﻿smith: 
  PELECrPODA 
  FROM 
  THE 
  PHILIPPINES. 
  19 
  

  

  these 
  are 
  about 
  twenty-four 
  in 
  number, 
  rounded, 
  sub-equal, 
  excepting 
  

   a 
  few 
  on 
  each 
  side 
  near 
  the 
  urabones 
  wliich 
  are 
  more 
  slender. 
  The 
  

   sulci 
  between 
  the 
  ribs 
  and 
  tlie 
  costsfi 
  also 
  are 
  crossed 
  by 
  very 
  fine 
  

   crowded 
  lamellae 
  ; 
  the 
  valves 
  are 
  rather 
  thick, 
  having 
  the 
  shorter 
  

   side 
  (that 
  towards 
  which 
  the 
  umbones 
  incline 
  somewhat) 
  rather 
  

   straight, 
  the 
  opposite 
  end 
  and 
  the 
  ventral 
  margin 
  being 
  broadly 
  

   curved. 
  The 
  interior 
  is 
  white, 
  stained 
  on 
  the 
  anterior 
  side 
  with 
  

   reddisli 
  brown 
  ; 
  lower 
  and 
  lateral 
  margins 
  coarsely 
  dentate 
  ; 
  hinge- 
  

   teeth, 
  about 
  twelve, 
  arranged 
  in 
  a 
  curved 
  line 
  ; 
  anterior 
  adductor 
  

   scar 
  roundish, 
  posterior 
  elongate-oval. 
  

  

  Length 
  9, 
  height 
  9, 
  diameter 
  5-5 
  mm. 
  

  

  Somewhat 
  resembling 
  G. 
  hoi/lei, 
  Melvill 
  & 
  Standen, 
  from 
  Torres 
  

   Straits, 
  but 
  with 
  the 
  umbones 
  more 
  curved 
  over 
  anteriorly, 
  higher 
  

   in 
  proportion 
  to 
  the 
  length, 
  fewer 
  and 
  coarser 
  hinge-teeth, 
  the 
  ribs 
  

   are 
  devoid 
  of 
  tubercles, 
  and 
  the 
  concentric 
  fine 
  raised 
  striae 
  or 
  

   lamellae 
  are 
  continuous 
  on 
  and 
  between 
  the 
  costae. 
  

  

  Although 
  it 
  is 
  impossible 
  to 
  say 
  that 
  tlie 
  shell 
  described 
  is 
  adult, 
  

   it 
  does 
  not 
  look 
  as 
  if 
  it 
  would 
  attain 
  much 
  larger 
  dimensions. 
  

  

  For 
  so 
  small 
  a 
  shell 
  the 
  hinge-plate 
  is 
  very 
  thick, 
  and 
  the 
  teeth 
  

   are 
  strong. 
  The 
  lines 
  of 
  growth 
  are 
  very 
  crowded, 
  and, 
  being 
  

   continuous 
  over 
  and 
  between 
  the 
  ribs, 
  they 
  have 
  a 
  wavy 
  appearance. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  I. 
  

  

  Figs. 
  1-3. 
  Antigona 
  {Ventricola) 
  mindoroensis, 
  n.sp. 
  

  

  ,, 
  4-6. 
  Lztcina 
  etiglypta, 
  n.s^. 
  

  

  ,, 
  7,8. 
  Petricola 
  digitnle, 
  n.s-p. 
  

  

  ,, 
  9, 
  10. 
  Lucina 
  transversa, 
  n.sp. 
  

  

  ,, 
  11-13. 
  Dosinia 
  suhalata, 
  n.sp. 
  

  

  ,, 
  14,15. 
  Glycimer 
  is 
  mindoroeiisis, 
  n.sp. 
  

  

  ,, 
  16-18. 
  Psammobia 
  philippinensis, 
  n.sp. 
  

  

  