ILLUSTRATIONS

PAGE
Alligator Mississippiensis. (In color.)[Frontispiece]
FIGURE
[A].Skull of Belodon5
[1].Map Showing the Present Distribution of Crocodilia6
[2].Heads of American Alligator and CrocodileFacing 7
[3].Alligator Joe in the EvergladesFacing 10
[4].Alligator Hunter in the OkefinokeeFacing 10
[5].Nest of C. PorosusFacing 21
[6].Jackson SloughFacing 21
[7].A Typical Alligator HoleFacing 23
[8].Alligator Nest, Made Chiefly of GrassFacing 25
[9].Alligator Nest, Made Chiefly of FlagsFacing 27
[10].Two Species of Caiman: Broad-Nosed Caiman,Spectacled CaimanFacing 35
[11].Two African Crocodiles: Nile Crocodile,West African CrocodileFacing 39
[12].Salt Water CrocodileFacing 41
[13].Skull of Gavial, Ventral ViewFacing 43
[14].Skull of Gavial, Lateral ViewFacing 43
[15].Alligator SkinsFacing 46
[16].Entire Skeleton of Crocodile50
[17].First Four Cervical Vertebræ of Crocodile52
[18].Thoracic and Sacral Vertebræ of Crocodile55
[19].Dorsal View of Skull of AlligatorFacing 60
[20].Ventral View of Skull of AlligatorFacing 63
[20A].Longitudinal Section of Tooth of CrocodileFacing 66
[21].Lateral View of Skull of Alligator69
[22].Posterior View of Skull of AlligatorFacing 70
[23].Sagittal Section of the Skull of Alligator71
[24].Dorsal View of Lower Jaw of AlligatorFacing 74
[25].The Hyoid Apparatus77
[26].The Sternum and the Associated Membrane Bones79
[27].The Pectoral Girdle and Anterior Limb82
[28].The Pelvis and Sacrum85
[29].The Posterior Limb87
[I].Plate I. The Shoulder MusclesFollowing 130
[II].Plate II. The Muscles of the Anterior RegionFollowing 130
[III].Plate III. The Muscles of the Posterior RegionFollowing 130
[IV].Plate IV. The Muscles of the Posterior RegionFollowing 130
[V].Plate V. The Muscles of the Posterior RegionFollowing 130
[30].The Brain of the AlligatorFacing 132
[31].The Brachial Plexus of C. Acutus140
[32].The Crural Plexus of A. Mississippiensis142
[33].Interior of the Mouth of the AlligatorFacing 151
[34].The Digestive System of the Alligator152
[35].Outline of the Digestive Tract of the Alligator158
[36].Covering of the Anterior Region of the Tongue160
[37].Covering of the Posterior Region of the Tongue161
[38].Gland from the Posterior Region of the Tongue162
[39].Gland from the Posterior Region of the Tongue164
[40].Covering of the Roof of the Mouth166
[41].Transsection of the Anterior Region of the Œsophagus169
[42].Transsection of the Posterior Region of the Œsophagus170
[43].Epithelium of Anterior Region of Œsophagus172
[44].Epithelium of Anterior Region of Œsophagus173
[45].Transsection of Wall of Pyloric Stomach176
[46].Glands of Fundus of Stomach177
[47].Transsection of Wall of Anterior Region of Small Intestine181
[48].Transsection of Wall of Middle Region of Small Intestine182
[49].Transsection of Wall of Posterior Region of Small Intestine183
[50].Mucosa of the Anterior Region of Small Intestine184
[51].Transsection of the Wall of the Middle Region of the Small Intestine185
[52].Transsection of the Wall of the Anterior Region of the Rectum186
[53].Epithelium of the Anterior Region of the Rectum187
[54].Female Urogenital System of Alligator193
[55].Male Urogenital System of AlligatorFacing 195
[56].Male Organ of AlligatorFacing 195
[57].Respiratory Organs of Alligator198
[58].Heart of AlligatorFacing 202
[59].Veins of the Posterior Region of Alligator204
[60].Veins of the Anterior Region of the Alligator209
[61].Arteries of the Posterior Region of the Alligator213
[62].Arteries of the Anterior Region of the Alligator215
[VI].-[XXVIII].Plates VI to XXVIII. A Series of Figures to Illustrate the Development of the American AlligatorFollowing 342

THE ALLIGATOR AND
ITS ALLIES

CHAPTER I
THE BIOLOGY OF THE CROCODILIA