﻿EXPLANATION 
  OF 
  PLATES 
  355 
  

  

  Plate 
  30.—ISCHNOCHITON 
  AND 
  CHAETOPLEURA 
  

   Figure 
  Page 
  

  

  1-5. 
  Ischnochiton 
  nezvcomhi 
  Carpenter 
  in 
  Pilsbry 
  „ 
  269 
  

  

  Holotype, 
  Redpath 
  Mus., 
  No. 
  19. 
  Length, 
  10 
  mm.; 
  width, 
  7 
  mm, 
  

  

  6. 
  Chaetopleura 
  gemma 
  "Dall" 
  Pilsbry 
  266 
  

  

  Specimen 
  with 
  Figs. 
  1-5, 
  Redpath 
  Mus., 
  No. 
  19. 
  

  

  7. 
  Ischnochiton 
  retiporosus 
  Carpenter 
  275 
  

  

  Holotype, 
  /. 
  subexpressus 
  Cpr. 
  ms., 
  Redpath 
  Mus., 
  No. 
  28. 
  Length, 
  8.5 
  mm. 
  ; 
  

   width, 
  5.7 
  mm. 
  

  

  8. 
  9. 
  Ischnochiton 
  sinudentatus 
  Carpenter 
  in 
  Pilsbry 
  276 
  

  

  Syntypes, 
  Redpath 
  Mus., 
  No. 
  27. 
  Fig. 
  8, 
  length, 
  10.7 
  mm. 
  ; 
  width, 
  6.8 
  mm. 
  Fig. 
  

   9, 
  photographed 
  in 
  different 
  position 
  to 
  show 
  longitudinal 
  sculpture. 
  

   10-12. 
  Ischnochiton 
  scabricostatus 
  (Carpenter) 
  269 
  

  

  Holotype, 
  U.S.N.M., 
  No. 
  16268. 
  Length, 
  6 
  mm.; 
  width, 
  4.5 
  mm. 
  

   13. 
  Ischnochiton 
  radians 
  Carpenter 
  in 
  Pilsbry 
  274 
  

  

  Lectotype, 
  Redpath 
  Mus., 
  No. 
  25. 
  Length, 
  18 
  mm. 
  ; 
  width, 
  8.5 
  mm. 
  

  

  