﻿150 
  PfiOCEKDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  This 
  species 
  lias 
  not 
  been 
  found 
  since 
  by 
  Mr. 
  Townsend. 
  It 
  is 
  a 
  

   small 
  (long. 
  12 
  mm.) 
  shining 
  white 
  shell, 
  superficially 
  fasciolarioid. 
  

  

  20. 
  Drillia 
  angriasensis, 
  Melv. 
  

   JDrillia 
  angriasensis, 
  Meivill, 
  Mem. 
  Manch. 
  L. 
  & 
  P. 
  Soc, 
  vol. 
  xlii. 
  

   No. 
  4, 
  1898, 
  p. 
  11, 
  pi. 
  i, 
  f. 
  3. 
  

   I. 
  Angrias 
  Bank, 
  west 
  of 
  Bombay 
  (Captain 
  Tindall). 
  

   A 
  white, 
  smooth 
  shell, 
  with 
  nodulous 
  angled 
  whorls, 
  and 
  almost 
  

   plain 
  last 
  whorl, 
  lip 
  effuse, 
  base 
  sub-truncate. 
  The 
  type, 
  in 
  the 
  British 
  

   Museum, 
  Natural 
  History, 
  is 
  still 
  unique. 
  

  

  21. 
  Drillia 
  athyrma, 
  Melv. 
  & 
  St. 
  

  

  Drillia 
  athyrma, 
  Meivill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1901, 
  

   p. 
  436, 
  pi. 
  xxiii, 
  f. 
  22. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  N., 
  long. 
  57° 
  59' 
  E., 
  37 
  fathoms, 
  

   sand 
  and 
  mud. 
  

  

  Also 
  at 
  142 
  fathoms, 
  off 
  Has 
  Maidani. 
  

  

  The 
  examples 
  subsequently 
  secured 
  are 
  more 
  mature 
  than 
  vras 
  the 
  

   original 
  type. 
  The 
  outer 
  lip 
  in 
  the 
  Kas 
  Maidani 
  examples 
  is 
  lobed, 
  

   somewhat 
  after 
  the 
  manner 
  of 
  Pleurotoma 
  lobata, 
  Sowerby.' 
  The 
  largest 
  

   example, 
  unfortunately 
  with 
  imperfect 
  outer 
  lip, 
  measures 
  longi- 
  

   tudinally 
  26 
  mm., 
  is 
  whitish, 
  tlie 
  spiral 
  raised 
  ridge 
  just 
  below 
  the 
  

   suture 
  of 
  each 
  whorl 
  is 
  pronounced, 
  with 
  ribs 
  thick, 
  straight, 
  and 
  

   somewhat 
  oblique 
  on 
  the 
  last 
  Avhorl 
  only. 
  In 
  a 
  smaller, 
  and 
  more 
  

   perfect 
  specimen, 
  the 
  labral 
  lobe 
  projects 
  almost 
  at 
  right 
  angles 
  to 
  

   the 
  slightly 
  produced 
  canal. 
  The 
  aperture 
  is 
  milky-white 
  within, 
  

   whorls 
  in 
  young 
  specimens 
  very 
  closely 
  spirally 
  striate, 
  slight 
  chestnut 
  

   maculations 
  very 
  sparsely 
  cover 
  the 
  surface 
  in 
  certain 
  examples, 
  in 
  

   others 
  the 
  coloration 
  is 
  simple, 
  dead 
  white 
  or 
  palest 
  oclireous. 
  

  

  22. 
  Drillia 
  audax, 
  Melv. 
  & 
  St. 
  

   Drillia 
  audax, 
  Meivill 
  & 
  Standen, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  vii, 
  

   vol. 
  xii, 
  1903, 
  p. 
  313, 
  pi. 
  xxiii, 
  f. 
  1. 
  

   P.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  N., 
  long. 
  56° 
  54' 
  E., 
  156 
  fathoms. 
  

   A 
  distinct 
  species, 
  both 
  in 
  sculpture 
  and 
  painting. 
  It 
  has 
  not 
  

   been 
  noticed 
  elsewhere 
  in 
  the 
  Persian 
  Gulf 
  region 
  save 
  in 
  the 
  

   particularlj^ 
  productive 
  dredging 
  mentioned 
  above. 
  It, 
  however, 
  is 
  

   of 
  fairly 
  wide 
  distribution, 
  evidenced 
  by 
  its 
  occurrence 
  in 
  the 
  Savu 
  

   Sea, 
  East 
  Indies 
  {Siboga 
  Expedition 
  ).- 
  

  

  23. 
  Drillia 
  batnhami 
  (Sm.). 
  (PI. 
  VIII, 
  Fig. 
  9.) 
  

  

  Pleuroto7na 
  {Drillia) 
  baynhavii, 
  E. 
  A. 
  Smith, 
  Proc. 
  Zuol. 
  Soc, 
  1891, 
  

   p. 
  404, 
  pi. 
  xxxiii, 
  f. 
  2. 
  

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

   I. 
  Karachi. 
  

   This 
  seems 
  very 
  nearly 
  allied, 
  if 
  not 
  identical, 
  with 
  Drillia 
  suturalis, 
  

  

  ^ 
  Marine 
  Investig. 
  South 
  Africa, 
  vol. 
  ii, 
  1903, 
  p. 
  213, 
  pi. 
  iv, 
  f. 
  9. 
  

   ^ 
  M. 
  M. 
  Scbepman, 
  Prosobr. 
  Siboga 
  Exped., 
  1913, 
  p. 
  414. 
  

  

  