﻿HUDSON 
  RIVER 
  BEDS 
  NEAR 
  ALBANY 
  521 
  

  

  Aparchites 
  minutissiraus, 
  Hall, 
  e 
  

  

  Ctenobolbina 
  ciliata, 
  Emmons 
  sp. 
  c 
  

  

  Lepidoeoleus 
  jainesi, 
  Hall 
  & 
  Whitfield 
  sp. 
  cc 
  1 
  

  

  Turrilepas 
  (?) 
  filosus 
  sp. 
  n. 
  r 
  2 
  

  

  Pollicipes 
  siluricus 
  sp. 
  n. 
  r 
  

  

  Calymniene 
  sp. 
  small 
  pygidia. 
  r 
  

  

  Trinucleus 
  concentricus, 
  Hall, 
  cc 
  

  

  Triarthrus 
  becki, 
  Green 
  sp. 
  cc 
  

  

  While 
  this 
  fauna 
  by 
  its 
  most 
  common 
  fossils, 
  Corynoides 
  

   eurtus, 
  Diplograptus 
  quadrimucronatus, 
  and 
  

   Triarthrus 
  becki, 
  which 
  cover 
  whole 
  surfaces, 
  and 
  by 
  the 
  

   presence 
  of 
  Leptobolus 
  insignis 
  and 
  Lingula 
  curta 
  

   is 
  characterized 
  as 
  being 
  of 
  Utica 
  age, 
  it 
  contains 
  a 
  considerable 
  

   number 
  of 
  Trenton 
  as 
  well 
  as 
  of 
  Lorraine 
  forms. 
  The 
  Trenton 
  

   forms 
  are: 
  

  

  Climacograptus 
  caudatus, 
  Cyclospira 
  bisul- 
  

   ■cata, 
  Oyrtoceras 
  annul 
  a 
  turn, 
  Goniophora 
  

   carinata, 
  Ctenodonta 
  levata, 
  and 
  Gonularia 
  

   trentonensis. 
  

  

  The 
  Lorraine 
  forms 
  are 
  : 
  Pholidops 
  subtruncata, 
  

   Plectambonites 
  plicatella, 
  Modiolopsis 
  mo- 
  

   diolaris, 
  Aparchites 
  minutissimus, 
  Cteno- 
  

   bolbina 
  ciliata. 
  

  

  x 
  The 
  vertical 
  range 
  of 
  this 
  minute 
  but 
  pretty 
  fossil 
  cirriped 
  is 
  worthy 
  of 
  

   special 
  notice. 
  It 
  was 
  originally 
  described 
  by 
  Hall 
  and 
  Whitfield 
  (Paleon- 
  

   tology 
  of 
  Ohio. 
  1875. 
  2:106) 
  from 
  the 
  Hudson 
  river 
  group, 
  Cincinnati 
  O., 
  

   the 
  authors 
  stating 
  however, 
  at 
  the 
  same 
  time, 
  that 
  they 
  had 
  received 
  

   from 
  G. 
  D. 
  Walcott 
  " 
  specimens 
  apparently 
  identical 
  on 
  surfaces 
  of 
  Tren- 
  

   ton 
  limestone 
  from 
  near 
  Trenton 
  Falls 
  N. 
  Y." 
  This 
  statement 
  can 
  be 
  

   verified 
  by 
  the 
  writer, 
  who 
  collected 
  in 
  the 
  Rafinesquina 
  deltoi- 
  

   d 
  e 
  a 
  beds 
  of 
  Trenton 
  Falls 
  a 
  well 
  preserved 
  specimen. 
  The 
  collections 
  

   from 
  the 
  shales 
  of 
  the 
  Hudson 
  valley 
  prove 
  now 
  that 
  it 
  also 
  occurs 
  and 
  is 
  

   even 
  most 
  abundant 
  in 
  different 
  horizons 
  of 
  the 
  Utica 
  terrane; 
  for 
  it 
  has 
  

   been 
  found 
  besides 
  in 
  the 
  Lorraine 
  beds 
  of 
  Waterford 
  (station 
  1), 
  in 
  the 
  

   upper 
  Utica 
  beds 
  of 
  Green 
  Island 
  (station 
  10) 
  and 
  of 
  the 
  Dudley 
  observa- 
  

   tory 
  (Dr 
  Beecher), 
  in 
  the 
  lower 
  Utica 
  beds 
  of 
  Mechanicsville 
  (station 
  51 
  in 
  

   great 
  profusion, 
  and 
  in 
  the 
  middle 
  Trenton 
  shales 
  of 
  Port 
  Schuyler 
  (station 
  

   23). 
  It 
  therefore 
  persisted, 
  at 
  least 
  in 
  this 
  region, 
  from 
  the 
  middle 
  Trenton 
  

   into 
  the 
  Lorraine. 
  ' 
  

  

  'See 
  descriptions 
  of 
  this 
  and 
  the 
  next 
  species 
  p. 
  577. 
  

  

  