﻿18 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIEXr, 
  

  

  Length 
  30, 
  lieight 
  28, 
  diameter 
  16 
  mm. 
  

  

  A 
  specimen 
  in 
  the 
  British 
  Museum, 
  said 
  to 
  come 
  from 
  Hong-Kong, 
  

   is 
  a 
  little 
  larger 
  than 
  tlie 
  Philippine 
  specimen, 
  being 
  37 
  mm. 
  long, 
  

   35 
  high, 
  and 
  21 
  in 
  diameter. 
  

  

  F". 
  rigida, 
  Dillwvn, 
  of 
  which 
  V. 
  pilulu, 
  Keeve, 
  is 
  a 
  synonym, 
  in 
  

   some 
  respects 
  resembles 
  the 
  present 
  species. 
  It 
  is, 
  however, 
  rounder, 
  

   more 
  globose, 
  differently 
  coloured, 
  has 
  less 
  erect 
  and 
  less 
  delicate 
  

   lamellce, 
  and 
  the 
  spotting 
  on 
  the 
  escutcheon, 
  in 
  the 
  left 
  valve 
  only, 
  is 
  

   peculiar. 
  It 
  is 
  a 
  West 
  Indian 
  shell. 
  

  

  LrcixA 
  ECGLYPTA, 
  n.sp. 
  PI. 
  I, 
  Figs. 
  4-6. 
  

  

  Shell 
  irregulai'ly 
  rounded, 
  inequilateral, 
  white, 
  concentrically 
  

   finely 
  closely 
  himellated 
  and 
  radially 
  costate 
  between 
  the 
  lamellae, 
  

   which 
  are 
  finely 
  frilled 
  through 
  crossing 
  the 
  costoe 
  ; 
  valves 
  moderately 
  

   thick, 
  with 
  a 
  depression 
  marking 
  off 
  a 
  wing-like 
  portion 
  below 
  the 
  

   straight 
  posterior 
  dorsal 
  margin 
  ; 
  lunula 
  very 
  small, 
  deep, 
  under 
  

   the 
  umboues, 
  which 
  are 
  contiguous, 
  but 
  the 
  tips 
  curl 
  away 
  over 
  the 
  

   lunule 
  ; 
  beyond 
  this 
  there 
  is 
  another 
  ill-defined 
  lunular 
  space 
  

   enclosed 
  by 
  a 
  slight 
  curved 
  depression 
  on 
  the 
  valves 
  ; 
  there 
  are 
  no 
  

   radiating 
  costellae 
  upon 
  tlie 
  hinder 
  wing-like 
  portion 
  of 
  the 
  valves, 
  or 
  

   upon 
  the 
  lunular 
  space, 
  and 
  consequently 
  the 
  concentric 
  lamella 
  are 
  

   simple 
  and 
  not 
  frilled; 
  interior 
  of 
  the 
  valves 
  white, 
  with 
  the 
  lower 
  

   margin 
  slightly 
  denticulated 
  ; 
  posterior 
  adductor 
  scar 
  pyriform, 
  

   anterior 
  narrow, 
  long 
  ; 
  dentition 
  normal. 
  

  

  Length 
  17, 
  heiglit 
  16, 
  diameter 
  9 
  mm. 
  

  

  This 
  species 
  bears 
  some 
  resemblance 
  to 
  L. 
  gemma, 
  Heeve, 
  in 
  respect 
  

   of 
  the 
  wing-like 
  hinder 
  part 
  of 
  the 
  valves. 
  There 
  is 
  a 
  great 
  

   difference 
  in 
  the 
  surface 
  ornamentation 
  of 
  the 
  two 
  species. 
  L. 
  gemma 
  

   has 
  no 
  radiating 
  costse 
  between 
  the 
  concentric 
  lamelloe, 
  which 
  are 
  

   beautifully 
  denticulate 
  or 
  serrate. 
  It 
  is 
  also 
  a 
  much 
  flutter 
  species 
  

   than 
  that 
  now 
  described. 
  

  

  LUCIXA 
  TRANSVERSA, 
  U.Sp. 
  PI. 
  I, 
  FigS. 
  9, 
  10. 
  

  

  Shell 
  oblong, 
  transverse, 
  almost 
  equilateral, 
  wliite, 
  concentrically 
  

   finely 
  ridged, 
  finely 
  yet 
  roughly 
  radiately 
  striated 
  between 
  the 
  

   concentric 
  ridges 
  or 
  lirjc 
  ; 
  valves 
  rounded 
  in 
  front 
  with 
  a 
  cristate 
  

   keel 
  behind, 
  marking 
  off 
  an 
  elongate, 
  lanceolate 
  escutcheon 
  exhibiting 
  

   only 
  fine 
  growth-lines 
  ; 
  lunule 
  sunken, 
  elongate, 
  marked 
  with 
  fine 
  

   lines 
  of 
  growth 
  ; 
  umbones 
  smooth 
  at 
  the 
  tips, 
  contiguous; 
  the 
  posterior 
  

   keel, 
  which 
  is 
  crested 
  with 
  the 
  concentric 
  lamellje, 
  forms 
  a 
  point 
  at 
  

   the 
  hinder 
  end 
  of 
  the 
  valves 
  ; 
  interior 
  white 
  ; 
  postei'ior 
  adductor 
  scar 
  

   rounded 
  except 
  above, 
  where 
  it 
  is 
  as 
  if 
  truncate 
  ; 
  anterior 
  scar 
  short, 
  

   irregularly 
  ovate. 
  

  

  Length 
  10-75. 
  height 
  8, 
  diameter 
  4"75 
  mm. 
  

  

  Allied 
  to 
  L. 
  fabida, 
  Reeve, 
  but 
  more 
  closely 
  concentrically 
  ridged, 
  

   and 
  not 
  so 
  strongly 
  or 
  regularly 
  striated 
  between 
  tlie 
  ridges. 
  There 
  

   are 
  also 
  differences 
  in 
  form. 
  

  

  Gltcimeris 
  mindoroensis, 
  n.sp. 
  PI. 
  I, 
  Figs. 
  14, 
  15. 
  

   Shell 
  small, 
  irregularly 
  rounded, 
  slightly 
  inequilateral, 
  whitish, 
  

   with 
  small 
  scattered 
  pinkish 
  spots 
  or 
  dots 
  upon 
  the 
  radiating 
  costae 
  ; 
  

  

  