﻿41 
  

  

  DESCKIPTION 
  OF 
  TWO 
  NEW 
  SPECIES 
  OF 
  ANGASELLA. 
  

   By 
  G. 
  K. 
  GuDE, 
  F.Z.S. 
  

  

  Among 
  a 
  number 
  of 
  shells 
  of 
  the 
  genus 
  Glyptorhagada, 
  submitted 
  to 
  

   me 
  for 
  examination 
  by 
  Mr. 
  G. 
  C. 
  Lemau, 
  there 
  occurred 
  a 
  single 
  

   s[)ecimen 
  labelled 
  G. 
  bordaensis, 
  Tate, 
  which 
  bears 
  no 
  resemblance 
  to 
  

   tliat 
  species, 
  and 
  belongs 
  in 
  fact 
  to 
  a 
  different 
  genus, 
  and 
  since 
  it 
  

   differs 
  from 
  all 
  known 
  forms 
  I 
  venture 
  to 
  append 
  a 
  diagnosis. 
  

  

  Mr, 
  Leman 
  informs 
  me 
  that 
  together 
  with 
  a 
  number 
  of 
  odd 
  shells 
  

   it 
  was 
  left 
  by 
  Dr. 
  Cox 
  with 
  a 
  dealer, 
  to 
  whom 
  they 
  were 
  sold 
  on 
  the 
  

   hitter's 
  death, 
  and 
  from 
  whom 
  they 
  were 
  purchased 
  in 
  Sydney. 
  

  

  AVhile 
  examining 
  the 
  species 
  of 
  Angasella 
  in 
  my 
  collection 
  I 
  came 
  

   across 
  a 
  shell 
  labelled 
  A. 
  hinshyi. 
  Brazier, 
  which 
  was 
  purchased 
  from 
  

   Messrs. 
  Sowerby 
  & 
  Fulton 
  as 
  far 
  back 
  as 
  1900, 
  but 
  the 
  name 
  never 
  

   having 
  been 
  published 
  — 
  like 
  so 
  many 
  other 
  of 
  Brazier's 
  — 
  I 
  take 
  this 
  

   opportunity 
  of 
  giving 
  a 
  description. 
  

  

  In 
  a 
  previous 
  paper 
  of 
  mine 
  — 
  these 
  Px'oceedings, 
  vol. 
  xi, 
  1915, 
  

   p. 
  321, 
  bottom 
  line 
  — 
  a 
  mistake 
  has 
  crept 
  in 
  with 
  reference 
  to 
  the 
  

   measurement 
  of 
  a 
  shell 
  in 
  Mr. 
  Ponsonby's 
  collection, 
  the 
  altitude 
  

   beino; 
  given 
  as 
  23'5 
  mm. 
  This 
  should 
  read 
  ll'o 
  mm. 
  

  

  Fig. 
  1. 
  — 
  Angasella 
  Icmani, 
  n.sp. 
  FlG. 
  2. 
  — 
  Angasella 
  Jiinsbiji, 
  n.sp. 
  

  

  Angasella. 
  lemani, 
  n.sp. 
  

  

  Shell 
  moderately 
  umbilicated, 
  subglobular, 
  white, 
  rather 
  solid 
  ; 
  

   the 
  nepionic 
  wliorls 
  smooth 
  and 
  shining, 
  the 
  later 
  whorls 
  dull 
  and 
  

   rather 
  regularly 
  plicate-costate, 
  the 
  costse 
  somewhat 
  waved 
  at 
  the 
  

   periphery, 
  becoming 
  more 
  distant 
  on 
  the 
  last 
  whorl; 
  a 
  few 
  of 
  the 
  

   later 
  ones 
  anastomosing; 
  the 
  interstices 
  finely 
  granulated; 
  spire 
  

   conoid, 
  apex 
  exserted, 
  suture 
  rather 
  deep. 
  Whorls 
  4|, 
  convex, 
  

   slightly 
  angulated 
  at 
  the 
  peri])hery, 
  becoming 
  rounded 
  tov/ards 
  the 
  

   aperture, 
  increasing 
  slowly 
  at 
  first, 
  the 
  last 
  j 
  whorl 
  rather 
  suddenly, 
  

   sliortly 
  and 
  abruptly 
  deflexed 
  in 
  front, 
  and 
  contracted 
  behind 
  the 
  

   peristome. 
  Aperture 
  oblique, 
  ovate-rotuiidate 
  ; 
  margins 
  approximate, 
  

   united 
  by 
  a 
  thin 
  callus 
  on 
  the 
  parietal 
  wall 
  ; 
  peristome 
  slightly 
  

   thickened 
  and 
  reflexed, 
  upper 
  margin 
  slightly 
  ascending, 
  outer 
  and 
  

   basal 
  margins 
  regularly 
  curved, 
  coliimellar 
  margin 
  slightly 
  dilated 
  

   and 
  receding, 
  impinging 
  upon 
  tlie 
  umbilicus, 
  which 
  is 
  deep 
  and 
  

   moderately 
  wide 
  at 
  the 
  last 
  1| 
  whorls, 
  and 
  contracts 
  suddenly 
  at 
  tiie 
  

   earlier 
  whorl 
  h. 
  

  

  