﻿134 
  Twenty-eighth 
  Eeport 
  02* 
  the 
  State 
  Museum. 
  

  

  GlYPTASTER 
  INORISTATUS. 
  

   Plate 
  14, 
  Figs. 
  1-6. 
  

  

  Glyptaster 
  inomatus 
  Hall. 
  Trans. 
  Alb. 
  Inst., 
  vol. 
  iv, 
  p. 
  205. 
  Abstract 
  p. 
  11; 
  May, 
  

   1863. 
  

  

  Body 
  somewhat 
  urn-shaped, 
  abruptly 
  spreading 
  at 
  the 
  base 
  

   with 
  the 
  sides 
  somewhat 
  straight 
  or 
  moderately 
  expanding 
  ; 
  

   pentangular, 
  the 
  angles 
  corresponding 
  to 
  the 
  rays, 
  and 
  becom- 
  

   ing 
  ten-angled 
  above 
  the 
  division 
  of 
  the 
  rays. 
  Basal 
  plates 
  

   much 
  developed, 
  distinctly 
  pentangular, 
  with 
  the 
  lower 
  mar- 
  

   gins 
  expanded 
  and 
  thickened, 
  with 
  a 
  double 
  or 
  triple 
  node 
  on 
  

   each 
  one, 
  and 
  spreading 
  beyond 
  the 
  column. 
  Subradials 
  large, 
  

   six-sided 
  except 
  the 
  one 
  on 
  the 
  anal 
  side 
  which 
  is 
  seven-sided. 
  

   First 
  radials 
  about 
  equal 
  in 
  size 
  to 
  the 
  subradials, 
  heptagonal 
  

   (as 
  usual 
  in 
  the 
  genus) 
  ; 
  second 
  radials 
  much 
  smaller, 
  quad- 
  

   rangular, 
  and 
  pentangular 
  in 
  the 
  postero-lateral 
  rays 
  ; 
  third 
  

   radials 
  a 
  little 
  larger 
  than 
  the 
  second, 
  heptagonal. 
  Supra- 
  

   radial 
  series 
  consisting 
  of 
  four 
  or 
  more 
  plates 
  before 
  reaching 
  

   the 
  free 
  arms, 
  with 
  an 
  intersupraradial 
  space 
  which 
  is 
  occu- 
  

   pied 
  by 
  five 
  or 
  more 
  plates. 
  First 
  interradial 
  plate 
  octagonal, 
  

   but 
  little 
  smaller 
  than 
  the 
  first 
  radial, 
  and 
  supporting 
  two 
  

   smaller 
  plates 
  in 
  the 
  second 
  range, 
  three 
  in 
  the 
  third 
  range, 
  

   and 
  several 
  smaller 
  plates 
  above. 
  On 
  the 
  anal 
  side 
  the 
  first 
  

   plate 
  is 
  octagonal, 
  as 
  large 
  or 
  larger 
  than 
  the 
  first 
  interradial 
  

   plate, 
  and 
  resting 
  on 
  the 
  heptagonal 
  subradial 
  plate, 
  sup- 
  

   porting 
  four 
  plates 
  in 
  the 
  second 
  range, 
  with 
  ten 
  or 
  twelve 
  

   plates 
  irregularly 
  disposed 
  above. 
  

  

  The 
  subradial 
  plates 
  are 
  prominent 
  in 
  the 
  middle, 
  with 
  low 
  

   undefined 
  angular 
  ridges 
  extending 
  to 
  the 
  sides 
  of 
  the 
  plates, 
  

   the 
  intermediate 
  spaces 
  depressed. 
  The 
  ridges 
  from 
  the 
  center 
  

   to 
  the 
  upper 
  sides 
  of 
  the 
  plates 
  are 
  a 
  little 
  more 
  prominent, 
  

   and 
  meet 
  at 
  the 
  sutures 
  with 
  similar 
  ridges 
  on 
  the 
  lower 
  sides 
  

   of 
  the 
  first 
  radials 
  ; 
  these 
  uniting 
  on 
  the 
  center 
  are 
  continued 
  

   in 
  a 
  stronger 
  ridge 
  along 
  the 
  center 
  and 
  following 
  the 
  subdi- 
  

   vision 
  become 
  more 
  prominent 
  on 
  the 
  supraradial 
  plates. 
  The 
  

   faces 
  of 
  the 
  radial 
  plates 
  are 
  marked 
  by 
  similar 
  but 
  less 
  

   defined 
  elevations 
  extending 
  to 
  the 
  sutures, 
  and 
  meeting 
  sim- 
  

   ilar 
  ridges 
  on 
  the 
  interradial 
  plates. 
  There 
  are 
  rarely 
  some 
  

   intermediate 
  folds 
  or 
  undefined 
  ridges 
  upon 
  the 
  surface 
  of 
  the 
  

   plates. 
  

  

  