﻿Callithamnopsis 
  delicatula 
  sp. 
  no 
  v. 
  

  

  See 
  Plate 
  i, 
  figure 
  s 
  

   Page 
  2C3 
  

  

  1 
  Frs^gments 
  of 
  two 
  branches 
  in 
  close 
  approximation 
  indicating- 
  

  

  their 
  production 
  by 
  bifurcation 
  of 
  a 
  single 
  branch 
  

  

  2 
  A 
  fragment 
  of 
  thallus 
  showing 
  the 
  habitus 
  of 
  the 
  same 
  and 
  the 
  

  

  apex. 
  The 
  upper 
  and 
  lower 
  portions 
  lie 
  in 
  different 
  planes 
  of 
  

   the 
  shale. 
  The 
  specimen 
  shows 
  the 
  eiTect 
  of 
  current 
  dragging. 
  

   Trenton 
  limestone, 
  Glens 
  Falls, 
  N. 
  Y. 
  

  

  Chaetocladus 
  sardesoni 
  sp. 
  nov. 
  

  

  Page' 
  204 
  

  

  3, 
  4, 
  7 
  Fragments 
  of 
  the 
  thallus 
  showing, 
  in 
  natural 
  sections, 
  the 
  

  

  main 
  branch 
  and 
  the 
  whorls 
  of 
  branchlets 
  

   5, 
  6 
  The 
  apexes 
  of 
  specimens 
  showing 
  the 
  whorls 
  of 
  branchlets 
  

   8-1 
  1 
  Some 
  portions 
  of 
  the 
  thallus 
  more 
  enlarged 
  to 
  show 
  the 
  bul- 
  

   bous 
  bases 
  of 
  the 
  branchlets 
  and 
  their 
  cavities, 
  possibly 
  con- 
  

   ceptacles 
  

   Trenton-Galena 
  limestone, 
  Minneapolis, 
  Minn. 
  

   The 
  originals 
  of 
  all 
  figures 
  are 
  in 
  the 
  New 
  York 
  State 
  Museum. 
  

  

  