﻿CRUSTACEAN 
  PARASITES 
  OF 
  WEST 
  INDIAN 
  FISHES 
  AND 
  

   LAND 
  CRABS, 
  WITH 
  DESCRIPTIONS 
  OF 
  NEW 
  GENERA 
  

   AND 
  SPECIES. 
  

  

  By 
  Charles 
  Branch 
  Wilson, 
  

  

  Department 
  of 
  Biology, 
  State 
  Normal 
  School, 
  Westfield, 
  Massachusetts. 
  

  

  INTRODUCTORY. 
  

  

  During 
  the 
  summer 
  of 
  1910 
  the 
  author 
  enjoyed 
  the 
  privilege 
  of 
  

   spending 
  three 
  months 
  at 
  the 
  biological 
  laboratory 
  of 
  Johns 
  Hopkins 
  

   University 
  at 
  Montego 
  Bay, 
  Jamaica. 
  

  

  As 
  a 
  part 
  of 
  the 
  work 
  there 
  accompUshed 
  about 
  100 
  species 
  of 
  fish,' 
  

   including 
  many 
  hundreds 
  of 
  specimens, 
  were 
  examined 
  for 
  parasitic 
  

   copepods, 
  isopods, 
  and 
  other 
  parasites 
  that 
  might 
  be 
  of 
  peculiar 
  

   interest. 
  

  

  Many 
  of 
  the 
  larger 
  Crustacea, 
  and 
  in 
  particular 
  the 
  land 
  crabs, 
  were 
  

   also 
  examined 
  for 
  the 
  same 
  purpose, 
  and 
  several 
  peculiar 
  and 
  unex- 
  

   pected 
  parasites 
  were 
  found 
  upon 
  their 
  gills. 
  

  

  And 
  finally 
  different 
  kinds 
  of 
  ascidians, 
  of 
  which 
  many 
  species 
  live 
  

   upon 
  the 
  mangrove 
  roots 
  around 
  the 
  Bogue 
  Islands 
  about 
  a 
  mile 
  to 
  

   the 
  west 
  of 
  the 
  town, 
  and 
  upon 
  the 
  ocean 
  bottom 
  in 
  that 
  vicinity, 
  

   were 
  carefully 
  examined 
  in 
  order 
  to 
  obtain 
  the 
  various 
  copepods, 
  

   isopods, 
  and 
  amphipods, 
  which 
  are 
  commensals 
  or 
  semiparasites 
  

   within 
  them. 
  

  

  The 
  present 
  paper 
  gives 
  the 
  results 
  of 
  these 
  examinations 
  and 
  is 
  

   chiefly 
  concerned 
  with 
  the 
  copepods 
  although 
  one 
  new 
  species 
  of 
  

   ostracod 
  is 
  described. 
  For 
  the 
  opportunity 
  of 
  prosecuting 
  this 
  study 
  

   and 
  for 
  the 
  excellent 
  laboratory 
  privileges 
  which 
  were 
  furnished 
  sin- 
  

   cere 
  thanks 
  are 
  returned 
  to 
  the 
  authorities 
  of 
  the 
  Johns 
  Hopkins 
  

   University. 
  To 
  Dr. 
  E. 
  A. 
  Andrews, 
  the 
  director 
  of 
  the 
  laboratory, 
  

   the 
  author 
  is 
  indebted 
  for 
  valuable 
  suggestions 
  and 
  advice. 
  And 
  to 
  

   the 
  authorities 
  of 
  the 
  United 
  States 
  National 
  Museum 
  a 
  deep 
  

   obligation 
  for 
  much 
  timely 
  assistance 
  in 
  this 
  and 
  many 
  other 
  similar 
  

   investigations 
  is 
  acknowledged. 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  44— 
  No. 
  1950. 
  

  

  