﻿254 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  (recurvus, 
  bent 
  back, 
  alluding 
  to 
  the 
  posterior 
  portion 
  of 
  the 
  body.) 
  

  

  In 
  1840 
  Milne 
  Edwards 
  very 
  briefly 
  described 
  what 
  he 
  called 
  a 
  new 
  

   species 
  of 
  Perinella, 
  P. 
  sultana. 
  In 
  1864 
  Nordmann 
  figured 
  and 
  

   described 
  a 
  new 
  variety 
  of 
  the 
  same 
  species, 
  P. 
  sultana 
  sigmoidea. 
  In 
  

   1865 
  Heller 
  established 
  the 
  new 
  genus 
  Lernseolophus 
  upon 
  some 
  

   specimens 
  which 
  he 
  identified 
  as 
  identical 
  with 
  those 
  described 
  by 
  

   Milne 
  Edwards. 
  

  

  No 
  one 
  of 
  the 
  three 
  descriptions, 
  nor 
  even 
  all 
  of 
  them 
  together, 
  are 
  

   very 
  complete, 
  especially 
  with 
  regard 
  to 
  the 
  mouth 
  parts, 
  but 
  enough 
  

   is 
  shown 
  to 
  fully 
  establish 
  the 
  validity 
  of 
  the 
  genus. 
  

  

  Milne 
  Edwards 
  does 
  not 
  even 
  mention 
  the 
  mouth 
  parts; 
  Nordmann 
  

   shows 
  a 
  series 
  of 
  11 
  small 
  papillae 
  arranged 
  in 
  the 
  shape 
  of 
  an 
  ellipse, 
  

   the 
  anterior 
  one 
  unpaired 
  on 
  the 
  midline, 
  the 
  others 
  more 
  or 
  less 
  

   regularly 
  paired. 
  Heller 
  claimed 
  to 
  distinguish 
  a 
  pair 
  of 
  antennae 
  

   on 
  the 
  front 
  of 
  the 
  head, 
  and 
  around 
  the 
  mouth 
  one 
  pair 
  of 
  "palps" 
  

   and 
  two 
  pairs 
  of 
  " 
  maxillipeds." 
  These 
  last 
  thi'ee 
  pairs 
  of 
  append- 
  

   ages 
  he 
  described 
  as 
  being 
  armed 
  with 
  terminal 
  "claw-joints," 
  and 
  

   the 
  second 
  maxillipeds 
  as 
  being 
  distinctly 
  three-jointed. 
  He 
  makes 
  

   no 
  mention 
  of 
  the 
  small 
  papillae 
  in 
  the 
  bottom 
  of 
  the 
  mouth 
  depres- 
  

   sion, 
  nor 
  does 
  his 
  figure 
  show 
  them. 
  If 
  they 
  were 
  present 
  the 
  total 
  

   number 
  would 
  be 
  the 
  same 
  as 
  that 
  given 
  by 
  Nordmann, 
  but 
  the 
  

   arrangement 
  would 
  be 
  radically 
  different. 
  If 
  there 
  really 
  were 
  

   three 
  pairs 
  of 
  claws 
  around 
  the 
  mouth, 
  they 
  must 
  have 
  represented 
  

   the 
  second 
  antennae, 
  a 
  pair 
  of 
  maxillae, 
  and 
  a 
  pair 
  of 
  maxillipeds. 
  In 
  

   the 
  present 
  species, 
  however, 
  there 
  are 
  no 
  traces 
  of 
  any 
  claws, 
  and 
  

   the 
  two 
  anterior 
  pairs 
  of 
  papillae 
  that 
  look 
  like 
  separate 
  appendages 
  in 
  

   the 
  adult, 
  are 
  certainly 
  parts 
  of 
  the 
  same 
  single 
  pair 
  in 
  the 
  develop- 
  

   mental 
  stage. 
  This 
  would 
  indicate 
  that 
  the 
  maxillae 
  are 
  entirely 
  

   lacking, 
  as 
  in 
  other 
  genera 
  belonging 
  to 
  this 
  family. 
  

  

  The 
  present 
  species 
  is 
  sufficiently 
  distinguished 
  from 
  sultanus 
  by 
  

   the 
  comparatively 
  smaller 
  size 
  of 
  the 
  head, 
  by 
  the 
  branching 
  of 
  the 
  

   posterior 
  horn, 
  by 
  the 
  fact 
  that 
  the 
  body 
  is 
  bent 
  only 
  once 
  and 
  then 
  

   very 
  sharply, 
  instead 
  of 
  into 
  a 
  broad 
  sigmoid 
  curve, 
  and 
  by 
  the 
  over- 
  

   lapping 
  of 
  the 
  four 
  pairs 
  of 
  legs. 
  Also 
  if 
  Heller's 
  description 
  of 
  the 
  

   mouth 
  parts 
  is 
  correct, 
  they 
  are 
  much 
  better 
  developed 
  in 
  sultanus 
  

   than 
  in 
  recurvus. 
  

  

  The 
  fact 
  that 
  no 
  satisfactory 
  description 
  has 
  ever 
  been 
  given 
  of 
  any 
  

   species 
  of 
  the 
  genus 
  is 
  sufficient 
  warrant, 
  for 
  the 
  present 
  somewhat 
  

   detailed 
  one. 
  

  

  LERNiEOLOPHUS 
  STRIATUS, 
  new 
  species. 
  

  

  Plate47, 
  figs. 
  200, 
  2(jl. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Two 
  females 
  were 
  obtained 
  from 
  the 
  

   throat 
  of 
  the 
  barracuda, 
  Sphyrxna 
  barracuda, 
  July 
  15, 
  1910. 
  They 
  

   were 
  fastened 
  to 
  the 
  floor 
  of 
  the 
  throat, 
  just 
  inside 
  the 
  lower 
  lip. 
  The 
  

  

  