﻿EXPLANATION 
  OF 
  PLATES 
  353 
  

  

  L 
  

  

  Plate 
  28.—MANGELIA, 
  LEPTOCHITON, 
  CYANOPLAX. 
  AND 
  NUTTALINA 
  

  

  Figure 
  Page 
  

  

  1, 
  lA. 
  Mangelia 
  nitens 
  Carpenter 
  231 
  

  

  Syntypes, 
  Redpath 
  Mus., 
  No. 
  93. 
  Fig. 
  1, 
  length, 
  6.5 
  mm.; 
  greatest 
  diameter, 
  

   2 
  mm.; 
  Fig. 
  lA, 
  6.5 
  mm., 
  length; 
  greatest 
  diameter, 
  2.5 
  mm. 
  

  

  2. 
  Leptochiton 
  nexus 
  Carpenter 
  262 
  

  

  Holotype, 
  U.S.N.M., 
  No. 
  16270. 
  Length, 
  7+ 
  mm. 
  ; 
  width, 
  4.5 
  mm. 
  

   3-6. 
  Leptochiton 
  internexus 
  Carpenter 
  in 
  Pilsbry 
  262 
  

  

  Holotype, 
  U.S.N.M., 
  No. 
  30750. 
  Length, 
  4.5 
  mm.; 
  width, 
  3+ 
  mm. 
  

   7. 
  Leptochiton 
  rugatits 
  (Pilsbry) 
  263 
  

  

  U.S.N.M., 
  No. 
  30739 
  so 
  labelled 
  but 
  not 
  type. 
  Length, 
  1.3 
  mm.; 
  width, 
  7 
  mm.; 
  

   greatest 
  convexity, 
  3 
  mm. 
  See 
  enlargement 
  (PI. 
  35, 
  fig. 
  3). 
  

   8-15. 
  Cyanoplax 
  hartzvegii 
  (Carpenter) 
  264 
  

  

  Syntype, 
  Redpath 
  Mus., 
  No. 
  68. 
  Enlarged. 
  

   16-19. 
  Nuttaiina 
  flu.va 
  (Carpenter) 
  265 
  

  

  Holotype, 
  U.S.N.M., 
  No. 
  15690b. 
  Length, 
  15 
  mm.; 
  width, 
  10 
  mm.; 
  greatest 
  

   height 
  of 
  curvature, 
  3 
  mm. 
  

  

  ^ 
  

  

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