﻿278 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Crustacea, 
  116*, 
  2118^-31°. 
  

  

  Cuesta, 
  40^ 
  55'; 
  illus. 
  facing 
  p. 
  25. 
  

  

  Cyathophyllum, 
  1381 
  

  

  hydraulicum, 
  117^ 
  I38^ 
  

   Cybele 
  punctata, 
  225°. 
  

   Cyclas 
  staminea, 
  246°-47\ 
  

  

  striatina, 
  246^ 
  

   Cyclostoma 
  lapidaria, 
  242^ 
  

  

  tricarinata, 
  243\ 
  

   Cyrtina, 
  1971 
  

  

  pyramidalis, 
  I97^ 
  

   Cyrtoceras, 
  216*. 
  

  

  cancellatum, 
  2I6^ 
  

  

  subcancellatum, 
  2I6^ 
  

   Cystoidea, 
  i48^-52\ 
  

   Cytherina 
  cylindrica, 
  218^ 
  

  

  spinosa, 
  220^ 
  

  

  Balmanella, 
  187^. 
  

  

  elegantula, 
  loi*, 
  103*, 
  I87^ 
  

   Dalmanites, 
  223®-24^ 
  

  

  limulurus, 
  105*, 
  224\ 
  

   Davis, 
  W. 
  M., 
  cited, 
  253', 
  40^ 
  41^; 
  

  

  mentioned, 
  i8^ 
  

   Dawson, 
  G. 
  M., 
  cited, 
  254\ 
  

   Day, 
  D. 
  F., 
  catalogue 
  of 
  plants, 
  if. 
  

   Delthyris 
  sulcatus, 
  20ol 
  

   Desor, 
  E., 
  cited, 
  254\ 
  

   Devil's 
  hole, 
  15^ 
  I7^ 
  lio'; 
  view 
  near, 
  

  

  facing 
  p. 
  104. 
  

   Devonic 
  series, 
  33^, 
  120^-21^; 
  Siluro- 
  

  

  Devonic 
  contact, 
  iiy^-20^. 
  

   Diamesopora, 
  I75^ 
  

  

  dichotoma, 
  175^ 
  

   Diaphorostoma, 
  2II®-I2^ 
  

  

  niagarense, 
  103^, 
  2I2\ 
  

   Dictyonella, 
  179*. 
  

  

  corallifera, 
  I79^ 
  

   Dictyonema, 
  I33^-34^ 
  

  

  retiforme, 
  i33'-34'- 
  

   Dip 
  of 
  strata, 
  35^-361 
  

   Diploclema, 
  162*. 
  

  

  sparsa, 
  162®. 
  

   Diplophyllum, 
  139^-40^ 
  

  

  caespitosum, 
  I39^-40^ 
  

   Dolichopterus, 
  230*. 
  

  

  macrochirus, 
  230^ 
  

   Drainage 
  features, 
  development 
  of, 
  

  

  37'-54'. 
  

   Drymotrypa, 
  i69*-7ol 
  

  

  diffusa, 
  i69'-7ol 
  

  

  Dufiferin 
  islands, 
  if. 
  

   Dundas 
  valley, 
  27^, 
  42^-46^. 
  

  

  Eddy 
  basin, 
  78*, 
  79^. 
  

   Encrinurus, 
  225*. 
  

  

  ornatus, 
  225^ 
  

   Enterolasma, 
  i36^-:^f. 
  

  

  caliculus, 
  ioi\ 
  137". 
  

   Eucalyptocrinus, 
  loi^ 
  103^ 
  I57^-58^ 
  

  

  decorus, 
  157^-581 
  

   Eurypterida, 
  116*, 
  228*-3I^ 
  

   Eurypterus, 
  228^-30^ 
  

  

  dekayi, 
  230^ 
  

  

  giganteus, 
  229°. 
  

  

  lacustris, 
  229^ 
  

  

  var. 
  robustus, 
  229^. 
  

  

  pachychirus, 
  23o\ 
  

  

  pustulosus, 
  229^ 
  

  

  remipes, 
  229"; 
  illus. 
  facing 
  p. 
  229. 
  

  

  robustus, 
  229^ 
  

   Eusarcus, 
  230^ 
  

  

  grandis, 
  230*. 
  

  

  scorpionis, 
  23i\ 
  

  

  Fairchild, 
  H. 
  L., 
  cited, 
  254', 
  57'; 
  

  

  mentioned, 
  i8^ 
  

   Favosites, 
  112^ 
  125°, 
  i40*'-42l 
  

  

  constrictus, 
  142". 
  

  

  niagarensis, 
  I42^-43^ 
  

  

  parasiticus, 
  141". 
  

  

  pyriformis, 
  " 
  141^-42^ 
  

  

  venustus, 
  i4o'-4i*. 
  

   Featherstonaugh, 
  G. 
  W., 
  cited, 
  254^ 
  

   Fenestella, 
  i7o'-7il 
  

  

  elegans, 
  170^-711 
  

  

  prisca? 
  171*. 
  

  

  tenuiceps, 
  171*. 
  

   Fleming, 
  M. 
  A., 
  cited, 
  254^ 
  

   Flexibilia, 
  I59^-6o^. 
  

   Fluvial 
  period, 
  66^-82*. 
  

   Foerste, 
  A. 
  F., 
  cited, 
  254". 
  

   Foot, 
  Lyman, 
  cited, 
  254^ 
  

   Fort 
  Massassauga, 
  27^ 
  

   Fort 
  Niagara, 
  271 
  

   Fossiliferous 
  sections, 
  i6°-2i. 
  

   Fossils, 
  130^-46^; 
  in 
  Siluric 
  beds, 
  dis- 
  

   tribution, 
  232-37. 
  

   Foster's 
  flats, 
  I5^ 
  7^-76*; 
  illus. 
  fac- 
  

   ing 
  p. 
  72; 
  shell-bearing 
  gravels, 
  

   I 
  238^ 
  

  

  