﻿MoUusca 
  fro))i 
  tlie 
  Xurth-west 
  Fulklands. 
  117 
  

  

  Vur. 
  latecosfata, 
  Streb. 
  

  

  Scalaria 
  magellanka, 
  var. 
  latecostata, 
  II. 
  Strebel, 
  Mollusk. 
  der 
  Magal- 
  

   haen-Proviuz, 
  Zool. 
  Jaliib. 
  Baud 
  xxii. 
  Heft 
  ti, 
  Jeua, 
  1905, 
  p. 
  ^oS, 
  

   Taf. 
  xxiii. 
  tig. 
  43 
  a-d, 
  

  

  Eapid 
  Point; 
  at 
  low- 
  water 
  mark. 
  

  

  This 
  is 
  a 
  very 
  elet^ant 
  furin, 
  and 
  presents 
  a 
  very 
  different 
  

   appearance 
  frotn 
  the 
  type, 
  the 
  ribs 
  being, 
  as 
  tlie 
  specilic 
  name 
  

   implies, 
  broader 
  by 
  tar 
  and 
  fewer 
  in 
  number 
  than 
  those 
  ot 
  

   magellanica. 
  It 
  seems 
  to 
  us 
  that, 
  unless 
  intermediates 
  be 
  

   found, 
  it 
  might 
  be 
  considered 
  a 
  true 
  species. 
  

  

  Section 
  {b) 
  T^5;nioglossa. 
  

   Fam. 
  Naticidae. 
  

  

  Natica 
  impervia, 
  Phil. 
  

   Natica 
  impervia, 
  PhiUppi, 
  Archiv 
  fiir 
  Natiirg. 
  i. 
  p. 
  65 
  (1845). 
  

  

  Fine 
  examples, 
  alive, 
  with 
  the 
  smooth 
  calcareous 
  operculum 
  

   attached. 
  They 
  have 
  not 
  been 
  exactly 
  localized, 
  but 
  doubt- 
  

   less 
  occur 
  plentifully 
  in 
  the 
  sandy 
  coves. 
  

  

  Lamellaria 
  ampUij 
  Streb. 
  

  

  Lamellaria 
  ampin, 
  H. 
  Strebel, 
  Molhisk. 
  der 
  Magallinen-Provinz, 
  Zool. 
  

   Jahrb. 
  Band 
  xxiv. 
  Jena, 
  19U6, 
  p. 
  13d, 
  Taf. 
  xi. 
  tig. 
  70 
  a-c. 
  

  

  A 
  single 
  example, 
  puie 
  white, 
  very 
  fragile, 
  and 
  slightly 
  

   broken, 
  but 
  characteristic. 
  

  

  Fam. 
  Calyptraeidge. 
  

  

  Crepidula 
  dilataia, 
  Lamk. 
  

  

  Crepidula 
  dilatatM, 
  Lamarck, 
  Auim. 
  san3 
  Veit. 
  vii. 
  p. 
  644 
  ; 
  Sowerby, 
  

   Tiies. 
  Couch, 
  v. 
  p. 
  Qo, 
  tigs. 
  100, 
  101 
  ; 
  Reeve, 
  Coucli. 
  Icon, 
  xi, 
  p. 
  3. 
  

  

  Rapid 
  Point 
  (March 
  31, 
  1911). 
  

  

  Trockita 
  radians 
  (Lamk.). 
  

  

  Troclius 
  radians, 
  Lamarck, 
  Anim. 
  sans 
  Vert. 
  vii. 
  p. 
  11. 
  

   Calijptrcia 
  radians, 
  Deshayes, 
  Enc. 
  Meth. 
  pi. 
  cxv. 
  tig. 
  3. 
  

   (Jalyptrcea 
  (hifundibulum) 
  radians 
  (Lamarck), 
  Tryon, 
  Man. 
  ConcJi. 
  

   viii. 
  p. 
  121, 
  pi. 
  XXXV. 
  tigs, 
  84-88 
  (1886). 
  

  

  Shallow 
  Bay, 
  at 
  low 
  water. 
  

  

  Tlie 
  synonymy 
  of 
  this 
  species 
  is 
  very 
  extensive, 
  and 
  is 
  

   given 
  to 
  some 
  extent 
  in 
  Tryon's 
  ' 
  Manual.' 
  Of 
  the 
  various 
  

   names 
  employed, 
  corrucjata, 
  Reeve, 
  is 
  probably 
  the 
  most 
  

   familiar 
  next 
  to 
  that 
  actually 
  adopted. 
  

  

  