﻿PLATE 
  VIII. 
  

  

  Ceramopora 
  labecula 
  Hall, 
  

  

  Page 
  119. 
  

   Fig. 
  1. 
  A 
  small 
  colony 
  of 
  the 
  bryozoan, 
  attached 
  to 
  the 
  surface 
  of 
  a 
  Fenestella. 
  

  

  showing 
  distinct 
  rounded 
  tubular 
  cells 
  : 
  enlarged 
  to 
  six 
  diameters. 
  

  

  In 
  the 
  figure, 
  the 
  cells 
  are 
  a 
  little 
  too 
  distinctly 
  individualized. 
  

   Fig. 
  2. 
  A 
  fragment 
  of 
  Fenestella 
  upon 
  which 
  are 
  two 
  separate 
  colonies 
  of 
  the 
  

  

  species, 
  enlarged 
  to 
  the 
  same 
  degree 
  as 
  in 
  the 
  preceding 
  figure. 
  

   Fig. 
  3. 
  Another 
  and 
  larger 
  separate 
  colony 
  enlarged 
  to 
  the 
  same 
  degree. 
  This 
  

  

  and 
  the 
  colony 
  in 
  fig. 
  2 
  show 
  the 
  ordinary 
  forms 
  of 
  cell 
  pertaining 
  

  

  to 
  the 
  species. 
  

  

  Ceramopora 
  coxfluexs 
  Hall. 
  

   Page 
  119. 
  

  

  Fig. 
  4. 
  The 
  bryozoan 
  entirely 
  encrusting 
  a 
  specimen 
  of 
  Platyostoma 
  Niagarense. 
  

  

  Fig. 
  5. 
  An 
  enlargement 
  to 
  show 
  the 
  character 
  of 
  the 
  cells 
  and 
  the 
  centers 
  of 
  

   radiation 
  forming 
  tubercles. 
  The 
  cells 
  radiate 
  a 
  little 
  more 
  dis- 
  

   tinctly 
  from 
  these 
  centers 
  than 
  is 
  apparent 
  in 
  the 
  figure. 
  

  

  Ceramopora 
  agellus 
  Hall, 
  

  

  Page 
  120. 
  

  

  Fig. 
  6. 
  A 
  colony 
  attached 
  to 
  the 
  surface 
  of 
  StropJwstylus 
  cyclostomus. 
  The 
  cells 
  

   are 
  largest 
  at 
  the 
  initial 
  point 
  near 
  the 
  lower 
  end, 
  and 
  gradually 
  

   decrease 
  toward 
  the 
  margin, 
  where 
  they 
  are 
  exceedingly 
  minute. 
  

   Enlarged 
  to 
  four 
  diameters. 
  

  

  Paleschara 
  ofeula 
  Hall, 
  

  

  Page 
  120. 
  

  

  Fig. 
  7. 
  A 
  fragment 
  (natural 
  size), 
  encrusting 
  some 
  foreign 
  substance. 
  

   Fig. 
  8. 
  An 
  enlargement 
  of 
  a 
  portion 
  of 
  the 
  surface 
  to 
  six 
  diameters, 
  showing 
  

   the 
  character 
  of 
  the 
  cells. 
  . 
  

  

  Paleschara 
  maculata 
  Hall. 
  

  

  Page 
  121. 
  

  

  Fig. 
  9. 
  A 
  specimen 
  (natural 
  size), 
  encrusting 
  some 
  foreign 
  cylindrical 
  body. 
  

  

  Fig. 
  10. 
  An 
  enlargement 
  of 
  the 
  surface 
  to 
  the 
  same 
  degree 
  as 
  fig. 
  8, 
  and 
  present- 
  

   ing 
  also, 
  near 
  the 
  center 
  of 
  the 
  figure, 
  one 
  of 
  the 
  maculae 
  of 
  larger 
  

   cells 
  . 
  

  

  