﻿Mollusca 
  frum 
  the 
  North-ioest 
  Falklands. 
  113 
  

  

  Callochiton 
  ilium 
  inatus 
  (Reeve). 
  

  

  Chiton 
  illuminatus, 
  Reeve, 
  Conch. 
  Icon. 
  pi. 
  xxii. 
  fig. 
  147 
  (1847). 
  

   Chiton 
  {Callochiton) 
  illuminatus, 
  Smith, 
  P. 
  Z. 
  S. 
  p. 
  35 
  (1881). 
  

  

  This 
  species 
  seems 
  very 
  generally 
  distributed 
  over 
  the 
  

   area. 
  

  

  Plaxiphora 
  carmichaelis 
  (Wood). 
  

  

  Chiton 
  carmichaelis, 
  Wood, 
  Suppl. 
  Ind. 
  Test. 
  pi. 
  i. 
  fig. 
  10 
  (1828) 
  ; 
  

  

  Gray, 
  Spicil. 
  Zool. 
  pi. 
  i. 
  fig. 
  6 
  (1828). 
  

   Chiton 
  setiffei; 
  King, 
  Zool. 
  Joiirn. 
  v. 
  p. 
  3o8 
  (1832) 
  ; 
  So^verby, 
  Conch. 
  

  

  Illustr. 
  p. 
  17 
  ; 
  Zool. 
  Beechey's 
  Voyage, 
  pi, 
  xl. 
  fig. 
  7. 
  

  

  Not 
  uncouimoii, 
  but 
  only 
  small 
  examples 
  forwarded. 
  

  

  Order 
  PROSOBRANCHIATA. 
  

   Suborder 
  DiOTOCARDlA. 
  

   (a) 
  DOCOGLOSSA. 
  

   Fam. 
  AcmsBidae. 
  

  

  Acmcea 
  ceciliana, 
  D'Orb, 
  

  

  Acmcca 
  ceciliana, 
  D'Orb. 
  Voy. 
  Am6r. 
  M^rid. 
  p. 
  482, 
  tab. 
  Ixxxi. 
  

   figs. 
  4-6; 
  Gay, 
  Hist, 
  de 
  Chile, 
  Tiii. 
  p. 
  260 
  (1854); 
  Tryon, 
  Man. 
  

   Conch, 
  xiii. 
  p. 
  33, 
  pi. 
  xxxiv. 
  figs. 
  14-21. 
  

  

  Var. 
  magellamca, 
  Strebel. 
  

  

  Acmcea 
  ceciliana, 
  var. 
  magellanica, 
  H. 
  Strebel, 
  Molhisk. 
  der 
  Magalhaen- 
  

   Provinz, 
  Zool. 
  Jahrb. 
  xxii. 
  Band, 
  Heft 
  i,, 
  Jena 
  (1907). 
  

  

  Dip 
  Creek, 
  Roy 
  Cove, 
  at 
  low 
  tide, 
  and 
  also 
  occasionally 
  at 
  

   high-water 
  mark. 
  One 
  from 
  the 
  latter 
  locality 
  seems 
  to 
  be 
  

   of 
  the 
  variety 
  magellanica. 
  This 
  is 
  a 
  commou 
  moUusk 
  

   throughout 
  the 
  Falkland 
  group. 
  

  

  Scurria 
  scurra 
  (Lesson). 
  

  

  Patella 
  scurra, 
  Lesson, 
  Voyage 
  de 
  la 
  * 
  Coquille,' 
  1826-30. 
  

  

  Scurria 
  scurra 
  (Gray), 
  Tryon, 
  Man. 
  Conch, 
  xiii. 
  pi. 
  xxxix. 
  figs. 
  26, 
  27. 
  

  

  " 
  Roy 
  Cove 
  : 
  found 
  dead 
  on 
  the 
  shore 
  at 
  low 
  water. 
  Port 
  

   Egremont 
  : 
  very 
  large 
  examples 
  on 
  the 
  south 
  shore 
  after 
  a 
  

   northerly 
  gale; 
  they 
  were 
  cast 
  up 
  alive, 
  but 
  birds 
  soon 
  

   extracted 
  the 
  animal." 
  — 
  R. 
  V. 
  

  

  These 
  latter 
  are 
  in 
  fine 
  condition, 
  pale 
  brown, 
  very 
  smooth, 
  

   and 
  irregularly 
  marked 
  longitudinally 
  with 
  zigzag 
  lines, 
  

   becoming 
  evanescent 
  above 
  the 
  margin. 
  Within, 
  the 
  surface 
  

   is 
  pure 
  white. 
  This 
  species 
  has 
  a 
  large 
  synonymy, 
  it 
  being 
  

   the 
  Acmcea 
  scurra, 
  D'Orb., 
  Lottia 
  pallida, 
  Sowb., 
  L. 
  coni'ca, 
  

   Gould, 
  and 
  Acmcea 
  ct/mbiila, 
  Hup^. 
  

  

  Ann. 
  (b 
  J\fa(/. 
  N. 
  Hist, 
  fc^er. 
  8. 
  VvL 
  xiii. 
  8 
  

  

  