﻿STKES 
  : 
  MOLLUSCA 
  OF 
  " 
  POECDPINE 
  " 
  EXPEDITIONS. 
  339 
  

  

  Bistrihution. 
  — 
  jS^orth 
  Atlantic 
  to 
  the 
  Bay 
  of 
  Biscay. 
  A 
  post- 
  

   Tertiary 
  fossil. 
  

  

  jSTeptunea 
  (Sipho) 
  Islandica 
  (Cheranitz). 
  

  

  Fusus 
  IslandicuSy 
  Chemnitz, 
  Conch. 
  Cab., 
  iv, 
  p. 
  159, 
  pi. 
  cxli, 
  figs. 
  

  

  1312, 
  1313. 
  

   Neptunea 
  hlandica, 
  Chemnitz 
  : 
  Kobelt, 
  Icon. 
  Europ. 
  Meeresconch., 
  i, 
  

   p. 
  71. 
  

   " 
  Porcupine 
  " 
  Expedition, 
  1869, 
  Stations 
  10, 
  84 
  ; 
  1870, 
  Station 
  13. 
  

   Bistrihution. 
  — 
  Arctic 
  seas 
  and 
  deep 
  water 
  in 
  the 
  North 
  Atlantic. 
  

  

  JN'epttjnea 
  (Sipho) 
  Jeffeeysiana 
  (Fischer). 
  

  

  Fusus 
  Jeffrey 
  sianus, 
  Eischer, 
  J. 
  Conchyl., 
  xvi, 
  p. 
  37, 
  1868. 
  

  

  Neptunea 
  Jeffreysicma, 
  Eischer 
  : 
  Kobelt, 
  Icon. 
  Europ. 
  Meeresconch., 
  

  

  i, 
  p. 
  75. 
  

   Fusus 
  buccinatus, 
  Jeffreys, 
  non 
  Lamarck. 
  

  

  "Porcupine" 
  Expedition, 
  1869, 
  Station 
  10 
  ; 
  1870, 
  Station 
  30. 
  

  

  Distribution. 
  — 
  British 
  Isles 
  to 
  the 
  Bay 
  of 
  Biscay. 
  

  

  JSTeptunea 
  (Sipho) 
  lachesis 
  (Morch). 
  

  

  Fusus 
  lachesis, 
  Morch, 
  J. 
  Conchyl., 
  xvii, 
  p. 
  397, 
  1869. 
  

  

  Neptunea 
  lachesis, 
  Morch: 
  Kobelt, 
  Icon. 
  Europ. 
  Meeresconch., 
  i, 
  p. 
  83. 
  

  

  Tritonium 
  terehrales, 
  Sars 
  MS. 
  [non 
  Neptunea 
  terebralis, 
  Gould, 
  of 
  

  

  Avhich 
  N. 
  Spitzbergensis, 
  live., 
  is 
  a 
  synonym]. 
  

   jSTon 
  Fusus 
  lachesis, 
  E. 
  Sismonda, 
  Syn., 
  2nd 
  ed., 
  p. 
  38, 
  1847 
  [nom. 
  

   sol.] 
  ; 
  D'Orbigny, 
  Prodrome, 
  iii, 
  p. 
  68, 
  1852 
  [nom. 
  sol.] 
  ; 
  

   Bellardi, 
  Moll. 
  Terz. 
  Piemonte, 
  i, 
  138, 
  1872 
  [descr. 
  and 
  fig.]. 
  

  

  "Porcupine" 
  Expeilition, 
  1869, 
  Station 
  51. 
  

  

  Distribution. 
  — 
  North 
  Atlantic. 
  

  

  Inasmuch 
  as 
  Fusus 
  lachesis, 
  Sism., 
  remained 
  a 
  mere 
  name 
  until 
  

   the 
  description 
  by 
  Bellardi 
  in 
  1872, 
  I 
  have 
  not 
  thought 
  it 
  necessary 
  

   to 
  rename 
  this 
  species. 
  

  

  Very 
  young 
  specimens 
  are 
  also 
  in 
  the 
  Museum 
  as 
  from 
  Station 
  62, 
  

   but 
  I 
  cannot 
  confirm 
  this 
  locality, 
  the 
  depth 
  given 
  being 
  erroneous. 
  

  

  Distinct 
  from 
  the 
  present 
  species, 
  but 
  identical 
  Avith 
  one 
  another, 
  

   are, 
  I 
  think, 
  Fusus 
  Spitzbergensis, 
  live., 
  and 
  F. 
  terebralis, 
  Gould. 
  

  

  Neptunea 
  (Sipho) 
  peetenuis, 
  n.sp. 
  

  

  Shell 
  elongately 
  fusiform, 
  thin, 
  fragile, 
  very 
  pale 
  yellowish-white; 
  

   whorls 
  7, 
  ratiier 
  convex, 
  moderately 
  increasing; 
  protoconch 
  smooth, 
  

   on 
  the 
  second 
  whorl 
  very 
  numerous 
  fine 
  spirals 
  appear, 
  being 
  crossed 
  

   up 
  to 
  the 
  fifth 
  whorl 
  by 
  obsolete 
  longitudinal 
  riblets, 
  these 
  latter 
  

   gradually 
  fade 
  out 
  and 
  the 
  last 
  whorl 
  is 
  sculptured 
  only 
  by 
  the 
  densely 
  

   set, 
  irregular 
  spirals 
  ; 
  mouth 
  drawn 
  out, 
  the 
  canal 
  being 
  moderately 
  

   long 
  and 
  rather 
  Avidely 
  open. 
  Alt. 
  27"5, 
  diam. 
  10 
  mm. 
  

  

  "Porcupine" 
  Expedition, 
  1869, 
  Station 
  51 
  (one 
  live 
  specimen); 
  

   also 
  a 
  variety 
  (one 
  specimen) 
  from 
  Station 
  65. 
  

  

  