﻿156 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  The 
  delicate 
  spiral 
  lirse, 
  very 
  close 
  and 
  fine, 
  distinguish 
  this 
  

   species 
  from 
  its 
  nearest 
  allies. 
  The 
  canal 
  is 
  slightly 
  produced, 
  ribs 
  

   stouter 
  and 
  straigliter 
  than 
  in 
  the 
  allied 
  D. 
  chjdonia, 
  Melv. 
  & 
  St. 
  

   It 
  is 
  not 
  an 
  uncommon 
  species, 
  thougli 
  endemic. 
  

  

  41. 
  Drillia 
  persica 
  (Sm.). 
  (PI. 
  IX, 
  Fig. 
  6.) 
  

   Pleurotoma 
  {Drillia) 
  persica, 
  E. 
  A. 
  Smith, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

  

  sen 
  VI, 
  vol. 
  ii, 
  1888, 
  p. 
  307. 
  

   ,, 
  ,, 
  ,, 
  Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  

  

  Lond., 
  1901, 
  p. 
  439, 
  pi. 
  xxi, 
  f. 
  14 
  

   (type). 
  

   P.G. 
  Henjam 
  Island. 
  Fao. 
  Bushire, 
  at 
  about 
  10-12 
  fathoms, 
  

   Gulf 
  of 
  Oman, 
  Muscat, 
  20 
  fathoms, 
  not 
  uncommon. 
  Off 
  Diamanayat 
  

   Island, 
  100 
  miles 
  south 
  of 
  Jask, 
  at 
  20 
  fathoms. 
  

  

  I. 
  Karachi, 
  5-15 
  fathoms, 
  in 
  thick 
  clayey 
  mud. 
  Also 
  reported 
  

   from 
  New 
  Caledonia 
  by 
  Bouge 
  & 
  Dautzenberg. 
  

  

  See 
  tlie 
  remarks 
  (afite, 
  p. 
  154) 
  under 
  lucida, 
  G. 
  &H.Nevill. 
  Mr. 
  Edgar 
  

   Smith 
  gives 
  9 
  ram. 
  as 
  maximum 
  length 
  of 
  this 
  species, 
  as 
  against 
  7*5 
  ram. 
  

   in 
  disjecta, 
  its 
  very 
  near 
  ally, 
  and 
  which 
  we 
  have 
  sunk 
  as 
  an 
  absolute 
  

   synonym 
  of 
  lucida, 
  Nev. 
  A 
  dwarf 
  form, 
  however, 
  exists, 
  6 
  mm. 
  only 
  

   in 
  length, 
  from 
  the 
  Gulf 
  of 
  Oman 
  (lat. 
  25° 
  6-5' 
  N., 
  long. 
  60° 
  39' 
  E.). 
  

   The 
  specimens 
  are 
  bright 
  brownish-pink, 
  very 
  shining. 
  It 
  may 
  not 
  

   perhaps 
  have 
  attained 
  quite 
  full 
  growth, 
  although 
  the 
  outer 
  lip 
  is 
  

   fairly 
  formed. 
  It 
  is 
  quite 
  distinct 
  from 
  granatella, 
  Melv. 
  A 
  much 
  

   larger 
  and 
  very 
  beautiful 
  variety 
  seems 
  worthy 
  of 
  a 
  varietal 
  name 
  as 
  

   follows 
  : 
  — 
  

  

  Var. 
  jacintha, 
  nov. 
  (PI. 
  IX, 
  Fig. 
  8.) 
  

   Shell 
  brilliantly 
  shining, 
  fusiform, 
  somewhat 
  attenuate, 
  white, 
  the 
  

   interstices 
  deeply 
  shaded 
  with 
  brown-pink, 
  much 
  larger 
  than 
  the 
  

   typical 
  forra 
  — 
  say, 
  long. 
  14, 
  lat. 
  4*50 
  mm. 
  

   From 
  the 
  Persian 
  Gulf. 
  

  

  If 
  it 
  were 
  not 
  for 
  intermediates, 
  this 
  might 
  be 
  considered 
  a 
  fitting 
  

   claimant 
  for 
  true 
  specific 
  rank. 
  

  

  42. 
  Drillia 
  philotima, 
  Melv. 
  & 
  St. 
  

   Drillia 
  philotima, 
  ^felvill 
  & 
  Standen, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  vii, 
  

   vol. 
  xii, 
  1903, 
  p. 
  311, 
  pi. 
  xxii, 
  f. 
  16. 
  

   P.G. 
  Off 
  tlie 
  Balirein 
  Islands, 
  30-50 
  fathoms. 
  Muscat, 
  7-30 
  

   fathoms. 
  

  

  A 
  most 
  graceful 
  species, 
  elegantly 
  fusiform, 
  scabrous, 
  many-ribbed, 
  

   white, 
  tinted 
  with 
  madder 
  brown 
  or 
  chestnut, 
  its 
  nearest 
  ally 
  being 
  

   D. 
  dives, 
  Melv. 
  & 
  St., 
  from 
  the 
  same 
  seas. 
  It 
  has 
  but 
  rarely 
  

   occurred, 
  and, 
  so 
  far 
  as 
  is 
  known, 
  is 
  endemic 
  in 
  this 
  region. 
  

  

  43. 
  Drillia 
  prunulum, 
  Melv. 
  & 
  St. 
  

   Drillia 
  prunulum, 
  ^Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1901, 
  

   }). 
  439, 
  pi. 
  xxiv, 
  f. 
  2. 
  

   P.G. 
  Henjam 
  Island, 
  Koweit, 
  10 
  fathoms. 
  Gulf 
  of 
  Oman, 
  Muscat, 
  

   15 
  fathoms. 
  

   I. 
  Karachi 
  (September, 
  1910). 
  

  

  