﻿192 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  abundant 
  and 
  surpass 
  in 
  numbers 
  all 
  the 
  other 
  parasites 
  together. 
  

   They 
  swarm 
  in 
  the 
  eye 
  sockets 
  and 
  the 
  mouth 
  and 
  gill 
  cavities 
  of 
  

   many 
  of 
  the 
  common 
  fish, 
  and 
  are 
  especially 
  abundant 
  upon 
  the 
  

   parrot 
  fish, 
  the 
  grunts, 
  and 
  the 
  snappers. 
  Other 
  species 
  are 
  found 
  

   living 
  as 
  commensals 
  witliin 
  the 
  bodies 
  of 
  ascidians, 
  sponges, 
  and 
  

   the 
  like. 
  

  

  A 
  large 
  number 
  of 
  specimens 
  were 
  obtained 
  from 
  these 
  various 
  

   hosts 
  and 
  were 
  sent 
  to 
  the 
  United 
  States 
  National 
  Museum 
  for 
  identi- 
  

   fication 
  and 
  study. 
  ^ 
  

  

  PARASITIC 
  COPEPODS. 
  

  

  As 
  has 
  just 
  been 
  stated 
  with 
  reference 
  to 
  the 
  isopods, 
  it 
  was 
  found 
  

   that 
  a 
  careful 
  examination 
  of 
  any 
  large 
  fish 
  would 
  usually 
  yield 
  

   copepod 
  parasites. 
  But 
  while 
  there 
  was 
  an 
  abundance 
  of 
  the 
  isopods 
  

   there 
  would 
  be 
  only 
  one 
  or 
  two, 
  or 
  at 
  most 
  a 
  very 
  few, 
  copepods. 
  

   And 
  even 
  large 
  catches 
  of 
  fish 
  were 
  always 
  disappointing 
  in 
  the 
  num- 
  

   ber 
  of 
  copepods 
  obtained 
  from 
  them. 
  The 
  result 
  has 
  been 
  a 
  collec- 
  

   tion 
  of 
  copepod 
  parasites, 
  very 
  meager 
  in 
  the 
  number 
  of 
  spechuens, 
  

   but 
  comparatively 
  rich 
  in 
  the 
  number 
  of 
  species. 
  

  

  In 
  the 
  following 
  list 
  an 
  effort 
  has 
  been 
  made 
  to 
  include 
  all 
  the 
  

   copepods 
  previously 
  reported 
  from 
  West 
  Indian 
  fish 
  along 
  with 
  those 
  

   found 
  during 
  the 
  present 
  investigations. 
  

  

  Nearly 
  all 
  of 
  these 
  published 
  species 
  are 
  included 
  m 
  two 
  papers, 
  

   both 
  of 
  which 
  are 
  confined, 
  so 
  far 
  as 
  the 
  West 
  Indies 
  are 
  concerned, 
  

   to 
  the 
  Danish 
  islands 
  in 
  the 
  group 
  of 
  Lesser 
  Antilles. 
  

  

  The 
  first 
  paper 
  ^ 
  was 
  written 
  by 
  Steenstrup 
  and 
  Liitken 
  and 
  pub- 
  

   lished 
  in 
  1861, 
  and 
  the 
  second 
  by 
  Kr0yer,^ 
  published 
  in 
  1863. 
  

  

  Many 
  of 
  the 
  species 
  which 
  they 
  reported 
  were 
  obtained 
  from 
  pre- 
  

   served 
  specimens 
  of 
  Danish 
  West 
  Indian 
  fish 
  in 
  the 
  Vienna 
  Museum 
  

   while 
  others 
  were 
  brought 
  home 
  by 
  the 
  captains 
  of 
  various 
  vessels 
  

   which 
  had 
  cruised 
  in 
  that 
  portion 
  of 
  the 
  Atlantic. 
  

  

  So 
  far 
  as 
  can 
  be 
  ascertamed 
  not 
  a 
  single 
  species 
  has 
  hitherto 
  been 
  

   described 
  from 
  living 
  material. 
  

  

  The 
  present 
  report 
  is 
  the 
  exact 
  antithesis 
  of 
  this, 
  for 
  every 
  new 
  

   species 
  here 
  presented 
  has 
  been 
  described, 
  and 
  the 
  drawings 
  have 
  been 
  

   made, 
  from 
  living 
  specimens 
  before 
  preservation, 
  and 
  in 
  addition 
  

   some 
  of 
  the 
  Danish 
  species, 
  published 
  in 
  the 
  two 
  papers 
  above 
  men- 
  

   tioned, 
  were 
  obtained 
  alive 
  from 
  Jamaican 
  fish, 
  and 
  upon 
  them 
  were 
  

   verified 
  the 
  original 
  specific 
  descriptions. 
  In 
  all 
  there 
  are 
  here 
  in- 
  

   cluded 
  52 
  species, 
  of 
  which 
  21 
  have 
  been 
  previously 
  described, 
  while 
  

   31 
  are 
  new 
  to 
  science. 
  

  

  > 
  See 
  Richardson, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  42, 
  No. 
  1894, 
  April 
  5, 
  1912, 
  pp. 
  187-192. 
  

   « 
  Kong. 
  Danske 
  Vid. 
  Selsk. 
  Skrivt., 
  5tc. 
  Raekke, 
  p. 
  343. 
  

   sNaturh. 
  Tidsskr., 
  3die. 
  Raekke, 
  p. 
  75. 
  

  

  