﻿220 
  rnOCEEDI^aF! 
  of 
  the 
  XATTOXAL 
  museum. 
  vol.44. 
  

  

  and 
  stout, 
  the 
  basal 
  portion 
  nearly 
  rectangular, 
  the 
  rami 
  broad, 
  

   slightly 
  divergent, 
  of 
  the 
  same 
  length 
  as 
  the 
  basal 
  portion, 
  and 
  

   bluntly 
  rounded. 
  

  

  First 
  and 
  second 
  swimming 
  legs 
  of 
  the 
  usual 
  pattern; 
  rami 
  of 
  

   the 
  third 
  pair 
  small 
  and 
  well 
  separated, 
  but 
  rendered 
  prominent 
  by 
  

   the 
  wide 
  gap 
  between 
  the 
  posterior 
  lobes 
  of 
  the 
  carapace 
  and 
  the 
  

   genital 
  segment. 
  Fourth 
  legs 
  reaching 
  a 
  little 
  bej'-ond 
  the 
  center 
  

   of 
  the 
  genital 
  segment, 
  the 
  basal 
  joint 
  as 
  long 
  as 
  the 
  three 
  terminal 
  

   joints; 
  the 
  latter 
  with 
  five 
  spines, 
  all 
  the 
  same 
  size 
  except 
  the 
  middle 
  

   terminal 
  one, 
  which 
  is 
  twice 
  the 
  length 
  of 
  the 
  others. 
  

  

  Color 
  yellowish-white, 
  covered 
  on 
  the 
  dorsal 
  surface 
  witli 
  sparsely 
  

   scattered 
  circular 
  spots 
  of 
  brown 
  pigment. 
  

  

  Total 
  length, 
  2.35 
  mm. 
  Carapace, 
  1.25 
  mm. 
  long, 
  1.05 
  mm. 
  wide. 
  

   Genital 
  segment, 
  0.75 
  mm. 
  long, 
  0.63 
  mm. 
  wide. 
  Abdomen, 
  0.2 
  mm. 
  

   long, 
  0.15 
  mm. 
  wide. 
  

  

  {sufuscus, 
  sub 
  and 
  fuscus, 
  somewhat 
  browTiish 
  or 
  dusky, 
  alluding 
  

   to 
  the 
  spots 
  on 
  the 
  dorsal 
  surface.) 
  

  

  In 
  its 
  general 
  proportions 
  this 
  species 
  resembles 
  C. 
  ahhreviatus 
  

   Kr0yer, 
  but 
  the 
  lunules 
  and 
  first 
  antennae 
  are 
  proportionally 
  much 
  

   longer, 
  the 
  carapace 
  is 
  not 
  contracted 
  anteriorly, 
  the 
  median 
  lobe 
  

   projects 
  far 
  behind 
  the 
  lateral 
  lobes, 
  the 
  genital 
  segment 
  is 
  one- 
  

   fourth 
  longer 
  than 
  wide, 
  instead 
  of 
  one-half 
  wider 
  than 
  long, 
  and 
  the 
  

   abdomen 
  projects 
  for 
  its 
  entire 
  length 
  behind 
  the 
  genital 
  segment. 
  

   These 
  characters, 
  together 
  with 
  many 
  differences 
  in 
  the 
  appendages, 
  

   are 
  sufficient 
  to 
  distinguish 
  the 
  species 
  and 
  establish 
  its 
  validity. 
  

  

  CALIGUS 
  MONACANTm 
  Kpfyer. 
  

  

  Caligus 
  monacanthi 
  Kr0yer, 
  1863, 
  p. 
  59, 
  pi. 
  3, 
  fig. 
  2a-e. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Kr0yer 
  obtained 
  a 
  single 
  male, 
  

   which 
  he 
  referred 
  to 
  this 
  species, 
  from 
  the 
  skin 
  of 
  a 
  Monacanthus 
  

   (probably 
  M. 
  Mspidus, 
  the 
  file 
  fish) 
  in 
  the 
  West 
  Indies. 
  

  

  The 
  present 
  author 
  has 
  given 
  elsewhere 
  ^ 
  reasons 
  for 
  believing 
  that 
  

   this 
  was 
  really 
  a 
  young 
  female 
  C. 
  productus. 
  It 
  is 
  impossible 
  to 
  be 
  

   absolutely 
  certain 
  without 
  further 
  material, 
  and 
  so 
  the 
  record 
  is 
  

   here 
  repeated. 
  

  

  LEPEOPHTHEIRUS 
  COSSYPHl 
  Kr(«yer. 
  

   Lepeophtheirus 
  cossyphi 
  Kr0yer, 
  1863, 
  p. 
  115, 
  pi. 
  7, 
  fig. 
  Ga-e. 
  

   Host 
  and 
  record 
  of 
  specimens. 
  — 
  A 
  single 
  female 
  was 
  taken 
  by 
  

   Kr0yer 
  from 
  the 
  gills 
  of 
  " 
  CossypJius 
  hodjanus" 
  (the 
  Spanish 
  lady 
  

   fish, 
  Harpe 
  7-ufa) 
  in 
  the 
  West 
  Indies, 
  but 
  this 
  single 
  specimen 
  pre- 
  

   sents 
  sufficient 
  distinguishing 
  characters 
  to 
  estabhsh 
  the 
  validity 
  of 
  

   the 
  species. 
  

  

  Two 
  other 
  species 
  of 
  LepeopTiiheirus 
  have 
  been 
  recorded 
  from 
  fish 
  

   that 
  are 
  common 
  in 
  the 
  West 
  Indies, 
  and 
  from 
  which 
  they 
  are 
  likely 
  

  

  1 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  2S, 
  p. 
  607. 
  

  

  