﻿NO. 
  1950. 
  CRUSTACEAN 
  PARASITES 
  OF 
  FISH 
  AND 
  CRABS— 
  WILSON. 
  225 
  

   MIDIAS 
  LOBODES 
  Wilson. 
  

   Midias 
  lohodcs 
  Wilson, 
  1911, 
  p. 
  625, 
  pi. 
  65, 
  figs. 
  1-12. 
  

  

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

   from 
  specimens 
  obtained 
  by 
  Dr. 
  Edwin 
  Linton 
  at 
  the 
  Dry 
  Tortugas, 
  

   Florida, 
  from 
  the 
  outside 
  surface 
  of 
  the 
  head 
  of 
  a 
  great 
  barracuda 
  

   (Sphyrsena 
  barr^acuda). 
  

  

  Shnilar 
  specimens 
  to 
  the 
  number 
  of 
  40, 
  including 
  both 
  sexes, 
  were 
  

   obtained 
  from 
  the 
  same 
  host 
  at 
  Montego 
  Bay, 
  Jamaica. 
  

  

  EURYPHORUS 
  CORYPHiEN^ 
  Kr^yer. 
  

  

  Euryphorus 
  coryphsenx 
  Kr0yer, 
  1863, 
  p. 
  161, 
  pi. 
  10, 
  figs. 
  4a-h. 
  

   Host 
  and 
  record 
  of 
  specimens. 
  — 
  Several 
  specimens 
  were 
  reported 
  by 
  

   Kr0yer 
  from 
  the 
  gills 
  of 
  the 
  common 
  dolphin, 
  CorypTixna 
  liippurus, 
  

   in 
  the 
  tropical 
  Atlantic 
  near 
  the 
  West 
  Indies. 
  This 
  is 
  probably 
  the 
  

   same 
  species 
  as 
  had 
  been 
  named 
  nympha 
  by 
  Steenstrup 
  and 
  Liitken 
  

   in 
  1861, 
  which 
  was 
  taken 
  from 
  a 
  "dolphin" 
  near 
  the 
  West 
  Indies. 
  

  

  PARALEBION 
  CURTICAUDIS, 
  new 
  species. 
  

   Plate 
  34. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Four 
  females 
  were 
  taken 
  from 
  the 
  

   gills 
  of 
  a 
  12-pound 
  red 
  snapper, 
  Neomsenis 
  aya, 
  July 
  2, 
  1910. 
  

  

  Type-specimen.— 
  C2it. 
  No. 
  43601, 
  U.S.N.M. 
  Paratypes, 
  Cat. 
  No. 
  

   42271, 
  U.S.N.M. 
  

  

  Female. 
  — 
  General 
  body 
  form 
  short 
  and 
  plump 
  ; 
  carapace 
  horseshoe- 
  

   shaped, 
  one-fourth 
  wider 
  than 
  long, 
  squarely 
  truncated 
  posteriorly; 
  

   each 
  side 
  of 
  the 
  H 
  grooves 
  has 
  a 
  double 
  curve 
  like 
  the 
  letter 
  S, 
  the 
  

   part 
  posterior 
  to 
  the 
  crossbar 
  -with 
  the 
  concave 
  sides, 
  the 
  anterior 
  

   part 
  \\dth 
  the 
  convex 
  sides, 
  facing 
  each 
  other; 
  this 
  makes 
  the 
  space 
  

   between 
  the 
  sides 
  anteriorly 
  only 
  one-fourth 
  what 
  it 
  is 
  behind 
  the 
  

   crossbar. 
  Posterior 
  lobes 
  wide, 
  their 
  tips 
  curved 
  inward 
  so 
  as 
  -to 
  

   overlap 
  the 
  corners 
  of 
  the 
  median 
  lobe 
  and 
  project 
  slightly 
  behind 
  it; 
  

   lateral 
  areas 
  very 
  wide 
  anteriorly 
  and 
  narrow 
  posteriorly; 
  posterior 
  

   sinuses 
  shallow 
  and 
  oval. 
  

  

  Median 
  lobe 
  with 
  projecting 
  corners 
  and 
  a 
  somewhat 
  reentrant 
  

   posterior 
  margin. 
  Free 
  segment 
  nearly 
  half 
  the 
  length 
  of 
  the 
  cara- 
  

   pace, 
  narrowed 
  anteriorly 
  and 
  posteriorly 
  but 
  projecting 
  strongly 
  at 
  

   the 
  bases 
  of 
  the 
  fourth 
  legs. 
  Genital 
  segment 
  subquadrilateral, 
  as 
  

   wide 
  as 
  long, 
  three-fifths 
  as 
  wide 
  as 
  the 
  carapace, 
  with 
  short 
  and 
  

   broad 
  posterior 
  lobes. 
  

  

  Abdomen 
  one-jointed, 
  half 
  the 
  length 
  and 
  one-third 
  the 
  width 
  of 
  

   the 
  genital 
  segment, 
  with 
  a 
  shallow 
  anal 
  sinus; 
  anal 
  laminae 
  small 
  

   and 
  nearly 
  spherical, 
  each 
  tipped 
  with 
  three 
  long 
  setae 
  and 
  one 
  short 
  

  

  1 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  39, 
  p. 
  626. 
  

   69077°— 
  Proc.N.M.vol.44— 
  13 
  15 
  

  

  