﻿Bibliographical 
  Notice. 
  437 
  

  

  March 
  1888, 
  M. 
  E. 
  Canu's 
  paper 
  on 
  the 
  free 
  marine 
  Copepoda 
  of 
  

   the 
  Boulonnais, 
  not 
  yet 
  completed 
  ^see 
  ' 
  Annals 
  ' 
  for 
  September 
  1888 
  

   and 
  January 
  1889), 
  and 
  M. 
  Bonnier's 
  important 
  memoir 
  on 
  the 
  

   Galatheidae 
  of 
  the 
  French 
  coasts 
  (' 
  Annals,' 
  July 
  1888). 
  

  

  Of 
  systematic 
  articles 
  of 
  a 
  more 
  purely 
  descriptive 
  nature 
  atten- 
  

   tion 
  may 
  be 
  called 
  particularly 
  to 
  a 
  most 
  valuable 
  contribution 
  by 
  

   M. 
  E. 
  L. 
  Trouessart 
  and 
  M. 
  G. 
  Neumann 
  upon 
  the 
  plumicolous 
  

   Sarcoptidse, 
  issued 
  in 
  continuation 
  of 
  a 
  paper 
  published 
  in 
  18815 
  in 
  

   the 
  'Bulletin 
  de 
  la 
  Societe 
  d'etudes 
  seientifiques 
  d'Angers.' 
  In 
  this 
  

   paper, 
  which 
  occupies 
  fifty-six 
  pages 
  and 
  is 
  illustrated 
  with 
  six 
  

   plates, 
  M. 
  Trouessart 
  describes 
  a 
  great 
  number 
  of 
  those 
  curious 
  

   parasitic 
  mites 
  which 
  inhabit 
  the 
  plumage 
  of 
  birds 
  — 
  objects 
  small 
  

   and 
  apparently 
  contemptible 
  in 
  themselves, 
  but 
  presenting 
  the 
  most 
  

   singular 
  varieties 
  of 
  adaptive 
  structure. 
  

  

  M. 
  Be'tencourt's 
  list 
  of 
  the 
  hydroid 
  polyps 
  of 
  the 
  Pas 
  de 
  Calais, 
  

   although 
  only 
  a 
  list 
  with 
  remarks 
  upon 
  the 
  mode 
  of 
  occurrence 
  &c. 
  of 
  

   the 
  species, 
  is 
  a 
  valuable 
  contribution 
  to 
  our 
  knowledge, 
  and 
  will 
  be 
  

   particularly 
  interesting 
  to 
  British 
  naturalists 
  ; 
  and 
  the 
  same 
  observa- 
  

   tions 
  apply 
  to 
  Dr. 
  Sauvage's 
  " 
  Catalogue 
  of 
  the 
  Fishes 
  of 
  the 
  Coast 
  

   of 
  the 
  Boulonnais," 
  reprinted 
  from 
  the 
  ' 
  Bulletin 
  de 
  la 
  Societe 
  

   Zoologique 
  de 
  France,' 
  but 
  supplemented 
  with 
  numerous 
  notes 
  by 
  

   M. 
  Giard. 
  In 
  like 
  manner 
  M. 
  Giard's 
  notice 
  of 
  the 
  faunistic 
  work 
  

   done 
  during 
  the 
  year 
  1888 
  at 
  the 
  Laboratory 
  of 
  Wimereux 
  contains 
  

   a 
  quantity 
  of 
  interesting 
  matter 
  in 
  connexion 
  with 
  the 
  distribution 
  

   and 
  mode 
  of 
  occurrence 
  of 
  numerous 
  species 
  of 
  animals, 
  including 
  

   many 
  which 
  are 
  of 
  interest 
  to 
  us 
  as 
  inhabitants 
  of 
  our 
  own 
  

   coasts. 
  

  

  M. 
  Giard's 
  article 
  on 
  Parasitic 
  Castration 
  contains 
  some 
  new 
  

   points 
  observed 
  by 
  himself, 
  and, 
  further, 
  a 
  discussion 
  of 
  the 
  obser- 
  

   vations 
  of 
  Mr. 
  Fewkes 
  on 
  the 
  castration 
  of 
  Amphiura 
  squamata 
  by 
  

   a 
  Copepod 
  Crustacean 
  parasite. 
  M. 
  Giard 
  notices 
  further 
  the 
  cas- 
  

   tration 
  of 
  this 
  species 
  at 
  Wimereux 
  by 
  Orthonectida 
  ; 
  and 
  he 
  con- 
  

   cludes 
  his 
  article 
  with 
  a 
  series 
  of 
  numbered 
  "theses," 
  giving 
  an 
  

   aphoristic 
  definition 
  of 
  the 
  phenomena 
  included 
  under 
  the 
  term 
  

   " 
  parasitic 
  castration." 
  We 
  find 
  further 
  notices 
  upon 
  this 
  and 
  

   other 
  matters 
  of 
  biological 
  interest, 
  both 
  zoological 
  and 
  botanical, 
  

   in 
  the 
  articles 
  contributed 
  by 
  M. 
  Giard 
  under 
  the 
  title 
  of 
  " 
  Frag- 
  

   ments 
  biologiques." 
  Two 
  or 
  three 
  extracted 
  and 
  translated 
  articles 
  

   are 
  also 
  of 
  much 
  interest 
  from 
  the 
  point 
  of 
  view 
  of 
  general 
  biology. 
  

   Among 
  these 
  we 
  may 
  notice 
  translations 
  of 
  papers 
  by 
  MM. 
  Weis- 
  

   mann 
  and 
  Ischikawa 
  on 
  partial 
  fecundation, 
  one 
  by 
  M. 
  Huth 
  on 
  

   developmental 
  convergence 
  in 
  the 
  animal 
  and 
  vegetable 
  kingdoms, 
  

   and 
  an 
  abstract 
  by 
  M. 
  Giard 
  of 
  a 
  memoir 
  by 
  M. 
  Maurice 
  Hovelacque 
  

   on 
  the 
  vegetative 
  apparatus 
  of 
  the 
  Bignoniaceae, 
  Rhinanthacese, 
  

   Orobanchece, 
  and 
  Utricularieee, 
  furnishing 
  a 
  very 
  remarkable 
  indi- 
  

   cation 
  of 
  the 
  singular 
  adaptations 
  which 
  the 
  members 
  of 
  a 
  group 
  

   may 
  undergo 
  to 
  suit 
  them 
  to 
  very 
  different 
  conditions 
  of 
  existence. 
  

  

  A 
  very 
  curious 
  paper 
  from 
  a 
  Russian 
  source 
  is 
  that 
  by 
  M. 
  J. 
  

   Krassilstchik 
  on 
  " 
  The 
  industrial 
  production 
  of 
  vegetable 
  parasites 
  

   for 
  the 
  destruction 
  of 
  injurious 
  insects." 
  In 
  this 
  the 
  author 
  notices 
  

  

  Ann. 
  & 
  Mag. 
  X. 
  Hist. 
  Ser. 
  6. 
  Vol 
  iii. 
  30 
  

  

  