﻿Report 
  of 
  the 
  State 
  Geologist. 
  

  

  999 
  

  

  the 
  slope 
  of 
  the 
  cones, 
  which 
  are 
  somewhat 
  appressed 
  laterally, 
  is 
  

   essentially 
  that 
  of 
  the 
  lateral 
  slopes 
  of 
  the 
  pedicle-valve. 
  The 
  

   character 
  of 
  the 
  jngum 
  has 
  not 
  been 
  ascertained. 
  The 
  muscular 
  

   impressions 
  consist 
  of 
  four 
  distinct 
  adductor 
  scars 
  which 
  are 
  

   separated 
  medially 
  by 
  a 
  low, 
  thin 
  ridge. 
  

  

  Surface 
  of 
  both 
  valves 
  covered 
  by 
  a 
  few 
  coarse 
  plications, 
  con- 
  

   tinuous 
  from 
  the 
  umbones 
  to 
  the 
  margins. 
  Of 
  these 
  there 
  are 
  

   four 
  or 
  five 
  on 
  the 
  lateral 
  slopes. 
  On 
  the 
  pedicle- 
  valve 
  the 
  

   median 
  pair 
  is 
  the 
  strongest, 
  and 
  forms 
  a 
  sort 
  of 
  double 
  fold 
  

   with 
  a 
  low 
  sinus 
  betweeD 
  them. 
  On 
  the 
  brachial 
  valve 
  there 
  is 
  a 
  

   corresponding 
  low 
  median 
  sinas, 
  which 
  contains 
  a 
  simple 
  or 
  

   double 
  plication. 
  The 
  exterior 
  is 
  covered 
  with 
  fine 
  elevated 
  

   radiating 
  lines 
  which 
  are 
  usually 
  interrupted 
  to 
  form 
  radiating 
  

   rows 
  of 
  elongate, 
  lachryrniform 
  pustules. 
  

  

  Shell 
  substance 
  fibrous, 
  impunctate. 
  

  

  Type, 
  Vitulina 
  pustulosa, 
  Hall. 
  

  

  Distribution. 
  Lower 
  and 
  Middle 
  Devonian 
  (Xew 
  York, 
  Brazil, 
  

   Bolivia, 
  South 
  Africa). 
  

  

  Anabaia, 
  Clarke. 
  1S93. 
  

   Shell 
  allied 
  to 
  Lept^ccelia 
  in 
  the 
  structure 
  of 
  its 
  cardinal 
  pro- 
  

   cess 
  and 
  articulating 
  apparatus, 
  having, 
  however, 
  a 
  highly 
  convex 
  

   brachial 
  valve 
  with 
  a 
  median 
  septum 
  extending 
  one-half 
  its 
  

  

  ^^3^ 
  

  

  Fig. 
  376. 
  Fig. 
  377. 
  Fig 
  375. 
  

  

  Figs. 
  376-379— 
  ^.n 
  a 
  baia 
  Paraia, 
  Clarke. 
  

   Exterior, 
  showing 
  the" 
  brachial 
  valve. 
  

  

  Fig. 
  :79. 
  

  

  Fig. 
  376, 
  

  

  Fig. 
  37?. 
  — 
  Profile 
  of 
  a 
  somewhat 
  compressed 
  specimen. 
  

  

  Fig. 
  273— 
  Interior 
  of 
  the 
  brachial 
  valve: 
  showing 
  the 
  cardinal 
  process, 
  crura, 
  dental 
  sockets 
  

   and 
  septum. 
  

   Fig. 
  379.— 
  Internal 
  cast 
  of 
  portion 
  of 
  the 
  pedicle-valve; 
  showing 
  the 
  muscular 
  scars. 
  

  

  length, 
  two 
  short, 
  abruptly 
  ending 
  plications 
  on 
  the 
  low 
  median 
  

   fold, 
  upturned 
  anterior 
  margins, 
  and 
  explanate 
  cardinal 
  extremities. 
  

  

  Type, 
  Anabaia 
  Paraia, 
  Clarke. 
  

  

  Distribution. 
  Upper 
  Silurian 
  (Amazonas). 
  

  

  57 
  

  

  