﻿LIST 
  OF 
  ILLUSTRATIONS 
  XIII 
  

  

  The 
  adaptive 
  modifications 
  and 
  the 
  taxonomic 
  value 
  of 
  

   the 
  tongue 
  in 
  birds 
  

  

  By 
  Leon 
  L. 
  Gardner 
  

  

  Facing 
  page 
  

  

  1. 
  Series 
  illustrating 
  multiple 
  tubular 
  tongues, 
  modifications 
  of 
  a 
  general- 
  

  

  ized 
  type 
  pattern 
  34 
  

  

  2. 
  Tongues 
  adaptively 
  modified 
  for 
  an 
  omnivorous 
  diet, 
  fish 
  fare, 
  rap- 
  

  

  torial 
  feeding, 
  or 
  food 
  strained 
  from 
  water 
  35 
  

  

  3. 
  Spearing 
  tongues, 
  tongues 
  of 
  seed 
  and 
  fruit 
  feeders, 
  flower 
  frequenters, 
  

  

  and 
  rudimentary 
  types 
  36 
  

  

  4. 
  Tongues 
  of 
  various 
  water 
  birds 
  37 
  

  

  5. 
  Tongues 
  of 
  various 
  birds 
  38 
  

  

  6. 
  Tongues 
  of 
  various 
  birds 
  39 
  

  

  7. 
  Tongues 
  of 
  Gruiformes 
  and 
  Charadriiformes 
  40 
  

  

  8. 
  Tongues 
  of 
  various 
  birds 
  41 
  

  

  9. 
  Tongues 
  of 
  various 
  birds 
  42 
  

  

  10. 
  Tongues 
  of 
  Caprimulgi 
  43 
  

  

  11. 
  Tongues 
  of 
  Passeriformes 
  44 
  

  

  12. 
  Tongues 
  of 
  Passeriformes 
  45 
  

  

  13. 
  Tongues 
  of 
  Passeriformes 
  46 
  

  

  14. 
  Tongues 
  of 
  Passeriformes 
  47 
  

  

  15. 
  Tongues 
  of 
  Passeriformes 
  48 
  

  

  16. 
  Tongues 
  of 
  Passeriformes 
  49 
  

  

  A 
  REVISION 
  OF 
  THE 
  INSECTS 
  OF 
  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  

  

  By 
  Preston 
  W. 
  Mason 
  

  

  1-18. 
  Aphids 
  of 
  the 
  genus 
  Amphorophora 
  74-91 
  

  

  Studies 
  on 
  the 
  Cyclostomatous 
  Bryozoa 
  

   By 
  Ferdinand 
  Canu 
  and 
  Ray 
  S. 
  Bassler 
  

  

  1-31. 
  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  94-124 
  

  

  Three 
  new 
  land 
  shells 
  from 
  Mexico 
  

  

  By 
  Paul 
  Bartsch 
  

  

  1. 
  New 
  land 
  shells 
  from 
  Mexico 
  6 
  

  

  FORAMINIFERA 
  OF 
  THE 
  GENERA 
  SlPHOGENERINA 
  AND 
  PAVONINA 
  

  

  By 
  Joseph 
  A. 
  Cushman 
  

  

  1-5. 
  Species 
  of 
  Siphogenerina 
  24 
  

  

  6. 
  Species 
  of 
  Pavonina 
  24 
  

  

  Asymmetry 
  in 
  the 
  skulls 
  of 
  mammals 
  

   By 
  A. 
  Brazier 
  Howell 
  

  

  1. 
  Skull 
  of 
  monkey, 
  Lasiopyga 
  griseoviridis 
  18 
  

  

  2. 
  Skull 
  of 
  monkey, 
  Lasiopyga 
  griseoviridis 
  18 
  

  

  3. 
  Skull 
  of 
  gorilla 
  18 
  

  

  4. 
  Teeth 
  and 
  skull 
  of 
  gorilla 
  18 
  

  

  5. 
  Skulls 
  of 
  gorilla 
  and 
  sea 
  lion 
  18 
  

  

  