﻿440 
  rnocEEDixGS 
  of 
  the 
  xattonal 
  musefm. 
  

  

  Fig. 
  1 
  is 
  a 
  sketch 
  of 
  tlie 
  head 
  of 
  a 
  living* 
  specimen 
  introduced 
  liere 
  

   to 
  ilhistratc 
  a 
  common 
  condition.' 
  

  

  in 
  the 
  National 
  Musenni 
  collection 
  there 
  are 
  five 
  lots 
  of 
  these 
  juira 
  

   sites, 
  Nos. 
  471G, 
  4737, 
  4717, 
  and 
  4725. 
  

  

  1. 
  Bottle 
  contains 
  no 
  label 
  to 
  indicate 
  either 
  locality 
  or 
  host. 
  Tlie 
  

   specimens 
  are 
  not 
  in 
  good 
  condition, 
  but 
  are 
  easily 
  identified. 
  Five 
  

   specimens, 
  besides 
  a 
  number 
  of 
  fragments. 
  Longest 
  specimen, 
  230 
  mm. 
  ; 
  

   greatest 
  breadth, 
  0..5; 
  breadth 
  of 
  head, 
  bothriaappressed, 
  3.5; 
  breadth 
  

   of 
  head 
  with 
  divergent, 
  cruciform 
  bothria, 
  4.5. 
  

  

  2. 
  Label 
  reads: 
  " 
  Big 
  ray. 
  No. 
  182," 
  No 
  locality. 
  

  

  Tlie 
  vial 
  contains 
  four 
  specimens 
  in 
  good 
  condition. 
  Dimensions 
  of 
  

   longest: 
  Length, 
  IGOmm. 
  ; 
  breadth, 
  3; 
  diameter 
  of 
  head, 
  3.5; 
  diameter 
  

   of 
  bothrium, 
  2. 
  

  

  The 
  specimens 
  are 
  i)lump, 
  almost 
  cylindrical, 
  bothria 
  contracted, 
  cor- 
  

   rugated, 
  cushion-shaped, 
  appressed 
  so 
  as 
  to 
  make 
  quadrangular 
  head 
  

   when 
  viewed 
  in 
  front. 
  

  

  3. 
  Label: 
  "From 
  long-tailed 
  ray." 
  No 
  locality. 
  Three 
  specimens. 
  

   Largest 
  specimen, 
  165 
  mm. 
  

  

  4. 
  Label: 
  "Big 
  ray, 
  No. 
  83." 
  No 
  locality. 
  Two 
  specimens 
  with 
  a 
  

   number 
  of 
  fragments. 
  Average 
  length, 
  180 
  mm.; 
  greatest 
  breadth, 
  

   4.5; 
  other 
  dimensions 
  as 
  above. 
  

  

  5. 
  No. 
  4409, 
  U.S.N.M. 
  Label: 
  '■'Trygon 
  centrura.'''' 
  One 
  specim»en. 
  

  

  21. 
  ECHENEIBOTHRIUM 
  VARIABILE 
  Beneden. 
  

  

  Echenelhothrlicm 
  rariahUe 
  Beneden, 
  U. 
  S. 
  Fish 
  Com. 
  Kept., 
  1886, 
  pp. 
  460-462, 
  pi. 
  i, 
  

   figs. 
  9-13; 
  1887, 
  pp. 
  766-767. 
  

  

  No. 
  4787, 
  U.S.N.M. 
  Twelve 
  specimens 
  of 
  the 
  common 
  skate 
  [Raja 
  

   erinacea) 
  were 
  examined 
  for 
  parasites 
  at 
  Woods 
  Holl, 
  Massachusetts, 
  

   July 
  23, 
  1889. 
  Numerous 
  examples 
  of 
  IJ. 
  variabile 
  were 
  found 
  in 
  the 
  

   spiral 
  intestines 
  of 
  most 
  of 
  the 
  fish. 
  

  

  22. 
  PARATyENIA 
  MEDUSIA 
  Linton. 
  

  

  raratania 
  meditsin 
  Linton, 
  U. 
  S. 
  Fisli 
  Comi. 
  Kept., 
  1897, 
  pp. 
  862-866, 
  pi. 
  xv, 
  

   figs. 
  5-9. 
  

  

  No. 
  4799, 
  U.S.N.M. 
  Two 
  specimens 
  which 
  agree 
  perfectly 
  with 
  my 
  

   former 
  observations 
  on 
  this 
  species 
  were 
  found 
  in 
  the 
  intestine 
  of 
  the 
  

   sting 
  ray 
  {Dasj/atis 
  centrtira); 
  Woods 
  Holl, 
  jMassachusetts, 
  July 
  18, 
  

   18^9. 
  

  

  The 
  dimensions 
  are 
  not 
  materially 
  different 
  from 
  those 
  given 
  in 
  the 
  

   original 
  description 
  of 
  the 
  sj)ecies. 
  

  

  ' 
  U. 
  S. 
  Fish 
  Com. 
  Eept., 
  1887, 
  p. 
  759. 
  

  

  