﻿PLATE 
  XV. 
  

  

  Vaqueros 
  (Lower 
  Miocene) 
  Fossils. 
  

  

  (Unless 
  otherwise 
  indicated 
  all 
  figures 
  are 
  natural 
  size.) 
  

  

  Fig. 
  la. 
  Purpura 
  vaqueroserms 
  Arnold. 
  Collection 
  of 
  Delos 
  Arnold. 
  Type. 
  Alti- 
  

   tude 
  100 
  mm 
  Aperture 
  view. 
  Lynehs 
  Mountain, 
  Monterey 
  County, 
  Cal. 
  

  

  Fig. 
  16. 
  Back 
  view 
  of 
  same 
  specimen. 
  

  

  Fig. 
  2. 
  Modiolus 
  yneziana 
  Arnold. 
  U.S.N.M. 
  165324. 
  Type. 
  Right 
  valve; 
  altitude 
  

   81mm. 
  View 
  of 
  exterior, 
  X 
  2. 
  San 
  Julian 
  ranch 
  (4504). 
  Characteristic 
  

   of 
  this 
  horizon. 
  

  

  132 
  

  

  