﻿NO. 
  1950. 
  CRUSTACEAN 
  PARASITES 
  OF 
  FISH 
  A 
  ND 
  CRABS— 
  WILSON. 
  251 
  

  

  swim 
  at 
  all. 
  The 
  males 
  can 
  swim 
  readily 
  but 
  die 
  much 
  sooner 
  than 
  

   the 
  females. 
  Many 
  of 
  the 
  egg-strings 
  were 
  ready 
  to 
  hatch 
  and 
  active 
  

   nauplii 
  were 
  obtained, 
  but 
  none 
  of 
  them 
  could 
  be 
  carried 
  through 
  

   even 
  the 
  first 
  molt. 
  In 
  the 
  matured 
  egg-strings 
  they 
  show 
  through 
  

   the 
  walls 
  of 
  the 
  external 
  cases 
  with 
  a 
  peculiar 
  iridescence, 
  totally 
  

   unlike 
  anytliing 
  seen 
  in 
  other 
  copepods, 
  and 
  this 
  has 
  suggested 
  the 
  

   specific 
  name 
  for 
  the 
  new 
  species. 
  

  

  Family 
  LERN^IDiE. 
  

  

  PENNELLA 
  EXOCGETI 
  (Holten). 
  

  

  Lemseopenna 
  hlainvillii 
  Lesueur, 
  1824, 
  p. 
  289, 
  pi. 
  11, 
  figs. 
  2e-k. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  This 
  species 
  was 
  originally 
  described 
  

   by 
  Holten 
  in 
  1802 
  under 
  the 
  name 
  Lemaea 
  exocceti, 
  and 
  was 
  obtained 
  

   from 
  the 
  common 
  flying 
  fish, 
  Exoccetus 
  volitans, 
  in 
  the 
  Atlantic 
  Ocean. 
  

   It 
  was 
  afterwards 
  taken 
  by 
  Lesueur 
  from 
  the 
  same 
  host 
  in 
  the 
  vicinity 
  

   of 
  the 
  West 
  Indies, 
  and 
  described 
  and 
  figured 
  under 
  the 
  name 
  Ler- 
  

   nxopenna 
  hlainvillii. 
  Lesueur 
  found 
  a 
  second 
  specimen, 
  on 
  the 
  same 
  

   fish 
  and 
  close 
  to 
  the 
  one 
  just 
  mentioned, 
  but 
  so 
  different 
  from 
  it 
  that 
  

   he 
  was 
  at 
  a 
  loss 
  just 
  w^here 
  to 
  place 
  it; 
  he 
  suggested 
  that 
  the 
  two 
  

   rftight 
  be 
  different 
  sexes 
  of 
  the 
  same 
  species 
  (1824, 
  p. 
  292). 
  This 
  

   second 
  specimen 
  Mine 
  Edwards 
  made 
  the 
  type 
  species 
  of 
  his 
  new 
  

   genus 
  Lernseonema 
  (1840, 
  p. 
  524), 
  but 
  Richiardi 
  has 
  suggested 
  (1877, 
  

   p. 
  199) 
  with 
  greater 
  probabihty 
  that 
  it 
  is 
  an 
  undeveloped 
  P. 
  exoccsti. 
  

  

  THERODAMAS 
  SERRANI 
  Kr(»yer. 
  

   Therodamas 
  serrani 
  Kr0yer, 
  1863, 
  p. 
  316, 
  pi. 
  15, 
  figs. 
  4a-/. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Kr0yer 
  obtained 
  a 
  tolerably 
  large 
  

   number 
  of 
  females 
  of 
  this 
  Lerneeid 
  from 
  the 
  gills 
  of 
  a 
  Serranus 
  species 
  

   in 
  the 
  Danish 
  West 
  Indies. 
  He 
  established 
  for 
  them 
  (1863, 
  p. 
  316) 
  

   a 
  new 
  genus 
  and 
  species 
  which 
  seem 
  to 
  be 
  well 
  founded, 
  but 
  no 
  

   other 
  investigator 
  has 
  ever 
  obtained 
  any 
  specimens. 
  This 
  is 
  the 
  

   more 
  to 
  be 
  regretted 
  because 
  the 
  parasite 
  is 
  very 
  peculiar 
  in 
  many 
  

   respects, 
  but 
  although 
  all 
  the 
  species 
  of 
  Serranus 
  as 
  well 
  as 
  other 
  

   groupers 
  were 
  carefully 
  examined, 
  nothing 
  of 
  the 
  sort 
  could 
  be 
  

   found 
  at 
  Jamaica. 
  

  

  LERNiEOLOPHUS 
  HEMIRAMPm 
  (Kr^yer). 
  

   Lemsea 
  hemirampM 
  Kr0yer, 
  1863, 
  p. 
  318, 
  pi. 
  15, 
  figs. 
  7a-/. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  ^A 
  single 
  specimen 
  of 
  this 
  species 
  

   was 
  obtained 
  from 
  the 
  mouth 
  opening 
  of 
  a 
  Hemiramphus, 
  species, 
  

   probably 
  H. 
  hrasiliensis, 
  from 
  the 
  Danish 
  West 
  Indies. 
  Upon 
  this 
  

   specimen 
  Kr0yer 
  established 
  his 
  new 
  species 
  (1863, 
  p. 
  318), 
  and 
  so 
  

   far 
  as 
  can 
  be 
  judged 
  it 
  seems 
  perfectly 
  valid. 
  

  

  