﻿JIELVJLL 
  : 
  TURRIDiE 
  OF 
  THE 
  PERSIAN 
  GULF, 
  ETC. 
  15S 
  

  

  seas 
  and 
  a 
  deep-water 
  form. 
  Tlie 
  distribution 
  of 
  D.^avidulais 
  wide, 
  

   including 
  Hong-Kong 
  and 
  China 
  proper. 
  But 
  the 
  largest 
  example 
  in 
  

   my 
  collection 
  is 
  from 
  the 
  northern 
  sliore 
  of 
  the 
  Red 
  Sea, 
  that 
  was 
  

   picked 
  up 
  on 
  a 
  sandy 
  beacli 
  many 
  years 
  ago 
  by 
  my 
  cousin, 
  the 
  

   liite 
  Miss 
  Mary 
  Alexina 
  Haldane, 
  and 
  kindly 
  presented 
  to 
  me. 
  

   This 
  is 
  about 
  2J 
  inches 
  in 
  lengtli 
  (say 
  68 
  mm.), 
  pale 
  straw 
  coloured 
  

   throughout, 
  and 
  in 
  perfect 
  condition. 
  

  

  With 
  this 
  species 
  I 
  am 
  inclined 
  also 
  to 
  place 
  PI. 
  {Drillia)- 
  

   latisinnata 
  ' 
  of 
  Smith. 
  I 
  possess 
  a 
  co-type 
  of 
  this 
  " 
  ex 
  auctore 
  ", 
  and 
  

   at 
  the 
  suggestion 
  of 
  Mr. 
  Le 
  Brockton 
  Tonilin, 
  have 
  well 
  compared 
  it 
  

   with 
  a 
  large 
  and 
  variable 
  series 
  of 
  flavidula 
  in 
  my 
  collection. 
  

   Mr. 
  Smith 
  admits 
  the 
  near 
  alliance 
  of 
  the 
  two 
  species, 
  and 
  lays 
  stress 
  

   on 
  "the 
  upper 
  half 
  of 
  each 
  whorl 
  being 
  nearly 
  smooth, 
  as 
  the 
  

   plications 
  extend 
  scarcely 
  beyond 
  the 
  central 
  large 
  spiral 
  liration 
  

   which 
  marks 
  the 
  angulations 
  of 
  the 
  whorls". 
  This 
  may 
  be 
  true 
  as 
  

   regards 
  the 
  type, 
  but 
  there 
  are 
  several 
  intermediates, 
  and 
  I 
  think 
  we 
  

   may 
  consider 
  Jfavulula 
  as 
  a 
  protean 
  species, 
  and 
  what 
  may 
  be 
  called 
  

   tlie 
  form 
  latisinuata 
  does 
  likewise 
  occur 
  in 
  the 
  Persian 
  Gulf. 
  

  

  31, 
  Drillia 
  granatella, 
  M. 
  & 
  St. 
  

  

  Lrillia 
  granatclla, 
  Melvill 
  & 
  Standen, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  vii, 
  

   vol. 
  xii, 
  1903, 
  p. 
  312, 
  pi. 
  xxii, 
  f. 
  18. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  Muscat, 
  15 
  fathoms. 
  

  

  A 
  very 
  pretty 
  little 
  form, 
  ])omegranate 
  pink 
  in 
  coloxir, 
  whence 
  the 
  

   specific 
  name. 
  Allied 
  to 
  persica, 
  Sm., 
  but 
  characteristic 
  and 
  peculiar. 
  

  

  32. 
  Drillia 
  incerta 
  (Sm.). 
  (Bl. 
  YIII, 
  Fig. 
  5.) 
  

  

  Pletirotoma 
  (^Drillia) 
  incerta, 
  E. 
  A. 
  Smith, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

   ser. 
  IV, 
  vol. 
  xix, 
  1877, 
  p. 
  496. 
  

  

  P.G. 
  Henjam 
  Island, 
  10-14 
  fathoms 
  (1906). 
  Gulf 
  of 
  Oman, 
  

   lat. 
  24° 
  55' 
  N., 
  long. 
  57° 
  59' 
  E., 
  205 
  fathoms, 
  sand. 
  Also 
  iu 
  

   contiguous 
  sounding, 
  at 
  37 
  fathoms, 
  sand 
  and 
  mud. 
  

  

  A 
  species 
  of 
  somewliat 
  uncertain 
  status, 
  and 
  therefore 
  well 
  named. 
  

   Tlie 
  prolonged 
  canal 
  serves 
  slightly 
  to 
  distinguish 
  it, 
  and 
  its 
  pale, 
  

   colourless 
  wlioiis; 
  the 
  sinus, 
  too, 
  is 
  remarkably 
  patent, 
  but 
  it 
  is 
  not 
  

   easy 
  to 
  characterize 
  its 
  qualities 
  for 
  purpose 
  of 
  differentiation. 
  We 
  

   would 
  refer 
  to 
  the 
  autlior's 
  description. 
  The 
  type 
  now 
  figured 
  came 
  

   fiom 
  New 
  Guinea. 
  But 
  few 
  examples 
  have 
  been 
  yet 
  found 
  in 
  the 
  

   Persian 
  Gulf 
  area. 
  D.jousseaumei, 
  Melv., 
  from 
  Aden 
  (Shopland), 
  is 
  

   to 
  be 
  compared 
  with 
  it. 
  This 
  last 
  has 
  not 
  occurred, 
  so 
  far, 
  elsewhere. 
  

  

  33. 
  Drillia 
  inconstans 
  (Sm.). 
  (PL 
  X, 
  Fig. 
  1.) 
  

   Pleurotoma 
  ( 
  — 
  ?) 
  inconstans, 
  E. 
  A. 
  Smith, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

  

  ser. 
  IV, 
  vol. 
  xv, 
  1875, 
  p. 
  417. 
  

   P.G. 
  Henjam 
  Island, 
  14 
  fathoms. 
  Shaikh 
  Sliuaib 
  Island, 
  Pasni, 
  

   40 
  fathoms. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  55' 
  N., 
  long. 
  57° 
  09' 
  E., 
  

   37 
  fathoms, 
  sand 
  and 
  mud. 
  

  

  1 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  iv, 
  vol. 
  xix, 
  1877, 
  p. 
  494. 
  

  

  