﻿44 
  Dr. 
  H. 
  Ludwig 
  on 
  Ophiopteron 
  elegans. 
  

  

  the 
  penultimate 
  joints 
  scarcely 
  transverse. 
  Head 
  coarsely 
  

   and 
  closely 
  punctate, 
  with 
  only 
  a 
  small 
  space 
  on 
  the 
  disk 
  

   glabrous. 
  Thorax 
  long 
  and 
  narrow, 
  punctured 
  like 
  the 
  head, 
  

   with 
  a 
  broad, 
  definite, 
  longitudinal 
  space 
  smooth. 
  Elytra 
  

   elongate 
  and 
  narrow, 
  rather 
  closely 
  and 
  coarsely 
  punctate, 
  

   black, 
  only 
  the 
  hind 
  margin 
  indefinitely 
  fusco-testaceous. 
  

  

  A 
  single 
  example 
  was 
  found 
  at 
  Yokohama, 
  7th 
  April, 
  

   1880. 
  

  

  Gafius 
  rufescenSf 
  n. 
  sp. 
  

  

  Rufo-brunneus 
  ; 
  capite 
  thoraccque 
  nigricantibus 
  ; 
  antenuis 
  rufis, 
  

   pedibus 
  fusco-testaceis, 
  cinereo-pubescens, 
  opacus 
  ; 
  capite 
  tho- 
  

   raceque 
  dense, 
  fortiter 
  profundeque 
  punctatis, 
  linea 
  longitudinali 
  

   lata, 
  arguta, 
  glabra. 
  

  

  Long. 
  5 
  millim. 
  

  

  This 
  species 
  is 
  allied 
  to 
  the 
  European 
  Philonihus 
  sericeus, 
  

   auct., 
  but 
  is 
  distinguished 
  by 
  the 
  colour 
  and 
  other 
  characters 
  

   apparently 
  subject 
  to 
  but 
  little 
  variation. 
  The 
  head 
  and 
  

   thorax 
  are 
  much 
  more 
  deeply 
  and 
  coarsely 
  punctate, 
  and 
  the 
  

   glabrous 
  line 
  on 
  these 
  parts 
  is 
  broader, 
  definite, 
  and 
  more 
  

   shining, 
  the 
  antennas 
  are 
  shorter, 
  and 
  the 
  punctuation 
  of 
  the 
  

   elytra 
  and 
  hind 
  body 
  is 
  not 
  quite 
  so 
  dense 
  and 
  fine. 
  From 
  

   P. 
  algarum 
  it 
  is 
  distinguished 
  by 
  the 
  colour, 
  the 
  much 
  less 
  

   slender 
  form, 
  and 
  much 
  shorter 
  and 
  thicker 
  antennas. 
  The 
  

   male 
  is 
  distinguished 
  by 
  the 
  possession 
  of 
  a 
  setigerous 
  pore 
  

   on 
  each 
  of 
  the 
  second 
  and 
  third 
  ventral 
  plates 
  and 
  by 
  a 
  large 
  

   excision 
  of 
  the 
  terminal 
  plate. 
  The 
  setigerous 
  pores 
  do 
  not 
  

   exist 
  in 
  the 
  corresponding 
  sex 
  of 
  the 
  allied 
  species. 
  

  

  Yokohama, 
  ■ 
  Niigata, 
  Hakodate, 
  under 
  seaweed, 
  probably 
  

   generally 
  distributed 
  in 
  suitable 
  localities 
  on 
  the 
  coast. 
  I 
  

   have 
  a 
  specimen 
  from 
  Hong 
  Kong 
  in 
  my 
  collection. 
  

  

  [To 
  be 
  continued.] 
  

  

  V. 
  — 
  Ophiopteron 
  elegans, 
  a 
  new, 
  probably 
  Natatory 
  , 
  Form 
  

   of 
  Ophiurid. 
  By 
  Dr. 
  HUBERT 
  LUDWIG 
  *. 
  

  

  Among 
  the 
  Holothurias 
  which 
  Dr. 
  J. 
  Brock 
  collected 
  during 
  

   his 
  travels 
  in 
  the 
  Indian 
  Archipelago 
  and 
  entrusted 
  to 
  me 
  to 
  

   be 
  worked 
  up 
  there 
  was 
  a 
  single 
  example 
  of 
  an 
  Ophiuran 
  

  

  * 
  Translated 
  from 
  the 
  ' 
  Zeitschrift 
  fur 
  wissenschaftliche 
  Zoologie,' 
  

   Bd. 
  xlvii. 
  pp. 
  459-464 
  (with 
  a 
  plate). 
  

  

  