﻿310 
  PROCKICDINGS 
  OF 
  THK 
  Jl 
  ALACOLOGICAL 
  SOCIKTY. 
  

  

  V. 
  lingua-fells, 
  Eeeve, 
  part, 
  fig. 
  13a; 
  Clessin, 
  pi. 
  vii, 
  figs. 
  2, 
  3. 
  

  

  V. 
  phasianoptera, 
  Eeeve, 
  fig. 
  11 
  ; 
  Clessin, 
  fig. 
  5, 
  copy 
  of 
  Eeeve. 
  

  

  V. 
  nocardia, 
  Eeeve, 
  fig. 
  2 
  ; 
  Clessin, 
  pi. 
  vii, 
  fig. 
  5, 
  copy 
  of 
  Eeeve. 
  

  

  V. 
  hicms, 
  Eeeve 
  {non 
  Lamarck), 
  fig. 
  16 
  ; 
  Clessin, 
  pi. 
  vi, 
  fig. 
  3, 
  copy 
  

  

  of 
  Eeeve. 
  

   F. 
  crenulata, 
  Eeeve, 
  fig. 
  9; 
  Clessin, 
  pi. 
  vi, 
  figs. 
  1, 
  2. 
  

   V. 
  Hilgelii 
  (Parreiss 
  MSS.), 
  Kiister, 
  Conch. 
  Cab., 
  Malleacea, 
  p. 
  16, 
  

  

  not 
  figured, 
  1841. 
  

   V. 
  peregrina, 
  inclipa, 
  navicula, 
  claripta, 
  tigrina, 
  ringella, 
  pulcJiella, 
  

   scrobula, 
  umbotropa, 
  cochlearina, 
  virginis, 
  cilestrina, 
  mirula, 
  umho- 
  

   versa, 
  mitis, 
  hlanda, 
  spongiarum 
  {non 
  Lamarck), 
  valida, 
  vuma, 
  

   cimhula, 
  and 
  caramagnm, 
  all 
  described 
  and 
  figured 
  by 
  de 
  Gregorio, 
  

   Eull. 
  Soc. 
  Mai. 
  Ital., 
  vol. 
  x, 
  pp. 
  58-70, 
  pis. 
  i-v 
  ; 
  vol. 
  xi, 
  p. 
  121. 
  

   Reniella 
  dilatata, 
  Swainson 
  (?), 
  Malacology, 
  p. 
  386, 
  fig. 
  127, 
  1840, 
  

   unrecognizable. 
  

   Hah. 
  — 
  Eed 
  Sea, 
  Aden, 
  Zanzibar, 
  Mauritius, 
  Maldive 
  Islands, 
  

   Singapore. 
  These 
  localities 
  are 
  probably 
  all 
  reliable. 
  Australia 
  and 
  

   Philippines 
  respectively 
  for 
  phasianoptera, 
  Eeeve, 
  Ilugelii, 
  Kiister, 
  

   and 
  Mans, 
  Eeeve 
  {non 
  Lamarck), 
  are 
  more 
  or 
  less 
  uncertain. 
  

  

  The 
  majority 
  of 
  the 
  forms 
  named 
  and 
  described 
  by 
  de 
  Gregorio 
  

   were 
  supposed 
  to 
  have 
  been 
  exti'acted 
  from 
  sponges 
  from 
  the 
  Tunisian 
  

   coast, 
  but 
  it 
  seems 
  very 
  doubtful 
  whether 
  they 
  really 
  occur 
  in 
  the 
  

   Mediterranean, 
  and 
  the 
  Marchesa 
  di 
  Monterosato 
  ^ 
  has 
  already 
  

   expressed 
  his 
  doubts 
  upon 
  the 
  matter. 
  He 
  suggests 
  that 
  they 
  were 
  

   all 
  derived 
  from 
  Eed 
  Sea 
  sponges, 
  which 
  seems 
  most 
  probable, 
  as 
  

   Vulsella 
  had 
  never 
  before 
  been 
  recognized 
  as 
  a 
  Mediterranean 
  genus, 
  

   with 
  the 
  exception 
  of 
  Eisso's 
  account 
  of 
  V. 
  margaritacea, 
  supposed 
  

   (but 
  evidently 
  erroneously) 
  to 
  occur 
  on 
  the 
  shores 
  of 
  the 
  Alpes 
  

   Maritimes. 
  The 
  genus 
  also 
  is 
  not 
  known 
  from 
  any 
  of 
  the 
  

   Mediterranean 
  post-Pliocene 
  deposits 
  which 
  one 
  would 
  have 
  expected 
  

   if 
  the 
  recent 
  forms 
  really 
  occurred 
  in 
  that 
  sea. 
  

  

  It 
  would 
  be 
  useless 
  to 
  discuss 
  individually 
  the 
  species 
  or 
  forms 
  

   described 
  by 
  de 
  Gregorio, 
  as 
  only 
  an 
  examination 
  of 
  the 
  types 
  them- 
  

   selves 
  can 
  show 
  their 
  features 
  and 
  value. 
  I 
  raay 
  say, 
  however, 
  

   it 
  is 
  most 
  astonishing 
  that 
  in 
  some 
  cases 
  (e.g. 
  tigrina, 
  scrobula, 
  

   umbotropa, 
  virginea, 
  hlanda, 
  etc.) 
  such 
  dead, 
  worn, 
  or 
  young 
  shells 
  

   should 
  have 
  been 
  described 
  as 
  distinct. 
  

  

  V. 
  riigosa 
  never 
  occurs 
  as 
  large 
  as 
  the 
  adult 
  V. 
  vulsella, 
  in 
  which 
  

   species 
  the 
  sculpture 
  seems 
  to 
  be 
  finer, 
  that 
  is, 
  the 
  wavy 
  longitudinal 
  

   rows 
  of 
  scales 
  are 
  more 
  numerous, 
  and 
  the 
  brown 
  lineations 
  are 
  finer 
  

   and 
  often 
  darker 
  in 
  tint. 
  The 
  umbones 
  in 
  some 
  specimens 
  of 
  

   V. 
  rugosa 
  are 
  slightly 
  divergent, 
  but 
  not 
  so 
  strongly 
  as 
  in 
  attenuata. 
  

   A 
  whitish 
  variety 
  of 
  V. 
  rugosa 
  without 
  any 
  trace 
  of 
  colour-markings 
  

   occurs 
  at 
  the 
  Mauritius. 
  

  

  A 
  series 
  of 
  specimens 
  collected 
  at 
  Aden 
  by 
  Major 
  Yerbury 
  were 
  

   recorded 
  as 
  V. 
  vulsella 
  (Smith, 
  Proc. 
  Zool. 
  Soc, 
  1891, 
  p. 
  434). 
  These 
  

   are 
  typical 
  examples 
  of 
  V. 
  rugosa. 
  

  

  Two 
  specimens 
  of 
  V. 
  Hugelii, 
  purchased 
  by 
  the 
  Museum 
  from 
  

  

  ^ 
  Nomenclatura 
  Conch. 
  Mediter., 
  1884, 
  p. 
  7. 
  

  

  