﻿HUDSON 
  RIVER 
  BEDS 
  NEAR 
  ALBANY 
  525 
  

  

  Pholidops- 
  subtruncata, 
  Hall, 
  v 
  

   Dalmanella 
  testudinaria, 
  Dalman 
  sp. 
  cc 
  

   Plectorthis 
  plicatella 
  Hall, 
  c 
  

  

  Plectambonites 
  sericea, 
  Soicerby 
  sp. 
  var. 
  aspera, 
  James 
  1 
  

   Kafinesquina 
  alternata, 
  Emmons 
  sp. 
  cc 
  

   Parastrophia 
  hemiplicata. 
  Hall, 
  c 
  

   Pleurotomaria 
  cf. 
  lenticularis, 
  Hall, 
  v 
  

  

  Murchisonia 
  (Lophospira) 
  uniangulata 
  var. 
  abbreviata, 
  Hall, 
  c 
  

   Cyclonerna 
  bilix, 
  Conrad, 
  sp. 
  r 
  

   Archinacella 
  patelliformis, 
  Hall 
  sp. 
  cc 
  

  

  Protowarthia 
  cancellata, 
  Hall, 
  sp. 
  (=BelleropliOD, 
  bilobatus, 
  

   Hall) 
  c 
  

  

  Cyrtolites 
  ornatus, 
  Conrad, 
  r 
  

   Clionychia 
  undata, 
  Emmons 
  sp. 
  c 
  

   Technopborus 
  cancellatus 
  sp. 
  n. 
  c 
  

   Cleidopborous 
  planulatus. 
  Hall, 
  cc 
  

   Ljrodesma 
  poststriatuni, 
  Emmons 
  sp. 
  r 
  

   L. 
  pulcbellum, 
  Hall, 
  c 
  

   Orthoceras 
  tenuitextum, 
  Hall 
  sp. 
  r 
  

   O. 
  lineolatum. 
  Hall 
  sp. 
  r 
  

   Spyroceras 
  bilineaturo, 
  Hall 
  sp. 
  c 
  

   Isotelus 
  gigas, 
  Be 
  Kay. 
  c 
  

   Calvmniene 
  senaria, 
  Conrad, 
  r 
  

   Pterygonietopus 
  callicephalus. 
  Hall, 
  cc 
  

  

  ^his 
  variety 
  is 
  marked 
  by 
  acute, 
  oblique 
  wrinkles 
  along 
  the 
  cardinal 
  

   line, 
  such 
  as 
  occur 
  in 
  Strophomena 
  rugosa 
  var. 
  subtenta. 
  

   and 
  Strophomena 
  i 
  n 
  c 
  u 
  r 
  v 
  a 
  t 
  a 
  (= 
  S. 
  f 
  i 
  1 
  i 
  t 
  e 
  x 
  t 
  a). 
  This 
  feature 
  

   is 
  constant 
  in 
  the 
  vast 
  numbers 
  of 
  valves 
  which 
  compose 
  some 
  of 
  the 
  peb- 
  

   bles 
  in 
  the 
  conglomerate 
  of 
  Rysedorph 
  hill 
  (see 
  p. 
  546) 
  and 
  Moor- 
  

   dener 
  kill, 
  and 
  it 
  continues 
  upward 
  into 
  the 
  Utica 
  shale 
  of 
  Green 
  Island, 
  

   and 
  Menands, 
  though 
  in 
  these 
  localities 
  forms 
  with 
  and 
  without 
  wrinkles 
  

   occur 
  together. 
  The 
  same 
  variety 
  was 
  observed 
  by 
  Dr 
  Beecher 
  in 
  the 
  

   material 
  from 
  the 
  Dudley 
  observatory, 
  and 
  listed 
  as 
  Lept 
  a 
  e 
  D 
  a 
  s 
  u 
  b- 
  

   tenta?. 
  The 
  wrinkling 
  is 
  apparently 
  rare 
  among 
  specimens 
  eollected 
  

   west 
  of 
  the 
  Hudson 
  river 
  region, 
  for 
  it 
  is 
  not 
  mentioned 
  in 
  the 
  very 
  

   detailed 
  accounts 
  of 
  the 
  characters 
  of 
  this 
  species 
  in 
  the 
  west 
  by 
  Sardeson, 
  

   Winchell 
  and 
  Schuchert, 
  but 
  it 
  was 
  listed 
  among 
  the 
  Cincinnati 
  fossils 
  by 
  

   JTames 
  as 
  Leptaena 
  aspera 
  and 
  has 
  been 
  flgnred 
  by 
  Hall 
  and 
  Whit- 
  

   ^field. 
  (Geol. 
  stir. 
  Ohio. 
  Paleontology, 
  v.l. 
  pL 
  5. 
  fig. 
  3 
  f.) 
  

  

  