﻿34 
  PROCKKDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIEXy. 
  

  

  I 
  agree 
  with 
  Dull 
  and 
  Heclley 
  that 
  Pyrene 
  is 
  a 
  distinct 
  genus 
  from 
  

   Columlella. 
  I 
  have 
  been 
  questioned 
  as 
  to 
  my 
  argument, 
  the 
  only 
  

   rule 
  in 
  this 
  connexion 
  reading 
  " 
  The 
  name 
  of 
  a 
  family 
  is 
  formed 
  by 
  

   adding 
  the 
  ending 
  -idm 
  ... 
  to 
  the 
  root 
  oE 
  the 
  name 
  of 
  its 
  type 
  

   genus 
  ". 
  The 
  only 
  type 
  genus 
  of 
  a 
  family 
  I 
  can 
  recognize 
  is 
  the 
  

   oldest 
  genus 
  admitted 
  in 
  the 
  family. 
  The 
  selection 
  of 
  any 
  other 
  

   wouhl 
  cause 
  as 
  much 
  confusion 
  as 
  there 
  is 
  in 
  recognizing 
  the 
  type 
  

   species 
  of 
  a 
  genus 
  at 
  present, 
  and 
  give 
  rise 
  to 
  even 
  more 
  complications. 
  

  

  Tkivia. 
  

  

  In 
  these 
  Proceedings, 
  vol. 
  viii, 
  1909, 
  p. 
  288 
  et 
  seq., 
  H. 
  0. 
  N. 
  Shaw 
  

   gave 
  some 
  "Notes 
  on 
  the 
  genera 
  Cyprma 
  and 
  Trivia''. 
  These 
  notes 
  

   were 
  of 
  special 
  value 
  as 
  therein 
  was 
  accepted 
  the 
  fact 
  that 
  the 
  

   "Descr. 
  Cat. 
  Shells 
  by 
  J. 
  E. 
  Gray 
  ", 
  usually 
  quoted 
  as 
  of 
  1832, 
  was 
  

   never 
  published 
  at 
  that 
  date, 
  but 
  only 
  existed 
  in 
  proof. 
  

  

  Shaw 
  endeavoured 
  to 
  trace 
  the 
  first 
  publication 
  of 
  the 
  new 
  species 
  

   generally 
  credited 
  to 
  the 
  above-named 
  Catalogue. 
  There 
  is, 
  and 
  

   always 
  will 
  be, 
  great 
  difficulty 
  in 
  fixing 
  the 
  first 
  user 
  of 
  a 
  manuscript 
  

   name, 
  when 
  such 
  name 
  has 
  been 
  made 
  commonly 
  available 
  to 
  all 
  

   contemporary 
  workers. 
  Consequently 
  I 
  now 
  show 
  that 
  most 
  of 
  the 
  

   data, 
  as 
  regards 
  generic 
  names, 
  provided 
  by 
  Shaw, 
  must 
  be 
  amended, 
  

   but 
  do 
  not 
  suggest 
  my 
  own 
  results 
  are 
  final. 
  These 
  must 
  be 
  regarded 
  

   as 
  simply 
  stepping-stones, 
  and 
  my 
  facts 
  are 
  open 
  to 
  further 
  correction 
  

   as 
  soon 
  as 
  published. 
  

  

  Thus, 
  according 
  to 
  Shaw, 
  Luponia 
  and 
  Trivia 
  dated 
  from 
  the 
  

   Conchological 
  Manual 
  of 
  Sowerby, 
  1839 
  ; 
  Ariciaivom 
  H. 
  & 
  A. 
  Adams, 
  

   1854 
  ; 
  and 
  Naria 
  from 
  Gray, 
  1857. 
  I 
  had 
  rxoie^ 
  Luponia 
  occurred 
  in 
  

   Sowerby's 
  Conch. 
  lUus., 
  Cyprasadsefs/c], 
  p. 
  12, 
  published 
  in 
  Nov.-Dec. 
  

   1837, 
  when 
  I 
  referred 
  to 
  the 
  Penny 
  Cyclopedia, 
  vol. 
  viii, 
  and 
  found 
  

   that 
  Broderip 
  monographed 
  the 
  Cyprajidoe 
  on 
  pp. 
  254-9, 
  and 
  that 
  

   his 
  account 
  was 
  based 
  on 
  Gray's 
  "Descr. 
  Cat." 
  Broderip 
  wrote: 
  

   " 
  Mr. 
  Grav, 
  whose 
  arrangement 
  we 
  select, 
  as 
  being, 
  in 
  our 
  opinion, 
  

   the 
  best 
  which 
  has 
  hitherto 
  appeared." 
  This 
  article 
  was 
  published 
  

   in 
  Jtme, 
  1837, 
  or 
  earlier, 
  so 
  that 
  the 
  above 
  four 
  generic 
  or 
  subgeneric 
  

   names 
  date 
  from 
  here 
  as 
  they 
  all 
  occur 
  in 
  this 
  essaj'. 
  

  

  On 
  p. 
  255 
  Cyprcea 
  is 
  subdivided 
  into 
  sub-genera, 
  the 
  sub-genus 
  

   CyprcBa 
  being 
  accompanied 
  by 
  two 
  illustrations, 
  one 
  of 
  Cyprcea 
  

   childreni, 
  Gray, 
  with 
  figs, 
  a, 
  b 
  in 
  text, 
  loc. 
  (?) 
  ; 
  and 
  the 
  other 
  of 
  Cyprcea 
  

   adamsonii. 
  Gray, 
  two 
  figures 
  in 
  text, 
  from 
  Pacific 
  Ocean 
  (?). 
  On 
  the 
  

   same 
  page 
  the 
  sub-genus 
  Aricia 
  was 
  proposed 
  with 
  species 
  Cyprcea 
  

   guttata, 
  moneta, 
  etc. 
  On 
  p. 
  256 
  the 
  sub-genus 
  Naria 
  appears 
  with 
  

   only 
  Cyprcea 
  irrorata, 
  Gray, 
  described 
  from 
  South 
  Seas 
  with 
  two 
  

   figures 
  in 
  text. 
  Again, 
  the 
  genus 
  Luponia 
  is 
  defined 
  (p. 
  256) 
  with 
  

   only 
  the 
  species 
  Luponia 
  algoensis, 
  figured 
  and 
  described, 
  followed 
  by 
  

   genus 
  CyprcBovuIa, 
  with 
  C. 
  capetisis 
  alone. 
  Then 
  comes 
  the 
  genus 
  

   Irivia, 
  which 
  is 
  divided 
  into 
  four 
  sections 
  : 
  

  

  Section 
  a. 
  Trivia 
  carnea, 
  fig. 
  2 
  in 
  text 
  and 
  described. 
  

   /3, 
  europcea 
  ,, 
  ,, 
  

  

  r^, 
  pediculun 
  ,, 
  ,, 
  

  

  h, 
  pusttdata 
  ,, 
  ,, 
  

  

  