﻿356 
  MARINE 
  MOLLUSCA 
  DESCRIBED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Plate 
  3\.—ISCHN0CHIT0N 
  AND 
  MOP 
  ALIA 
  

   Figure 
  Page 
  

  

  1-4. 
  Ischnochiton 
  aurcotinctus 
  Carpenter 
  in 
  Pilshry 
  272 
  

  

  Holotype, 
  Redpath 
  Mus., 
  No. 
  26. 
  Length, 
  6 
  mm.; 
  width, 
  4 
  mm. 
  

  

  5, 
  6. 
  Ischnochiton 
  califoniicnsis 
  Berry 
  272 
  

  

  "Syntype, 
  /. 
  pectinatus 
  Cpr." 
  Redpatli 
  Mus., 
  No. 
  70. 
  Length, 
  25 
  mm. 
  ; 
  width, 
  

   10 
  mm. 
  

  

  7. 
  Ischnochiton 
  regularis 
  (Carpenter) 
  276 
  

  

  Holotype, 
  British 
  Mus. 
  (Nat. 
  Hist.), 
  No. 
  1950. 
  11.9.1. 
  Photo 
  Crown 
  copyright 
  

   reserve, 
  neg. 
  5165 
  ; 
  X 
  2. 
  

  

  8, 
  9. 
  Ischnochiton 
  radians 
  Carpenter 
  in 
  Pilshry 
  274 
  

  

  Paratype, 
  U.S.N.M., 
  No. 
  19471. 
  Width, 
  7 
  mm. 
  

   10-17. 
  Ischnochiton 
  radians 
  Carpenter 
  in 
  Pilshry 
  274 
  

  

  Paratype, 
  Redpath 
  Mus., 
  No. 
  25. 
  Enlarged 
  about 
  X 
  4. 
  

   18. 
  Mopalia 
  acuta 
  (Carpenter) 
  280 
  

  

  Holotype, 
  British 
  Mus. 
  (Nat. 
  Hist.), 
  "B. 
  M. 
  61.5.20.103. 
  Coll. 
  Nuttall." 
  Photo, 
  

   British 
  Mus. 
  (Nat. 
  Hist.) 
  ; 
  X 
  2. 
  Santa 
  Barbara. 
  

  

  