﻿Tentaculites 
  jaculus 
  Clarke 
  

  

  Fig. 
  i 
  A 
  cluster 
  of 
  tubes 
  with 
  characteristic 
  irregularity 
  of 
  an- 
  

   nulation. 
  Natural 
  size 
  

   Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

  Tentaculites 
  crotalinus 
  Salter 
  

  

  Figr 
  2 
  A 
  cluster 
  of 
  tubes, 
  x 
  3 
  

  

  Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

  Tropidocyclus 
  antarcticus 
  Clarke 
  

  

  Fig. 
  3 
  Two 
  accidently 
  conjoined 
  individuals 
  

  

  4 
  Dorsal 
  view 
  shoAving 
  the 
  character 
  of 
  the 
  striae, 
  x 
  1^ 
  

   Locality: 
  Pebble 
  island, 
  West 
  Falkland 
  

  

  Plectonotus 
  (Bucaniella) 
  hapsideus 
  Clarke 
  

  

  Fig. 
  5 
  A 
  laterally 
  compressed 
  individual 
  showing 
  the 
  dorsal 
  seam 
  

   6, 
  7 
  Two 
  other 
  similarly 
  compressed 
  shells 
  

   Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

  Bellerophon 
  quadrilobatus 
  Salter? 
  

  

  Fig. 
  8 
  An 
  internal 
  cast 
  of 
  a 
  trilobed 
  shell 
  which 
  may 
  pertain 
  to 
  

   this 
  species 
  

   Locality: 
  Pebble 
  island, 
  West 
  Falkland 
  

  

  Diaphorostoma 
  allardycei 
  Clarke 
  

  

  Fig. 
  9, 
  10, 
  11 
  Three 
  views 
  of 
  this 
  species, 
  indicating 
  its 
  form 
  and 
  

   style 
  of 
  ornament 
  

   Locality: 
  Pebble 
  island, 
  West 
  Falkland 
  

  

  Plectonotus 
  (Bucaniella) 
  dereimsi 
  Knod 
  

  

  Fig. 
  12, 
  13, 
  14 
  Views 
  of 
  more 
  or 
  less 
  complete 
  examples 
  of 
  these 
  

   shells 
  

   Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

  164 
  

  

  