  the 
  station 
  is 
  that 
  of 
  Cingiila, 
  

   to 
  which 
  Dr. 
  Gould 
  is 
  inclined 
  to 
  refer 
  it. 
  We 
  leave 
  it 
  doubtfal, 
  

   until 
  the 
  soft 
  parts 
  shall 
  have 
  been 
  examined. 
  

  

  Station. 
  — 
  Under 
  stones 
  at 
  low 
  water 
  mark. 
  

  

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

  

  7 
  specimens 
  were 
  found 
  on 
  the 
  reef. 
  

  

  257. 
  Adeorbis 
  (?) 
  abjecta. 
  Nov. 
  sp. 
  

  

  Shell 
  subglobular 
  : 
  sometimes 
  wholly 
  of 
  a 
  yellowish 
  white 
  or 
  

   wholly 
  of 
  a 
  dingy 
  black, 
  or 
  partly 
  of 
  each 
  color 
  : 
  with 
  several 
  

   stout 
  spiral 
  raised 
  lines 
  and 
  more 
  or 
  less 
  distinct 
  intermediate 
  

   strioB 
  on 
  the 
  upper 
  part 
  of 
  the 
  whorls 
  : 
  apex 
  subacute 
  : 
  spire 
  

   small, 
  much 
  eroded 
  in 
  mature 
  shells 
  : 
  whorls 
  three 
  or 
  more, 
  con- 
  

   vex, 
  with 
  a 
  distinct 
  suture 
  ; 
  last 
  whorl 
  ventricose: 
  aperture 
  

   effuse, 
  nearly 
  semicircular, 
  the 
  inner 
  lip 
  being 
  straight 
  : 
  umbili- 
  

   cus 
  small. 
  

  

  Mean 
  divergence 
  about 
  110° 
  ; 
  length 
  .1 
  inch 
  ; 
  breadth 
  .09 
  

   inch 
  ; 
  length 
  of 
  spire 
  .045 
  inch. 
  

  

  A. 
  scaber 
  Phil., 
  from 
  Panama, 
  is 
  described 
  as 
  having 
  sublam- 
  

   ellar 
  strise. 
  of 
  growth 
  and 
  an 
  acute 
  periphery 
  of 
  the 
  last 
  whorl. 
  

   Our 
  shell 
  resembles 
  Littorina 
  porcata 
  Phil, 
  of 
  the 
  Gallapago 
  Is. 
  

  

  