﻿162 
  PK0CKKDING8 
  OF 
  THK 
  MALACOLOOICAL 
  SOCIETT. 
  

  

  Bouge 
  & 
  Dautzenberg' 
  it 
  is 
  considered 
  merely 
  an 
  unarmed 
  variety 
  

   of 
  Drillia 
  {Tylotia) 
  canicularis 
  (Bolt.). 
  

  

  II. 
  Sub-family 
  Clavattjlin^. 
  

   Genus 
  ORTHOSURCULA, 
  Casey, 
  1904. 
  

   60. 
  Orthosubcula 
  austealis 
  (lloissy). 
  

   Murex 
  turris 
  australis, 
  Chemnitz, 
  Conch. 
  Cab., 
  vol. 
  xi, 
  1795, 
  pi. 
  ex, 
  

  

  f. 
  1827-8. 
  

   Pleurotoma 
  australis, 
  lloissy, 
  Hist. 
  nat. 
  Moll, 
  [suite 
  a 
  Buffon], 
  

   vol. 
  vi, 
  1805, 
  p. 
  72. 
  

   ,, 
  ,, 
  Kiener, 
  Icon. 
  Coq. 
  viv., 
  1839, 
  p. 
  6, 
  pi. 
  iv, 
  f. 
  1. 
  

  

  Surcula 
  ,, 
  Tryon, 
  Man. 
  Conch.,vol. 
  vi, 
  1884, 
  p. 
  236, 
  pi. 
  ii, 
  

  

  f. 
  9, 
  and 
  pi. 
  v, 
  f. 
  58. 
  

   Orthoturcula 
  ,, 
  T. 
  L. 
  Casey, 
  Trans. 
  Acad. 
  Sci. 
  St. 
  Louis^ 
  

  

  vol. 
  xiv, 
  1904, 
  p. 
  151. 
  

   I. 
  South 
  of 
  Bombay 
  (Lieut. 
  -Col. 
  Henry 
  D. 
  Olivier). 
  

   The 
  headquarters 
  of 
  this 
  species 
  are 
  China 
  and 
  the 
  Philippine 
  

   Isles 
  ; 
  it 
  has 
  not 
  yet 
  been 
  found 
  in 
  the 
  Persian 
  Gulf 
  area 
  proper. 
  

   Casey, 
  in 
  subdividing 
  the 
  group, 
  considers 
  the 
  types 
  of 
  his 
  Orthosurcula 
  

   to 
  be 
  the 
  Upper 
  Eocene 
  species, 
  Pleurotoma 
  lofigiforma, 
  Aldrich, 
  and 
  

   Surcula 
  transversaria, 
  Lamarck. 
  

  

  Genus 
  SURCULA, 
  H. 
  & 
  A. 
  Adams, 
  1853. 
  

   61. 
  Surcula 
  catena 
  (Reeve). 
  

   Pleurotoma 
  catena, 
  Reeve, 
  Conch. 
  Icon., 
  i, 
  1843, 
  pi. 
  v, 
  f. 
  36. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  Muscat, 
  20-40 
  fathoms. 
  April, 
  1912. 
  

  

  M.C. 
  Charbar. 
  In 
  young 
  condition 
  5-10 
  fathoms, 
  fine 
  adult 
  

   examples 
  20-30 
  fathoms 
  ; 
  all 
  on 
  soft 
  muddy 
  bottom. 
  

  

  A 
  very 
  select 
  form, 
  which 
  apparently 
  finds 
  its 
  headquarters 
  in 
  these 
  

   seas. 
  The 
  largest 
  example 
  dredged 
  off 
  Muscat 
  measures 
  in 
  length 
  

   71 
  mm. 
  

  

  This 
  exceedingly 
  beautiful 
  species 
  is 
  allied 
  to 
  fulminata, 
  Kien. 
  

   Found 
  also 
  at 
  Aden 
  (Shopland). 
  

  

  62. 
  Surcula 
  cingulifera 
  (Lam.). 
  

   Pleurotoma 
  cingulifera, 
  Lamarck, 
  Anim. 
  sans 
  Vert., 
  vol. 
  vii, 
  1822, 
  p. 
  94. 
  

   ,, 
  ,, 
  Reeve, 
  Conch. 
  Icon., 
  vol. 
  i, 
  1843, 
  pi. 
  i, 
  f. 
  1. 
  

  

  P.G. 
  Generally 
  distributed 
  in 
  the 
  Gulf, 
  extending 
  to 
  the 
  Gulf 
  of 
  

   Oman, 
  5-10 
  fathoms, 
  sandy 
  mud. 
  The 
  largest 
  example, 
  If 
  inches 
  in 
  

   length, 
  occurred 
  in 
  lat. 
  26° 
  50' 
  K., 
  long. 
  54° 
  50' 
  E. 
  It 
  extends 
  to 
  

   the 
  Philippines 
  (Hidalgo). 
  

  

  Var. 
  amicta, 
  Sm. 
  

   Pleurotoma 
  amicta, 
  E. 
  A. 
  Smith, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  iv, 
  

   vol. 
  xix, 
  1877, 
  p. 
  488. 
  

   P.G. 
  Gulf 
  of 
  Oman, 
  off 
  Jask, 
  180 
  fathoms, 
  1914. 
  

   I. 
  Bombay 
  (Abercrombie) 
  ; 
  Bassein 
  Harbour 
  as 
  far 
  south 
  as 
  

   Goa 
  (Lieut.-Col. 
  H. 
  D. 
  Olivier). 
  This 
  was 
  first 
  described 
  from 
  the 
  

   Hawaiian 
  Islands, 
  and 
  is 
  reported 
  from 
  Aden 
  (Shopland). 
  

  

  ' 
  Journ. 
  de 
  Conch., 
  tom. 
  Ixi, 
  1913, 
  p. 
  136. 
  

  

  