﻿Mollusca 
  from 
  the 
  North-west 
  Falhlands. 
  129 
  

  

  Mytilus 
  magellanicus, 
  Chem. 
  

  

  Mytilus 
  magellanicus, 
  Chem, 
  Conch. 
  Cab. 
  viii. 
  pi. 
  Ixxxiii. 
  fig. 
  742 
  ; 
  

   Keeve, 
  Conch. 
  Icon. 
  x. 
  pi. 
  vi. 
  fig. 
  22. 
  

  

  Roy 
  Cove 
  Creek. 
  

  

  One 
  specimen 
  shows 
  a 
  curious 
  graduated 
  malformation, 
  

   being 
  unusually 
  incrassate 
  in 
  the 
  centre 
  o£ 
  each 
  valve. 
  

  

  Brachyodontes 
  (^Ilormomya) 
  hlnkeanns, 
  sp, 
  n. 
  

   (PI. 
  VII. 
  figs. 
  4, 
  4 
  a.) 
  

  

  B. 
  testa 
  alba, 
  lata, 
  epidermirle 
  sordide 
  brunnea 
  partim 
  induta, 
  ovato- 
  

   triangulari, 
  parva, 
  baud 
  multum 
  tumescente, 
  postice 
  leniter 
  

   rotundata, 
  antice 
  apiid 
  umbones 
  acuminata; 
  mox 
  expansa, 
  super- 
  

   ficie 
  undique 
  radiatim 
  irregulariter 
  filolirata, 
  interstitiis 
  sub 
  lente 
  

   arete 
  spiraliter 
  striatulis 
  ; 
  periostraco 
  imbricate, 
  marginem 
  super- 
  

   impendente, 
  pagina 
  intus 
  alba, 
  marginibus 
  circa 
  crenulatis, 
  septo 
  

   minimo. 
  

  

  Alt. 
  5, 
  lat. 
  8 
  mm. 
  

  

  Roy 
  Cove. 
  

  

  In 
  form, 
  and 
  to 
  some 
  extent 
  in 
  sculpture, 
  like 
  a 
  small 
  

   Br. 
  cubitus, 
  Say, 
  and, 
  with 
  this, 
  we 
  consider 
  it 
  should 
  be 
  

   placed 
  in 
  the 
  subgenus 
  Hormomya, 
  Morch. 
  We 
  would 
  refer 
  

   to 
  an 
  exhaustive 
  paper 
  on 
  the 
  classification 
  of 
  the 
  Mytilidae 
  

   by 
  Mr. 
  A. 
  J. 
  Jukes.Browne, 
  F.R.S.* 
  

  

  At 
  Mr. 
  Vallentin's 
  request 
  we 
  name 
  this 
  shell 
  in 
  honour 
  of 
  

   Mr. 
  Robert 
  Blake, 
  Chairman 
  of 
  the 
  Directors 
  of 
  the 
  Falkland 
  

   Islands 
  Company, 
  who 
  evinced 
  much 
  interest 
  in 
  the 
  scientific 
  

   work 
  and 
  aided 
  it 
  by 
  all 
  means 
  in 
  his 
  power, 
  

  

  Modiolarca 
  exilis, 
  H. 
  & 
  A. 
  Ad, 
  

  

  Modiolarca 
  exilis, 
  H. 
  & 
  A. 
  Adams, 
  P. 
  Z. 
  S. 
  1853, 
  p. 
  435 
  ; 
  E. 
  A. 
  Smith, 
  

   Phil. 
  Trans. 
  Royal 
  Soc. 
  Lond. 
  vol. 
  clxviii. 
  p. 
  190, 
  pi. 
  ix. 
  fig. 
  24 
  (1879). 
  

  

  Fox 
  Bay, 
  after 
  a 
  severe 
  shore-gale, 
  

  

  Modiolarca 
  trapezina 
  (Lam.). 
  

  

  Modiola 
  trapezina, 
  Lamarck, 
  Anim. 
  sans 
  Vert. 
  vol. 
  vii. 
  p. 
  24 
  ; 
  Delessert, 
  

   pi. 
  xiii. 
  tig. 
  7. 
  

  

  Roy 
  Cove, 
  2-4 
  fathoms; 
  Crooked 
  Inlet, 
  at 
  low 
  water, 
  

   widely 
  distributed. 
  

  

  • 
  Proc. 
  Make. 
  Soc. 
  Lond. 
  1905, 
  pp. 
  211-224. 
  

   Ann, 
  dc 
  Mag. 
  N. 
  Hist, 
  ^er. 
  8. 
  Vol. 
  xiii. 
  ^ 
  

  

  