﻿236 
  rUOCEKDINGS 
  OF 
  XUE 
  MALACOLOGICAI, 
  f^OCIKTV. 
  

  

  llecent 
  Mollusea, 
  their 
  Synonyms 
  and 
  Types 
  " 
  {I.e., 
  pp. 
  129-219), 
  he 
  

   phiced 
  Xorfhia 
  (misspelt 
  Korthea 
  in 
  the 
  index) 
  in 
  the 
  Nassina, 
  next 
  

   after 
  Desmoulta. 
  

  

  .N'assa 
  northi'a 
  is 
  figured 
  in 
  Griffith 
  & 
  Pidgoon's 
  edition 
  of 
  

   Cuvier's 
  "'Animal 
  Kingdom", 
  vol. 
  xii, 
  1834, 
  pi. 
  xxx, 
  f. 
  2. 
  

   Gray's 
  name 
  does 
  not 
  appear, 
  and 
  the 
  species 
  therefore 
  properly 
  

   belongs 
  to 
  the 
  authors 
  ot" 
  the 
  book. 
  There 
  is 
  no 
  description 
  in 
  the 
  

   text. 
  The 
  specimen 
  figured 
  is 
  manifestly 
  immature, 
  and 
  is 
  

   probably 
  the 
  shell 
  in 
  Gray's 
  own 
  collection 
  in 
  the 
  Natural 
  History 
  

   Museum, 
  on 
  tho 
  tablet 
  of 
  which 
  is 
  written, 
  in 
  Grav's 
  own 
  liand, 
  

   "Is^orthia?" 
  

  

  Kiener 
  (loonog., 
  livr. 
  vi, 
  Dec. 
  1834, 
  p. 
  23, 
  \)l. 
  ix, 
  f. 
  28) 
  figures 
  

   tlie 
  species 
  as 
  Buccinum 
  scrratiiin 
  of 
  Dufresue, 
  which 
  is 
  in 
  all 
  

   probability 
  a 
  manuscript 
  name. 
  

  

  Desliayes 
  (in 
  his 
  edition 
  of 
  Lamarck's 
  Anim. 
  sans 
  Vert., 
  vol. 
  x, 
  

   1844, 
  p. 
  192, 
  Xo. 
  69) 
  alters 
  the 
  name 
  to 
  Buccinum 
  pristis, 
  serrata 
  

   being 
  preoccupied 
  by 
  Brocchi 
  {Subapp. 
  Foss., 
  1814, 
  pi. 
  v, 
  f 
  . 
  4) 
  for 
  

   a 
  fossil 
  JVassa. 
  

  

  H. 
  & 
  A. 
  Adams 
  (Genera, 
  vol. 
  i, 
  1853, 
  p. 
  Ill, 
  pi. 
  xii, 
  f. 
  1) 
  place 
  

   Northia 
  in 
  the 
  subfam. 
  Nassime 
  between 
  the 
  genera 
  ComineUa 
  and 
  

   Truncaria. 
  

  

  Chenu 
  (Mannel, 
  1859, 
  p. 
  159,f. 
  172) 
  places 
  Xorthia 
  as 
  a 
  sub-genus 
  

   of 
  Buccinum, 
  with 
  ComineUa 
  and 
  Amphissa. 
  

  

  Tryon 
  (Manual, 
  vol. 
  iv, 
  1882, 
  p. 
  5) 
  places 
  Northin 
  first 
  among 
  the 
  

   genera 
  of 
  Nassidfe, 
  immediately 
  before 
  Truncaria, 
  adding, 
  however 
  

   (p. 
  8), 
  that 
  he 
  thinks 
  he 
  would 
  have 
  placed 
  it 
  in 
  the 
  Terebridte 
  had 
  

   it 
  not 
  been 
  already 
  assigned 
  to 
  the 
  NassidaD, 
  or 
  to 
  any 
  other 
  family. 
  

  

  P. 
  Fischer 
  {Man. 
  de 
  Conch., 
  1884, 
  p. 
  636) 
  places 
  Northia 
  in 
  the 
  

   Nassidse, 
  as 
  a 
  sub-genus 
  of 
  Dorsanum 
  { 
  = 
  Pseudostrombus), 
  which 
  comes 
  

   between 
  Canidia 
  and 
  Buccinanops 
  { 
  = 
  BuUia). 
  

  

  Dall 
  (Proc. 
  U.S. 
  Nat. 
  Mus., 
  vol. 
  xxxvii, 
  1909, 
  p. 
  215) 
  places 
  the 
  

   genus 
  Northia 
  in 
  the 
  family 
  Alectrionidae, 
  as 
  the 
  Nassidae 
  must 
  now 
  

   be 
  called, 
  between 
  Alectrion 
  and 
  Buccinanops. 
  

  

  Thus 
  the 
  general 
  consent 
  of 
  authorities 
  places 
  Northia 
  in 
  or 
  near 
  

   the 
  Alectrionidoe, 
  a 
  position 
  which 
  the 
  shape 
  of 
  the 
  shell, 
  with 
  its 
  

   handsomely 
  toothed 
  outer 
  lip, 
  might 
  appear 
  to 
  warrant. 
  But 
  an 
  

   examination 
  of 
  the 
  radula 
  gives 
  reason 
  for 
  modifying 
  the 
  current 
  view. 
  

  

  As 
  will 
  be 
  seen 
  by 
  an 
  examination 
  of 
  the 
  accompanying 
  figure, 
  

   the 
  laterals 
  are 
  bicuspid 
  and 
  simple, 
  while 
  the 
  base 
  of 
  the 
  rhachidian 
  

   tooth 
  is 
  narrow 
  and 
  arched, 
  with 
  the 
  side 
  produced 
  below 
  into 
  

   wings. 
  Both 
  these 
  points 
  are 
  characteristic 
  of 
  Alectrion, 
  aiul 
  of 
  

   other 
  genera 
  as 
  well, 
  but 
  here 
  the 
  resemblance 
  ceases, 
  wliile 
  the 
  

  

  