﻿MELVILL 
  : 
  TURKID^ 
  OF 
  THE 
  TERSIAN 
  GULF, 
  ETC. 
  151 
  

  

  Gray.' 
  Tlie 
  type, 
  of 
  which 
  we 
  give 
  a 
  figure, 
  is 
  a 
  pale 
  shell, 
  of 
  

   refiued 
  sculpture, 
  tinted 
  with 
  pale 
  brown. 
  Most 
  of 
  the 
  numerous 
  

   specimens 
  we 
  have 
  placed 
  under 
  this 
  name 
  seem 
  hest 
  included 
  under 
  

   mtertincta, 
  Sm., 
  a 
  species 
  with 
  more 
  prolonged 
  canal, 
  and 
  decided 
  

   marking 
  and 
  coloration, 
  especially 
  interstitially. 
  The 
  type 
  came 
  

   from 
  Aden. 
  

  

  24. 
  Drillia 
  cecchi, 
  Jouss. 
  

  

  Drillia 
  cecchi, 
  Jousseaume, 
  Le 
  jS'aturaliste, 
  1891, 
  p. 
  232. 
  

  

  r.G. 
  Henjam 
  Island 
  (1906), 
  Gulf 
  of 
  Oman, 
  Jask. 
  

  

  M.C. 
  Local 
  at 
  3-30 
  fathoms, 
  muddj' 
  sand. 
  

  

  A 
  pure-white 
  species, 
  which 
  seems 
  constant 
  in 
  its 
  somewhat 
  

   critical 
  characters. 
  The 
  type 
  came 
  from 
  Aden, 
  and 
  it 
  has 
  since 
  been 
  

   again 
  collected 
  there 
  by 
  Commander 
  E, 
  E. 
  Shopland." 
  Near 
  to 
  

   L. 
  theoreta, 
  Melv., 
  which 
  is 
  a 
  highly 
  coloured 
  species, 
  with 
  more 
  

   abbreviate 
  canal. 
  

  

  25. 
  Drillia 
  chimastrum, 
  sp. 
  nov. 
  (PI. 
  X, 
  Fig. 
  11.) 
  

  

  D. 
  testa 
  compacta, 
  fusiformi, 
  solidula, 
  nivea, 
  unicolorata, 
  anfractibns 
  

   in 
  specimine 
  maximo 
  ad 
  11, 
  tribus 
  supernis 
  planiuscnlis, 
  lacteo- 
  

   vitreis, 
  cseteris 
  ventricosulis, 
  ad 
  suturas 
  impressis, 
  longitudinaliter 
  

   costatis, 
  costis 
  incrassatis, 
  anfractus 
  ultimi 
  numero 
  tredecira, 
  undique 
  

   spiraliter 
  regulariter 
  liratis, 
  apertura 
  breviter 
  ovata, 
  intus 
  alba, 
  sinu 
  

   lato, 
  canali 
  paullum 
  producto, 
  margine 
  columellari 
  fere 
  recto. 
  

  

  (xf^cjLicKnpoi', 
  winter 
  apparel, 
  from 
  the 
  snowy-white 
  colour.) 
  

  

  Long. 
  16, 
  lat. 
  6 
  sp. 
  max. 
  

  

  P.G. 
  Mussandam, 
  30 
  fathoms. 
  Malcolm 
  Inlet, 
  35 
  fathoms. 
  Gulf 
  

   of 
  Oman, 
  Diamanayat 
  Isles, 
  20 
  fathoms 
  (15 
  April, 
  1912). 
  

  

  A 
  pure-white, 
  somewhat 
  compressed 
  and 
  compact 
  species, 
  the 
  

   whorls 
  ventricose, 
  compressed 
  suturalh', 
  longitudinally 
  ribbed, 
  ribs 
  

   straight, 
  incrassate, 
  crossed 
  throughout 
  by 
  spiral 
  filose 
  liroe, 
  mouth 
  

   subovate, 
  sinus 
  distinct, 
  broadened, 
  columellar 
  margin 
  almost 
  straight. 
  

   It 
  seems 
  near 
  to 
  putillus, 
  Reeve, 
  and 
  perhaps 
  spectrum 
  of 
  the 
  same 
  

   authoi', 
  but 
  is 
  a 
  far 
  more 
  solid 
  species 
  than 
  the 
  last-named. 
  

  

  26. 
  Drillia 
  clydonia, 
  Melv. 
  & 
  St. 
  

  

  Drillia 
  clydonia, 
  Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1901, 
  

   p. 
  437, 
  pi. 
  xxiii, 
  f. 
  24. 
  

  

  P.G. 
  Henjam 
  Island, 
  1906. 
  Muscat, 
  20-35 
  fathoms, 
  1914. 
  Gulf 
  

   of 
  Oman, 
  lat. 
  24° 
  49' 
  N., 
  long. 
  57° 
  56' 
  E., 
  225 
  fathoms, 
  mud. 
  

  

  A 
  pretty 
  species, 
  not 
  variable, 
  with 
  obliquely 
  flexuose 
  longitudinal 
  

   ribs, 
  surface 
  either 
  whitish, 
  stramineous, 
  or 
  slightly 
  rufous, 
  shining, 
  

   canal 
  slightly 
  produced 
  ; 
  most 
  nearly 
  allied 
  to 
  B. 
  07nanensis, 
  M. 
  & 
  St. 
  

  

  27. 
  Drillia 
  crenularis 
  (Lam.). 
  

   Fletirotoma 
  crenularis, 
  Lamarck, 
  Anim. 
  sans 
  Vert., 
  vol. 
  vii, 
  1822, 
  p. 
  92. 
  

   ,, 
  ,, 
  Heeve, 
  Conch. 
  Icon., 
  vol. 
  i, 
  1843, 
  pi. 
  vii, 
  f. 
  54. 
  

  

  For 
  localities 
  see 
  under 
  variety 
  A. 
  

  

  1 
  Ann. 
  Nat. 
  Hist. 
  (Charlesworth), 
  vol. 
  i, 
  1838, 
  p. 
  29. 
  

  

  2 
  Proc. 
  Malac. 
  Soc. 
  Lond., 
  vol. 
  v, 
  1902, 
  p. 
  172. 
  

  

  