﻿Partula 
  and 
  Achatinella. 
  43 
  

  

  curvilinear 
  : 
  whorls 
  nearly 
  seven, 
  quite 
  convex, 
  with 
  the 
  suture 
  

   well 
  impressed 
  ; 
  last 
  whorl 
  often 
  somewhat 
  flattened 
  on 
  the 
  

   middle 
  : 
  aperture 
  subovate, 
  with 
  the 
  columellar 
  fold 
  well 
  de- 
  

   veloped, 
  with 
  the 
  deposit 
  on 
  the 
  inner 
  side 
  very 
  thin 
  ; 
  labrum 
  

   sharp, 
  not 
  reflected, 
  well 
  thickened 
  within. 
  

  

  Mean 
  divergence 
  45° 
  ; 
  length 
  1 
  inch 
  ; 
  breadth 
  .5 
  inch 
  ; 
  

   length 
  of 
  aperture 
  .38 
  inch. 
  

  

  Variety 
  (?) 
  lata 
  has 
  a 
  divergence, 
  in 
  a 
  specimen 
  about 
  

   two-thirds 
  grown, 
  of 
  56°. 
  

  

  Habitat, 
  Sandwich 
  Islands. 
  

  

  This 
  fine 
  species 
  is 
  named 
  in 
  honor 
  of 
  Mr. 
  Henry 
  Dimond, 
  

   of 
  Honolulu, 
  to 
  whom 
  I 
  have 
  been 
  much 
  indebted 
  for 
  the 
  

   shells 
  of 
  these 
  islands. 
  

  

  Achatinella 
  decepta. 
  Shell 
  rather 
  thick, 
  ovate-conic, 
  

   much 
  elongated 
  : 
  dingy 
  white 
  or 
  very 
  pale 
  yellowish 
  brown 
  ; 
  

   with 
  a 
  dark 
  brown 
  or 
  greenish 
  epidermis, 
  which 
  is 
  interrupted 
  

   more 
  or 
  less 
  in 
  transverse 
  stripes, 
  and 
  often 
  terminates 
  ab- 
  

   ruptly 
  on 
  the 
  periphery 
  of 
  the 
  last 
  whorl 
  : 
  with 
  irregular 
  

   transverse 
  striae 
  ; 
  without 
  spiral 
  striae 
  : 
  apex 
  subacute 
  : 
  spire 
  

   long, 
  with 
  the 
  outlines 
  moderately 
  curvilinear 
  : 
  whorls 
  nearly 
  

   seven 
  and 
  one-half, 
  rather 
  convex, 
  with 
  a 
  well 
  impressed 
  su- 
  

   ture 
  ; 
  last 
  whorl 
  rather 
  small 
  : 
  aperture 
  small, 
  ovate 
  ; 
  lip 
  

   sharp, 
  not 
  expanded, 
  moderately 
  thickened 
  within 
  ; 
  columel- 
  

   lar 
  fold 
  moderately 
  developed. 
  

  

  Mean 
  divergence 
  38° 
  ; 
  length 
  .72 
  inch 
  ; 
  breadth 
  .33 
  inch 
  ; 
  

   length 
  of 
  aperture 
  .25 
  inch. 
  

  

  This 
  shell 
  is 
  figured 
  by 
  Mr. 
  Reeve 
  (Icon. 
  f. 
  42 
  a, 
  non 
  42 
  b) 
  

   as 
  a 
  variety 
  of 
  A. 
  rubens 
  Gould. 
  We 
  think 
  it 
  is 
  entitled 
  to 
  

   specific 
  rank. 
  It 
  is 
  usually 
  more 
  slender, 
  and 
  always 
  more 
  

   conical 
  and 
  less 
  ovate, 
  the 
  last 
  whorl 
  being 
  shorter, 
  and 
  not 
  so 
  

   regularly 
  rounded, 
  and 
  the 
  outlines 
  of 
  the 
  spire 
  being 
  much 
  

   less 
  curvilinear, 
  A. 
  rubens, 
  always 
  retaining 
  its 
  more 
  regu- 
  

   larly 
  rounded 
  outlines, 
  varies 
  in 
  its 
  proportions 
  in 
  extreme 
  

  

  