﻿358 
  MARINE 
  MOLLUSCA 
  DESCRIBED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Plate 
  33.~ISCHN0CHIT0N. 
  MOP 
  ALIA, 
  BASILIOCHITON 
  , 
  

   AND 
  CALLISTOCHITON 
  

  

  Figure 
  Pa 
  fie 
  

  

  1-5. 
  Ischnochiton 
  sinudentatus 
  Carpenter 
  in 
  Pilsbry 
  276 
  

  

  Syntype, 
  Redpath 
  Mus., 
  No. 
  27. 
  Figs. 
  1, 
  2, 
  same 
  specimen 
  photographed 
  in 
  dif- 
  

   ferent 
  positions 
  to 
  bring 
  out 
  different 
  details, 
  length, 
  14 
  mm. 
  Figs. 
  4-6, 
  free 
  

   plates. 
  

  

  6-13. 
  Mopalia 
  sinuata 
  Carpenter 
  282 
  

  

  Syntype, 
  Redpath 
  Mus., 
  No. 
  58. 
  Length, 
  23 
  mm.; 
  width, 
  6.5 
  mm. 
  (length 
  of 
  

   series 
  of 
  plates, 
  not 
  intact). 
  

  

  14. 
  Basiliochiton 
  heathii 
  (Pilsbry) 
  284 
  

  

  Holotype, 
  A.N.S.P., 
  No. 
  71902. 
  Type 
  species. 
  Length, 
  25 
  mm.; 
  width, 
  12 
  mm. 
  

  

  15-21. 
  Callistochiton 
  decoratus 
  Pilsbry 
  278 
  

  

  Redpath 
  Mus., 
  No. 
  50. 
  Fig. 
  21, 
  length, 
  25 
  mm.; 
  width, 
  13 
  mm. 
  

  

  