﻿352 
  MARINE 
  MOLLUSC 
  A 
  DESCRIBED 
  BY 
  T. 
  P. 
  CARPENTER 
  

  

  Plate 
  27.—ATYS, 
  MANGELIA, 
  PALLOCHITON, 
  CYANOPLAX, 
  AND 
  MOPALIA 
  

   Figure 
  Page 
  

  

  1-4. 
  Atys 
  casta 
  (Carpenter) 
  239 
  

  

  Figs. 
  3, 
  4 
  (same), 
  lectotype, 
  U.S.N.M., 
  No. 
  4014; 
  length, 
  9 
  mm.; 
  greatest 
  

   diameter, 
  4 
  mm. 
  ; 
  Figs. 
  1, 
  2 
  (same), 
  paratype, 
  same 
  no., 
  length, 
  2 
  mm. 
  ; 
  great- 
  

   est 
  diameter, 
  1.5 
  mm. 
  

  

  5, 
  6. 
  Mangclia 
  interfossa 
  Carpenter 
  230 
  

  

  Syntypes, 
  Redpath 
  Mus., 
  No. 
  94. 
  Fig. 
  15, 
  length, 
  8 
  mm.; 
  greatest 
  diameter, 
  

   3.5 
  mm.; 
  Fig. 
  16, 
  length, 
  7 
  mm.; 
  greatest 
  diameter, 
  2.5 
  mm. 
  

  

  7. 
  Pallochiton 
  lanitginostis 
  "Dall" 
  268 
  

  

  "Syntype," 
  Redpath 
  Mus., 
  No. 
  66. 
  Length, 
  30 
  mm.; 
  width, 
  17 
  mm. 
  

  

  8-10. 
  Cyanoplax 
  hartzvegii 
  (Carpenter) 
  264 
  

  

  Syntype, 
  Redpath 
  Mus., 
  No. 
  68. 
  Length, 
  15.4-f- 
  (attached 
  plates) 
  ; 
  width, 
  10.3 
  

   mm. 
  

  

  11. 
  Cyanoplax 
  hartwcgii 
  mittalli 
  (Carpenter) 
  264 
  

  

  Holotype, 
  British 
  Mus. 
  (Nat. 
  Hist.), 
  No. 
  61.5.20.102. 
  Photo 
  Crown 
  copyright 
  

   reserve, 
  neg. 
  6171 
  ; 
  X 
  3. 
  

  

  12. 
  Mopalia 
  lignosa 
  (Gould) 
  281 
  

  

  Holotype 
  of 
  C. 
  montereyensis 
  Carpenter. 
  British 
  Mus. 
  (Nat. 
  Hist.), 
  1951. 
  9-7.- 
  

   1-5. 
  Photo 
  Crown 
  copyright 
  reserve, 
  neg. 
  6747; 
  X 
  1. 
  

  

  