﻿Primicorallina 
  trentonensis 
  Whitfield 
  

  

  Page 
  197 
  

  

  1 
  One 
  of 
  the 
  type 
  specimens 
  redrawn, 
  to 
  show 
  the 
  verticillate 
  

  

  arrangement 
  of 
  the 
  branchlets 
  of 
  the 
  second 
  order 
  at 
  a 
  and 
  

   those 
  of 
  the 
  third 
  order 
  at 
  b 
  

  

  2 
  Restoration 
  of 
  a 
  thallus 
  

  

  Trenton 
  Hmestone, 
  Middleville, 
  N. 
  Y. 
  

  

  Callithamnopsis 
  fruticosa 
  (Hall) 
  

  

  Page 
  201 
  

  

  3 
  One 
  of 
  the 
  type 
  specimens 
  redrawn 
  to 
  show 
  the 
  apex 
  of 
  the 
  

  

  main 
  branch 
  and 
  the 
  articulation 
  of 
  the 
  branchlets 
  at 
  the 
  

  

  division 
  points 
  and 
  the 
  paired 
  arrangement 
  of 
  those 
  of 
  the 
  

   first 
  order 
  

  

  4 
  A 
  spec'men 
  on 
  the 
  same 
  slab 
  with 
  the 
  types, 
  exhibiting 
  tlie 
  

  

  twisting 
  of 
  the 
  bifurcating 
  main 
  branches 
  

   Trenton 
  limestone, 
  Platteville, 
  Wis. 
  

  

  Callithamnopsis 
  delicatula 
  sp. 
  nov. 
  

  

  See 
  plate 
  2, 
  figure 
  i 
  

   Page 
  203 
  

  

  5 
  Large 
  fragment 
  of 
  thallus 
  showing 
  the 
  segmentation, 
  the 
  alter- 
  

  

  nate 
  contractions 
  and 
  expansions 
  of 
  the 
  branch 
  and 
  the 
  verti- 
  

  

  cillate 
  arrangement 
  of 
  the 
  branchlets 
  

   Trenton 
  limestone, 
  Glens 
  Falls, 
  N. 
  Y. 
  

   Originals 
  of 
  figures 
  i, 
  3, 
  4 
  in 
  the 
  American 
  Museum 
  of 
  Natural 
  

  

  History, 
  that 
  of 
  figure 
  5 
  in 
  the 
  New 
  York 
  State 
  Museum 
  

  

  