﻿354 
  MARIXE 
  AfOI.T.T'SCA 
  DESCRTRED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Plate 
  29.— 
  CHAETOPLFMRA 
  AND 
  ISCHNOCHITON 
  

   Figure 
  Page 
  

  

  1-4. 
  Chactoplcxira 
  gemma 
  "Dall" 
  Pilsbry 
  266 
  

  

  Syntypes, 
  Redpath 
  Mus., 
  No. 
  49, 
  Fig. 
  2, 
  length, 
  12.5 
  mm.; 
  width, 
  7 
  mm. 
  

   5-8. 
  Ischnochiton 
  corrugatus 
  Carpenter 
  in 
  Pilsbry 
  271 
  

  

  Holotype, 
  Redpath 
  Mus., 
  No. 
  37. 
  Length, 
  22 
  mm. 
  ± 
  ; 
  width, 
  5.5 
  mm. 
  

   9-14. 
  Jschnochiton 
  veredentiens 
  Carpenter 
  269 
  

  

  Holotype, 
  U.S.N.M., 
  No. 
  16259. 
  Width 
  (plates), 
  3.5 
  mm. 
  to 
  4 
  mm. 
  

   15. 
  Ischnochiton 
  fallax 
  Carpenter 
  in 
  Pilsbry 
  271 
  

  

  Holotype, 
  Redpath 
  Mus., 
  No. 
  64. 
  Length, 
  44.7 
  mm. 
  ; 
  width, 
  27 
  mm. 
  

  

  