﻿NO. 
  1950. 
  CRUSTACEAN 
  PARASITES 
  OF 
  FISH 
  AND 
  CRABS— 
  WILSON. 
  221 
  

  

  to 
  be 
  obtained 
  in 
  the 
  future. 
  These 
  are 
  L. 
  dissimulatus 
  Wilson, 
  

   obtained 
  from 
  the 
  red 
  grouper, 
  EpinepJielus 
  morio, 
  at 
  the 
  Bermuda 
  

   Islands 
  by 
  Dr. 
  Edwin 
  Linton 
  in 
  1903,^ 
  and 
  L. 
  longispinosus 
  Wilson, 
  

   found 
  on 
  the 
  gills 
  of 
  the 
  hammer-head 
  shark 
  at 
  Beaufort, 
  North 
  

   Carolina, 
  in 
  1905.^ 
  

  

  DENTIGRYPS, 
  new 
  genus. 
  

  

  General 
  body 
  form 
  combining 
  the 
  cephalothorax 
  of 
  LepeopTithei- 
  

   rus, 
  an 
  entirely 
  concealed 
  fourth 
  segment, 
  the 
  genital 
  segment 
  of 
  

   Glcnopotes, 
  and 
  a 
  peculiar 
  abdomen 
  somewhat 
  like 
  that 
  of 
  Alebion. 
  

   First 
  three 
  thorax 
  segments 
  fused 
  with 
  the 
  head, 
  forming 
  a 
  carapace 
  

   whose 
  frontal 
  plates, 
  grooves, 
  and 
  areas 
  are 
  just 
  like 
  those 
  of 
  Caligus 
  

   and 
  LepeopJitheirus. 
  Fourth 
  and 
  fifth 
  segments 
  fused 
  with 
  the 
  geni- 
  

   tal 
  segment 
  and 
  the 
  three 
  entirely 
  covered 
  by 
  a 
  single 
  dorsal 
  plate. 
  

   Attached 
  to 
  the 
  ventral 
  surface 
  of 
  the 
  genital 
  segment, 
  in 
  front 
  of 
  

   each 
  posterior 
  corner, 
  is 
  a 
  long 
  conical 
  tooth 
  or 
  prong, 
  similar 
  to 
  those 
  

   on 
  Gloiopotes, 
  but 
  destitute 
  of 
  spines 
  or 
  setae. 
  

  

  Abdomen 
  attached 
  to 
  the 
  ventral 
  surface 
  of 
  the 
  genital 
  segment 
  

   some 
  distance 
  in 
  front 
  of 
  the 
  posterior 
  margin. 
  Egg-tubes 
  of 
  medium 
  

   length 
  and 
  like 
  those 
  of 
  Caligus. 
  Maxillary 
  hooks 
  and 
  furca 
  both 
  

   present 
  ; 
  first 
  maxillsB 
  simple 
  and 
  undivided 
  and 
  some 
  distance 
  behind 
  

   the 
  mouth 
  tube. 
  First 
  and 
  fourth 
  legs 
  uniramose, 
  second 
  and 
  third 
  

   biramose, 
  and 
  all 
  similar 
  to 
  those 
  of 
  Caligus. 
  

  

  Type-species. 
  — 
  D. 
  curtus, 
  new 
  species. 
  

  

  {Dentigryps, 
  dens, 
  a 
  prong 
  or 
  tooth, 
  and 
  gryps, 
  a 
  griffin.) 
  

  

  The 
  griffin 
  was 
  a 
  fabulous 
  animal, 
  half 
  eagle 
  and 
  half 
  lion, 
  and 
  

   thus 
  becomes 
  a 
  fitting 
  name 
  for 
  this 
  new 
  genus 
  which 
  unites 
  the 
  typi- 
  

   cal 
  characters 
  of 
  quite 
  different 
  genera. 
  It 
  has 
  the 
  carapace 
  and 
  all 
  

   the 
  appendages 
  of 
  LepeopJitheirus 
  except 
  the 
  first 
  maxiUas, 
  which 
  here 
  

   are 
  simple 
  and 
  undivided. 
  But 
  there 
  is 
  no 
  free 
  segment, 
  and 
  the 
  

   fused 
  fourth, 
  fifth, 
  and 
  genital 
  segments 
  are 
  covered 
  with 
  a 
  plate 
  

   similar 
  to 
  the 
  carapace, 
  the 
  only 
  thorax 
  joint 
  capable 
  of 
  motion 
  

   being 
  the 
  one 
  between 
  the 
  third 
  and 
  fourth 
  segments 
  where 
  these 
  

   two 
  dorsal 
  plates 
  come 
  together. 
  A 
  similar 
  condition 
  prevails 
  in 
  the 
  

   genus 
  Homoiotes.^ 
  

  

  The 
  ventral 
  prongs 
  or 
  processes 
  on 
  the 
  genital 
  segment 
  are 
  one 
  of 
  

   the 
  typical 
  characters 
  of 
  the 
  genus 
  Gloiopotes, 
  but 
  here 
  they 
  lack 
  the 
  

   spines 
  and 
  setae 
  so 
  commonly 
  found 
  in 
  that 
  genus. 
  

  

  The 
  dropping 
  of 
  the 
  abdomen 
  to 
  the 
  ventral 
  surface 
  and 
  its 
  trans- 
  

   ference 
  forward 
  is 
  typical 
  of 
  the 
  subfamily 
  Pandarinae, 
  while 
  the 
  

   posterior 
  lobes 
  on 
  either 
  side 
  of 
  the 
  anal 
  laminae 
  are 
  characteristic 
  of 
  

   such 
  genera 
  as 
  Alebion. 
  

  

  1 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  28, 
  p. 
  631. 
  

   2Idem, 
  vol. 
  33, 
  p. 
  C04. 
  

   » 
  Idem, 
  vol. 
  28, 
  p. 
  661. 
  

  

  