﻿MELVILL 
  : 
  PyRAMIDELLID^ 
  OF 
  THK 
  PERSIAN 
  GULF, 
  ETC. 
  201 
  

  

  Pyrgtjlina 
  epenteoma 
  (Melvill). 
  

  

  JRissoa 
  epentroma, 
  Melvill, 
  Proc. 
  Malac. 
  Soc, 
  vol. 
  ii, 
  p. 
  110, 
  pi. 
  viii, 
  

  

  fig. 
  23. 
  

   Mumiola 
  epentroma, 
  Melv., 
  Proc. 
  Zool. 
  Soc, 
  vol. 
  ii, 
  p. 
  392, 
  1901. 
  

  

  Hob. 
  — 
  I. 
  Karaclii, 
  mud 
  -covered 
  rocks 
  at 
  low 
  tide; 
  Bombay 
  

   (Abercrombie). 
  

  

  I 
  am 
  still 
  diffident 
  about 
  the 
  proper 
  location 
  of 
  this 
  species. 
  It 
  is 
  

   pure 
  white, 
  compact, 
  of 
  some 
  substance, 
  rissoiform, 
  with 
  thickened 
  

   rounded 
  peristome, 
  incrassate 
  longitudinal 
  ribs, 
  interstitially 
  striate, 
  

   six-whorled, 
  somewhat 
  turreted, 
  columella 
  simple. 
  

  

  Pykgulina 
  epentkomidea, 
  Melvill. 
  

  

  Pyrgulina 
  epentromidea, 
  Melvill, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  vol. 
  iv, 
  p. 
  94, 
  

   pi. 
  i, 
  fig. 
  15, 
  1899. 
  

  

  Eah.—V.G^. 
  Gulf 
  of 
  Oman, 
  25 
  fathoms 
  in 
  mud, 
  lat. 
  26° 
  23' 
  N., 
  

   long. 
  54° 
  53' 
  E. 
  Also 
  very 
  abundant 
  at 
  156 
  fathoms. 
  

  

  A 
  beautiful 
  shining 
  white 
  little 
  shell, 
  with 
  strong 
  columellar 
  

   plait, 
  many 
  ribbed, 
  every 
  part 
  being 
  smooth. 
  

  

  Ptrgulina 
  heevierioides 
  (Melvill). 
  

  

  Ododomia 
  (^Pt/rgulina) 
  hervierioides, 
  Melvill, 
  Proc. 
  Malac. 
  Soc, 
  vol. 
  vii, 
  

   p. 
  74, 
  pi. 
  vii, 
  fig. 
  12. 
  

  

  Mab.—V.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  68' 
  N., 
  long. 
  56° 
  54' 
  E., 
  

   156 
  fathoms, 
  shell-sand. 
  

  

  The 
  ribs 
  and 
  interstices 
  are 
  quite 
  smooth 
  in 
  this 
  species, 
  which 
  in 
  

   contour 
  resembles 
  jP. 
  thelxinoa 
  often 
  occurring 
  with 
  it. 
  

  

  Pyegulina 
  milicha,^ 
  n.sp. 
  PL 
  VI, 
  Pig. 
  8. 
  

  

  P. 
  testa 
  perparva, 
  cylindrica, 
  solidiuscula, 
  perlsevi, 
  nitida, 
  anfractibus 
  

   5^, 
  quorum 
  duo 
  apicales, 
  Iseves, 
  bulbosi, 
  heterostrophi, 
  cseteris 
  apud 
  

   suturas 
  impressis, 
  gradatulis, 
  arete 
  et 
  recte 
  longitudiualiter 
  costulatis, 
  

   costis, 
  simul 
  ac 
  interstitiis, 
  Isevibus, 
  apertura 
  anguste 
  ovata, 
  labro 
  

   paullum 
  eff'uso, 
  columella 
  uniplicata. 
  .Long. 
  2, 
  lat. 
  1 
  mm. 
  

  

  Hah. 
  — 
  I. 
  Karachi. 
  

  

  M.C. 
  Charbar, 
  40 
  fathoms. 
  

  

  A 
  very 
  minute, 
  compact, 
  solidly 
  built 
  shell, 
  very 
  smooth, 
  closely 
  

   longitudinally 
  straightly 
  libbed, 
  ribs 
  incrassate, 
  interstices 
  showing 
  

   no 
  strialion. 
  The 
  nuclear 
  whorls 
  are 
  large 
  proportionately, 
  hetero- 
  

   strophe, 
  globular, 
  white, 
  the 
  remaining 
  whorls 
  shouldered, 
  and 
  some 
  

   specimens 
  show 
  signs 
  of 
  spiral 
  gemmulation 
  below 
  the 
  sutures. 
  

   I 
  have 
  seen 
  several 
  examples, 
  and 
  consider 
  that 
  it 
  occupies 
  a 
  somewhat 
  

   isolated 
  position 
  in 
  the 
  genus. 
  

  

  Pyegulina 
  pieinthklla,' 
  n.sp. 
  PI. 
  VI, 
  Fig. 
  9. 
  

  

  P. 
  testa 
  perrainuta, 
  delicata, 
  attenuata, 
  cylindrica, 
  angustissime 
  

   rimata, 
  alba, 
  paruin 
  nitente, 
  anfractibus 
  5-6, 
  quorum 
  duo 
  heterostrophi, 
  

   bulbosi, 
  ad 
  apicem 
  ipsum 
  deplanata, 
  cseteris 
  gradatulis, 
  apud 
  suturas 
  

  

  ' 
  /^eiAi^Ts, 
  ;^'u..tl('. 
  - 
  TTilpivs, 
  ;) 
  l);!skct 
  : 
  1' 
  \v\clu'r-\v()ik. 
  

  

  