﻿EXPLANATION 
  OF 
  PLATES 
  359 
  

  

  Plate 
  34.—ISCHNOCHITON 
  COOPERI 
  

   Figure 
  Page 
  

  

  1-6. 
  Ischnochiton 
  cooperi 
  "Dall," 
  Pilsbry 
  274 
  

  

  /. 
  cooperi 
  aciitior 
  Cpr. 
  MS. 
  Redpath 
  Mus., 
  No. 
  8. 
  Figs. 
  1-5, 
  "types." 
  See 
  text. 
  

   Fig. 
  5, 
  length, 
  20 
  mm.; 
  width, 
  11.5 
  mm. 
  Fig. 
  6, 
  "type," 
  Redpath 
  Mus., 
  No. 
  

   18, 
  Todos 
  Santos 
  Bay, 
  Hemphill. 
  

  

  