﻿THE 
  OCCUEBENCE 
  OF 
  EUGYRINA 
  GIG 
  ANTE 
  A 
  (LAM.) 
  IN 
  

  

  BRITISH 
  WATERS. 
  

  

  By 
  the 
  Rev. 
  A. 
  H. 
  Cooke, 
  Sc.D., 
  F.Z.S. 
  

  

  Read 
  13th 
  November, 
  1915. 
  

  

  By 
  the 
  kindness 
  of 
  a 
  friend 
  I 
  have 
  come 
  into 
  possession 
  of 
  a 
  specimen 
  

  

  of 
  Eugyrina 
  (t'ormerlj- 
  known 
  as 
  Hanella) 
  (/iffantea, 
  Lam., 
  from 
  British 
  

  

  waters. 
  The 
  specimen, 
  which 
  was 
  alive 
  when 
  taken, 
  measures 
  exactly 
  

  

  5 
  inches 
  in 
  length, 
  and 
  still 
  retains 
  the 
  operculum. 
  It 
  was 
  trawled 
  

  

  (there 
  -were 
  several 
  specimens 
  in 
  all) 
  in 
  the 
  deep 
  trougli 
  (50 
  to 
  

  

  100 
  fathoms) 
  off 
  the 
  Saltees 
  lightship, 
  between 
  Carnsore 
  Point 
  and 
  

  

  St. 
  David's 
  Head, 
  in 
  company 
  with 
  Cassidaria 
  rugosa, 
  L. 
  

  

  Unless 
  I 
  am 
  mistaken, 
  the 
  discovery 
  of 
  this 
  species 
  constitutes 
  an 
  

   important 
  addition 
  to 
  the 
  British 
  marine 
  mollusean 
  fauna. 
  

  

  Five 
  specimens 
  were 
  exhibited 
  before 
  the 
  Conchological 
  Society 
  in 
  

   May, 
  1915, 
  having 
  been 
  dredged 
  alive 
  off 
  the 
  south-west 
  coast 
  of 
  

   Ireland 
  in 
  deep 
  water, 
  also 
  with 
  C. 
  rugosa. 
  But 
  no 
  precise 
  statement 
  

   is 
  published 
  ^ 
  as 
  to 
  the 
  locality, 
  which 
  may 
  or 
  may 
  not 
  have 
  been 
  within 
  

   the 
  British 
  marine 
  area. 
  In 
  any 
  case, 
  tlie 
  present 
  specimen 
  comes 
  

   from 
  waters 
  which 
  are 
  essentially 
  British, 
  and 
  the 
  locality 
  is 
  by 
  far 
  

   the 
  most 
  northern 
  hitherto 
  recorded. 
  

  

  The 
  species 
  is 
  common 
  in 
  the 
  Mediterranean, 
  and 
  it 
  is 
  probably 
  an 
  

   accident 
  that 
  all 
  Weinkauff's 
  localities 
  (ii, 
  71) 
  are 
  west 
  of 
  Tarentum. 
  

   Ivobelt(Iconogr. 
  ii, 
  1901, 
  pp. 
  1 
  1-13) 
  records 
  it 
  from 
  the 
  Atlantic 
  only 
  

   up 
  to 
  the 
  mouth 
  of 
  the 
  Tagus. 
  The 
  TravaiUeur 
  had 
  many 
  years 
  before 
  

   dredged 
  it 
  in 
  the 
  Bay 
  of 
  Biscay 
  (Jeffreys, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

   ser. 
  V, 
  vol. 
  vi, 
  1880, 
  p. 
  318). 
  Dautzenberg 
  records^ 
  it 
  from 
  the 
  

   voyage 
  of 
  the 
  Hirondelle 
  (1886), 
  from 
  various 
  localities 
  in 
  the 
  Bay 
  of 
  

   Biscay, 
  from 
  lat. 
  43° 
  12' 
  to 
  45° 
  48' 
  N. 
  and 
  long. 
  5° 
  58' 
  to 
  11° 
  52' 
  W., 
  

   at 
  depths 
  varying 
  from 
  160 
  to 
  510 
  metres, 
  in 
  fine 
  sand, 
  coarse 
  gravel, 
  

   mud, 
  and 
  rock. 
  He 
  also 
  adds 
  that 
  it 
  was 
  met 
  with 
  in 
  the 
  Gulf 
  of 
  

   Gascony 
  by 
  the 
  TravaiUeur 
  and 
  the 
  Porcupine, 
  and 
  that 
  it 
  is 
  frequently 
  

   brought 
  \i\) 
  by 
  the 
  fishing-boats 
  from 
  off 
  Arcachon. 
  

  

  Finally, 
  A. 
  Ileynell, 
  recording 
  the 
  results 
  of 
  the 
  cruise 
  of 
  the 
  

   S.S. 
  Huxley 
  to 
  the 
  northern 
  side 
  of 
  the 
  Bay 
  of 
  Biscay 
  in 
  August, 
  

   1906, 
  mentions^ 
  Ranella 
  gigantea 
  as 
  dredged 
  in 
  109 
  fathoms 
  (four 
  

   living 
  specimens 
  — 
  two 
  male, 
  two 
  female) 
  from 
  lat. 
  47° 
  48' 
  N., 
  

   long. 
  7° 
  46' 
  W., 
  adding 
  "the 
  most 
  northerly 
  habitat 
  of 
  this 
  species 
  

   so 
  far 
  recorded 
  ". 
  

  

  It 
  appears 
  doul)tful 
  whether 
  Locard's 
  view 
  will 
  hold 
  good, 
  that 
  the 
  

   Atlantic 
  shells 
  differ 
  sufficiently 
  from 
  the 
  Mediterranean 
  to 
  justify 
  

   the 
  constitution 
  of 
  two 
  varieties, 
  atlantica 
  and 
  mediterranea. 
  The 
  

   form 
  atlantica 
  is 
  said 
  to 
  occur 
  in 
  the 
  post-Pliocene 
  of 
  Italy. 
  

  

  In 
  accordance 
  with 
  Ball's 
  classification 
  * 
  of 
  the 
  lianellidae 
  and 
  

   Tritonidoe, 
  the 
  Ranella 
  gigantea 
  of 
  Lamarck 
  is 
  now 
  separated 
  from 
  

   the 
  former 
  group, 
  and 
  is 
  at 
  present 
  the 
  sole 
  occupant 
  in 
  the 
  British 
  

   Museum 
  Collection 
  of 
  the 
  genus 
  Eagyrina 
  of 
  Dall. 
  

  

  1 
  Journ. 
  of 
  Conch., 
  xiv, 
  1915, 
  p. 
  366. 
  

  

  2 
  Mem. 
  Soc. 
  Zool. 
  France, 
  iv, 
  1891, 
  p. 
  607. 
  

  

  '^ 
  Journ. 
  Mar. 
  Biol. 
  Assoc, 
  viii, 
  1909, 
  p. 
  378. 
  

   ^ 
  Smithsonian 
  Coll., 
  xlvii, 
  1904, 
  pp. 
  114-44. 
  

  

  