﻿208 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  toi>. 
  44. 
  

  

  Family 
  CALIGID7E. 
  

  

  CALIGUS 
  PRODUCTUS 
  Dana. 
  

   Caligus 
  productus 
  Dana, 
  1854, 
  p. 
  1354, 
  pi. 
  94, 
  fig. 
  4. 
  

  

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

   by 
  Dana 
  from 
  specimens 
  obtained 
  from 
  the 
  common 
  dolphin, 
  Cory- 
  

   j)hde7ia 
  hippurus, 
  and 
  from 
  trigger 
  fishes, 
  Batistes, 
  in 
  the 
  West 
  Indies. 
  

   It 
  was 
  afterward 
  noted 
  by 
  Stcenstrup 
  and 
  Liitken 
  (1861, 
  p. 
  357) 
  as 
  

   taken 
  from 
  the 
  inside 
  of 
  the 
  operculum 
  of 
  the 
  barracuda, 
  Spliyrsena 
  

   harracuda, 
  and 
  by 
  Kr0yer 
  (1863, 
  p. 
  64) 
  as 
  found 
  on 
  the 
  same 
  Cory- 
  

   phsena 
  as 
  Dana's 
  specimens. 
  In 
  both 
  of 
  these 
  instances 
  the 
  locality 
  

   given 
  was 
  the 
  Danish 
  West 
  Indies. 
  

  

  CALIGUS 
  BALIST^ 
  Steenstrup 
  and 
  Ltitken. 
  

   Caligus 
  balistse 
  Steenstrup 
  and 
  Lutken, 
  1861, 
  p. 
  356, 
  pi. 
  1, 
  fig. 
  1. 
  

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

   from 
  the 
  mouth 
  and 
  fins 
  of 
  a 
  West 
  Indian 
  Batistes, 
  probably 
  B. 
  vetuta, 
  

   and 
  included 
  both 
  sexes. 
  It 
  has 
  not 
  been 
  found 
  by 
  any 
  subsequent 
  

   investigators. 
  

  

  CALIGUS 
  ISONYX 
  Steenstru? 
  and 
  Lutken. 
  

   Caligus 
  isonyx 
  Steenstrup 
  and 
  Lutken, 
  1861, 
  p. 
  358, 
  pi. 
  3, 
  fig. 
  5. 
  

   Host 
  and 
  record 
  of 
  specimens.— 
  This 
  species 
  is 
  based 
  on 
  a 
  single 
  

   female 
  taken 
  from 
  the 
  gills 
  of 
  a 
  great 
  barracuda, 
  SpJiyrsena 
  barracuda, 
  

   in 
  the 
  West 
  Indies. 
  No 
  other 
  specimen 
  has 
  ever 
  been 
  obtained. 
  

  

  CALIGUS 
  H.EMULONIS 
  Kr^yer. 
  

  

  Caligus 
  hxmulonis 
  Kr0yer, 
  1863, 
  p. 
  48, 
  pi. 
  4, 
  fig. 
  3a-d. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Three 
  specimens, 
  two 
  females 
  and 
  

   a 
  male, 
  of 
  this 
  species 
  were 
  taken 
  from 
  the 
  gills 
  of 
  the 
  yellow 
  

   grunt, 
  Hsemuton 
  sciurus 
  (H. 
  etegans 
  Cuvier), 
  in 
  the 
  Danish 
  West 
  

   Indies. 
  No 
  other 
  specimens 
  have 
  ever 
  been 
  obtained^ 
  

  

  CALIGUS 
  TENAX 
  Heller. 
  

   Plate 
  26; 
  plate 
  29, 
  figs. 
  99-101. 
  

   Caligus 
  tenax 
  Heller, 
  1865, 
  p. 
  172, 
  pi. 
  15, 
  fig. 
  3. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  The 
  original 
  type-specimens 
  were 
  

   obtained 
  from 
  the 
  gills 
  of 
  the 
  horse 
  crevalle, 
  Caranx 
  hippos 
  (C. 
  caravr- 
  

   gus 
  of 
  Heller), 
  in 
  Brazil. 
  These 
  included 
  females 
  only. 
  Later 
  (1898) 
  

   Bassett-Smith 
  reported 
  both 
  sexes 
  from 
  various 
  species 
  of 
  Caranx 
  in 
  

   the 
  Indian 
  Ocean. 
  Both 
  sexes 
  were 
  also 
  obtained 
  from 
  the 
  gills 
  of 
  

   Caranx 
  crysos 
  July 
  12, 
  and 
  from 
  Caranx 
  liippos 
  July 
  29, 
  1910, 
  and 
  

   have 
  received 
  Cat. 
  Nos. 
  42301 
  and 
  42341, 
  U.S.N.M. 
  

  

  Femate. 
  — 
  General 
  body 
  form 
  long 
  and 
  stout 
  ; 
  carapace 
  ovate, 
  one- 
  

   sLxth 
  wider 
  than 
  long, 
  strongly 
  contracted 
  anteriorly; 
  frontal 
  plates 
  

   prominent; 
  lunules 
  semicircular, 
  projecting 
  half 
  their 
  width; 
  frontal 
  

  

  