﻿PLATE 
  XXI. 
  

  

  Fernando 
  (Pliocene) 
  Gasteropoda. 
  

   (Unless 
  otherwise 
  indicated 
  figures 
  are 
  natural 
  size.) 
  

  

  Fig. 
  1. 
  Trochita 
  radians 
  Lamarck. 
  U.S.N.M. 
  165310. 
  Maximum 
  diameter 
  of 
  fragment 
  

  

  20 
  nun. 
  View 
  of 
  top,X2. 
  Fugler 
  Poinl 
  asphalt 
  mine, 
  near 
  Gary 
  (4475). 
  

  

  Characteristic 
  of 
  the 
  upper 
  Miocene 
  and 
  lower 
  Pliocene 
  of 
  this 
  region. 
  

   Fig. 
  2. 
  Prime 
  oregonensis 
  Redfield 
  (young). 
  U.S.N.M. 
  165262. 
  Altitude 
  46 
  mm. 
  

  

  Apeiture 
  view. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Also 
  known 
  recent. 
  

   Fig. 
  •*>. 
  Lunatia 
  lewisii 
  Gould. 
  U.S.N.M. 
  165264. 
  Young 
  specimen; 
  altitude 
  23 
  mm. 
  

  

  Aperture 
  view, 
  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Also 
  known 
  recent. 
  

   Fig. 
  4. 
  Thalotia 
  caffea 
  Gabb. 
  U.S.N.M. 
  165298. 
  Latitude 
  29 
  mm. 
  Back 
  view. 
  

  

  Fugler 
  Point 
  asphalt 
  mine, 
  near 
  Gary 
  (4475). 
  Also 
  known 
  recent. 
  

   Fig. 
  5. 
  Thalotia 
  caffea 
  Gabb. 
  U.S.N.M. 
  165297. 
  Latitude 
  of 
  fragment 
  21 
  mm. 
  View 
  

  

  of 
  side 
  of 
  fragment, 
  slightly 
  tilted 
  up. 
  Same 
  locality 
  as 
  fig. 
  4. 
  

   Fig. 
  6. 
  Lymnsea 
  alamosensis 
  Arnold. 
  U.S.N.M. 
  165426. 
  Type. 
  Altitude 
  6 
  nun. 
  

  

  Aperture 
  view, 
  X 
  6. 
  Fresh 
  -water 
  beds, 
  1 
  mile 
  southeast 
  of 
  bench 
  mark 
  

  

  425, 
  Los 
  Alamos 
  Valley. 
  

   Fig. 
  7. 
  Lymnsea 
  alamosensis 
  Arnold. 
  U.S.N.M. 
  165426. 
  Young 
  specimen: 
  altitude 
  

  

  3.5 
  mm. 
  Same 
  locality 
  as 
  fig. 
  6. 
  

   Fig. 
  8. 
  Cadulus 
  fusiformis 
  Sharp 
  and 
  Pilsbry. 
  U.S.N.M. 
  165267. 
  Longitude 
  10 
  

  

  mm. 
  Side 
  view, 
  X 
  3. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Known 
  also 
  recent. 
  

   Fig. 
  9. 
  Cancellaria 
  craufordiana 
  T>a\\ 
  var. 
  fugleri 
  Arnold. 
  U.S.N.M. 
  165322. 
  Type. 
  

  

  Altitude 
  22.5 
  mm. 
  Aperture 
  view, 
  X 
  2. 
  Fugler 
  Point 
  asphalt 
  mine, 
  

  

  near 
  Gary 
  (4475). 
  Characteristic 
  of 
  this 
  horizon. 
  

   Fig. 
  10. 
  Ocinebra 
  micheli 
  Ford 
  var. 
  waldorfensis 
  Arnold. 
  U.S.N.M. 
  165261. 
  Type. 
  

  

  Altitude 
  11 
  mm. 
  Aperture 
  view. 
  X 
  3. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  

   Fig. 
  11. 
  Turritella 
  cooped 
  Carpenter. 
  U.S.N.M. 
  165273. 
  Altitude 
  34 
  mm. 
  Aper- 
  

   ture 
  view, 
  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Common 
  in 
  the 
  Pliocene 
  

  

  and 
  Pleistocene. 
  

   Fig. 
  12. 
  Drillia 
  waldorfensis 
  Arnold. 
  U.S.N.M. 
  165270. 
  Type. 
  Altitude 
  18.5 
  mm. 
  

  

  Aperture 
  view 
  of 
  imperfect 
  specimen, 
  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  

  

  Characteristic 
  of 
  this 
  horizon. 
  

   Drillia 
  johnsoni 
  Arnold. 
  U. 
  S. 
  N.M. 
  165263. 
  Altitude 
  34 
  mm. 
  Back 
  view, 
  

  

  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Also 
  found 
  fossil 
  at 
  San 
  Pedro. 
  

   . 
  Neverita 
  recluziana 
  Petit. 
  U.S.N.M. 
  165323. 
  Altitude 
  35 
  mm. 
  Aperture 
  

  

  view. 
  Fugler 
  Point 
  asphalt 
  mine 
  near 
  Gary 
  (4475). 
  Also 
  known 
  

  

  recent. 
  

   . 
  View 
  of 
  base 
  of 
  same 
  specimen. 
  

   Neverita 
  recluziana 
  Petit. 
  U.S.N.M. 
  165299. 
  Altitude 
  20 
  mm. 
  Aperture 
  

  

  view, 
  X 
  2. 
  Fugler 
  Point 
  asphalt 
  mine, 
  near 
  Gary 
  (4475). 
  Also 
  known 
  

  

  recent. 
  

  

  Natica 
  clausa 
  Broderip 
  and 
  Sowerby. 
  U.S.N.M. 
  165269. 
  Altitude 
  21 
  mm. 
  

   Aperture 
  view, 
  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Also 
  known 
  recent. 
  

  

  Nassa 
  waldorfensis 
  Arnold. 
  U.S.N.M. 
  165272. 
  Type. 
  Altitude 
  13 
  mm. 
  

   Aperture 
  view, 
  X 
  2. 
  Waldorf 
  asphalt 
  mine 
  (4473). 
  Characteristic 
  of 
  

   this 
  horizon. 
  

   Fig. 
  18. 
  Drillia 
  graciosana 
  Arnold. 
  U.S.N.M. 
  165309. 
  Type. 
  Altitude 
  14 
  mm. 
  

   Aperture 
  view. 
  X 
  3. 
  Graciosa 
  Ridge, 
  near 
  Orcutt 
  (4476). 
  Character- 
  

   istic 
  of 
  this 
  horizon. 
  

  

  144 
  

  

  Fig. 
  

  

  13. 
  

  

  Fig. 
  

  

  14a 
  

  

  Fig. 
  

  

  L46 
  

  

  Fig. 
  

  

  15. 
  

  

  Fig. 
  

  

  16. 
  

  

  Fig. 
  

  

  17. 
  

  

  