﻿122 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  and 
  that 
  the 
  last-named 
  naturalists 
  were 
  followed 
  by 
  Dujardin 
  and 
  

   Hupe. 
  I 
  am 
  led 
  to 
  make 
  these 
  remarks 
  from 
  the 
  fact 
  that 
  through- 
  

   out 
  the 
  ' 
  Eevision 
  of 
  the 
  Echini 
  ' 
  the 
  mode 
  of 
  spelling 
  which 
  is 
  both 
  

   etymologically 
  and 
  historically 
  incorrect 
  is 
  not 
  only 
  adopted, 
  but 
  is 
  

   ascribed 
  to 
  Valenciennes, 
  to 
  Liitken, 
  and 
  to 
  Verrill, 
  and 
  is, 
  curiously 
  

   enough, 
  carried 
  on 
  into 
  the 
  lately 
  published 
  Keport 
  on 
  the 
  Echi- 
  

   noidea 
  collected 
  by 
  the 
  ' 
  Challenger 
  ' 
  Expedition. 
  

   Port 
  Jackson. 
  

  

  13. 
  Echinometra 
  lucunter. 
  

   A. 
  Agassiz, 
  Rev. 
  JEch. 
  p. 
  431, 
  

  

  Port 
  MoUe 
  (beach) 
  ; 
  Lcvuka, 
  Fiji, 
  

  

  14. 
  Fibularia 
  volva. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  509. 
  

   Prince 
  of 
  Wales 
  Channel. 
  

  

  15. 
  Cljrpeaster 
  humiUs. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  510. 
  

   Port 
  MoUe 
  (4 
  fms.). 
  

  

  16. 
  Laganum 
  depressum. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  518. 
  

  

  Torres 
  Straits 
  ; 
  Prince 
  of 
  Wales 
  Channel. 
  

  

  The 
  British 
  Museum 
  contains 
  specimens 
  collected 
  by 
  H.M.S. 
  

   ' 
  Challenger 
  ' 
  in 
  the 
  Arafura 
  Sea. 
  

  

  17. 
  Laganum 
  decagonale. 
  

  

  Peronella 
  decagonalis, 
  A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  520. 
  

   Laganum 
  decagonale, 
  Bell, 
  Ann. 
  8^- 
  Mag. 
  N. 
  II. 
  (5) 
  xi. 
  p. 
  130. 
  

  

  The 
  investigations 
  which 
  I 
  have 
  been 
  able 
  to 
  make 
  into 
  the 
  value 
  

   of 
  the 
  generic 
  and 
  specific 
  characters 
  of 
  the 
  Laganidae 
  (Ann. 
  & 
  Mag. 
  

   Nat. 
  Hist. 
  (5) 
  xi. 
  p. 
  130) 
  have 
  led 
  me 
  to 
  the 
  conclusion 
  that 
  no 
  

   valid 
  grounds 
  exist 
  for 
  the 
  generic 
  or 
  subgeneric 
  separation 
  of 
  

   " 
  Peronella 
  " 
  from 
  Lar/anum. 
  

  

  Prince 
  of 
  Wales 
  Channel 
  ; 
  Thursday 
  Island. 
  

  

  This 
  appears 
  to 
  be 
  one 
  of 
  those 
  species 
  around 
  which 
  misappre- 
  

   hensions 
  have 
  collected 
  ; 
  the 
  earlier 
  and 
  not 
  ungraceful 
  method 
  of 
  

   registration 
  which 
  induced 
  De 
  Blainville* 
  to 
  associate 
  with 
  this 
  

   species 
  the 
  name 
  of 
  the 
  naturalist 
  to 
  whom 
  he 
  owed 
  his 
  specimen 
  

   has, 
  no 
  doubt 
  in 
  haste, 
  been 
  regarded 
  by 
  Professor 
  Alexander 
  

   Agassiz 
  t 
  as 
  indicating 
  Lesson 
  to 
  be 
  the 
  author 
  of 
  the 
  species. 
  

  

  * 
  Diet. 
  Sci. 
  Nat. 
  vol. 
  xlviii. 
  p. 
  229; 
  Man. 
  d'Act. 
  p. 
  215. 
  

   t 
  Rev. 
  Ech. 
  p. 
  47, 
  and 
  much 
  less 
  accurately 
  on 
  p. 
  148. 
  

  

  