﻿MELVILL 
  : 
  TUUniD^ 
  OF 
  TOE 
  PIUtSIAX 
  GULF, 
  KiC. 
  195 
  

  

  Off 
  iruscat, 
  20 
  fathoms 
  (1907). 
  

  

  Tlie 
  nearest 
  ally 
  to 
  tliis 
  finely 
  sculptured 
  species 
  seems 
  to 
  be 
  

   D. 
  macandrewi 
  (Smith), 
  from 
  wliicii 
  it 
  can 
  readily 
  be 
  distinguislied. 
  

   Tlie 
  lower 
  whorls 
  are 
  rurelj' 
  variced 
  (see 
  remarks 
  under 
  this 
  last- 
  

   named 
  species). 
  

  

  173. 
  Daphnella 
  XYLois, 
  M. 
  & 
  St, 
  

  

  Daphnella 
  xylo'is, 
  Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1901, 
  

   p. 
  449, 
  pi. 
  xxiv, 
  f. 
  17. 
  

  

  P.G. 
  Muscat, 
  10-20 
  fathoms, 
  coral 
  sand. 
  

  

  The 
  nuclear, 
  finely 
  cancelhite, 
  whorls 
  are 
  ochreous 
  tinted. 
  Whole 
  

   shell 
  closely 
  reticulate. 
  When 
  in 
  live 
  condition 
  much 
  tinted 
  with 
  

   dark-brown 
  markings. 
  iS^ear 
  D. 
  thia, 
  M. 
  & 
  St., 
  Avhich 
  is 
  a 
  more 
  

   coarsely 
  grained 
  species. 
  

  

  § 
  Subgen. 
  diaugasma, 
  nov. 
  

  

  Shell 
  minute, 
  oliviform, 
  smoother 
  microscopically 
  spirallj' 
  striolate, 
  

   mainly 
  on 
  each 
  side 
  of 
  the 
  sutnres, 
  leaving 
  the 
  central 
  portion 
  of 
  the 
  

   whorl 
  plain, 
  in 
  form 
  cylindrical 
  or 
  elongate, 
  compact, 
  only 
  slightly 
  

   impressed 
  at 
  the 
  sutures, 
  nuclear 
  whorls 
  closely 
  and 
  very 
  finely 
  

   cancellate, 
  whorls 
  semi-pellucid, 
  unicolorous 
  white, 
  or 
  flecked 
  with 
  

   pale 
  stramineous, 
  mouth 
  narrowly 
  oblong, 
  outer 
  lip 
  nearly 
  straight, 
  

   slightly 
  thickened, 
  sinus 
  hardly 
  expressed. 
  

  

  {Siavynaf^m, 
  transparency, 
  from 
  its 
  vitreous 
  appearance.) 
  

  

  174. 
  Dapenella 
  (Dxaugasma) 
  epicharta 
  (M. 
  & 
  St.). 
  

  

  Daphnella 
  epicliarta, 
  Melvill 
  & 
  Standen, 
  Ann. 
  Mag. 
  Nat. 
  Ilist., 
  scr. 
  tii, 
  

   vol. 
  xii, 
  1903, 
  p. 
  317, 
  pi. 
  xxiii, 
  f. 
  10. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  N., 
  long. 
  56° 
  54' 
  E., 
  150 
  fathoms. 
  

  

  This 
  little 
  species, 
  which 
  is 
  in 
  length 
  but 
  5 
  mm., 
  seems 
  to 
  appertain, 
  

   with 
  one 
  or 
  two 
  others, 
  to 
  a 
  distinct 
  and 
  peculiar 
  section 
  of 
  Daphnella, 
  

   so 
  I 
  now 
  propose 
  a 
  new 
  subgeneric 
  title 
  for 
  it. 
  Fleurotoma 
  olyra 
  and 
  

   vitrea, 
  both 
  of 
  lieeve,' 
  judging 
  by 
  figure 
  and 
  description, 
  are 
  nearly 
  

   allied, 
  and 
  would 
  probably 
  be 
  included 
  in 
  the 
  same 
  category. 
  The 
  

   first 
  of 
  these, 
  olyra, 
  comes 
  nearest 
  to 
  epicharta. 
  It 
  can 
  be 
  distinguished 
  

   by 
  its 
  much 
  larger 
  size, 
  say 
  11 
  mm. 
  long, 
  aperture 
  wider, 
  shorter 
  

   spire, 
  and 
  pink-tipped 
  apex. 
  It 
  is 
  likewise 
  semi-transparent, 
  and 
  the 
  

   very 
  delicate 
  spiral 
  striation 
  across 
  the 
  whorls 
  is 
  represented 
  by 
  the 
  

   author 
  as 
  sometimes 
  evanescent 
  altogether. 
  PL 
  vitrea 
  is 
  also, 
  as 
  its 
  

   name 
  would 
  imply, 
  glassy 
  and 
  pellucid, 
  smooth 
  centrally, 
  but 
  spirally 
  

   striate, 
  as 
  is 
  epicharta, 
  round 
  the 
  sutures. 
  This 
  is 
  a 
  more 
  elongate 
  

   shell, 
  8 
  mm. 
  in 
  length, 
  whorls 
  slightly 
  ventricose, 
  outer 
  lip 
  expanded, 
  

   and 
  came 
  from 
  Singapore 
  and 
  Mindanao 
  Island, 
  Philippines 
  (Cuming). 
  

   D. 
  epicharta 
  is 
  more 
  oliviform, 
  and 
  might 
  also 
  easily 
  be 
  mistaken 
  for 
  

   a 
  species 
  of 
  ^sopus, 
  but 
  there 
  can 
  be 
  no 
  doiibt 
  of 
  its 
  pleurotomid 
  

   character. 
  

  

  ' 
  Concli. 
  Icon., 
  vol. 
  i, 
  1845, 
  pi. 
  xxiv, 
  f. 
  207, 
  and 
  pi. 
  xxxiii, 
  f. 
  300. 
  

  

  