X ILLUSTRATIONS. 



19. Skull and Skeleton of Tmlitanus punctulatus 87 



20. Skull and Skeleton of Tuditanus longipes 90 



31. Skeleton of Tuditanus wakxjtti: A, Body; B, Leg 94 



33. A. Outline of Skull and Cranial Elements of Erpetosaurus minutus Moodie, from the Camielton Slates of 



Pennsylvania 99 



B. Outline of Skull and Cranial Elements of Erpetosaurus radiatus Cope, from the Coal Measures of Linton 99 



C. Palate of Erpetosaurus (tabulatus?), from the Coal Measures of Linton, Ohio 99 



D. Outline of Skull and Cranial Elements of Erpetosaurus acutirostris Moodie, from the Coal Measures of 

 Linton, Ohio 99 



E. Outline of Larger Part of Skeleton of Odonterpeton triangularis Moodie, from the Coal Measures of 

 Linton, Ohio 99 



F. Right Mandible of Erpetosaurus tabulatus Cope, from the Linton, Ohio, Coal Measures 99 



G. Skull Elements and Lateral-line Canals of Erpetosaurus tabulatus Cope, from the Coal Measures of Linton 99 



33. Skull of Stegops divaricata 113 



34. Microsaurian Skulls from Linton, Ohio: A, Diceratosaurus lasvis; B, Diceratosaurus robustus 119 



35. Restoration of Eoserpeton 134 



36. Restoration of Amphibamus 138 



37. Skeleton of Amphibamus grandiceps 129 



28. Probable Appearance of Amphibamus 130 



39. Skeleton of Ccphalerpeton 133 



30. Restoration of Ptyonius 140 



31. Restoration of CEstocephalus 144 



33. Vertebras of Molgophis brevicostatus, 148 



33. Fore-limb of a Member of the Molgophidae, Possibly Pleuroptyx 152 



34. A. Interclavicle of Sauropleura pauciradiata 159 



B. \je(l Clavicle of Sauropleura pauciradiata 1 59 



35. Skull and Skeleton of Saurcrpeton latithorax 164 



36. Mandible of Lcptophractus dentalus 169 



37. So-called Interclavicle of Eury thorax sublavis 1 70 



38. Skeletal Elements of Amblyodon 177 



39. Vertebne of Spondylerpeton spinatum 179 



40. Mandible of Macrerpeton deani 184 



41. Vertebra; of Eosaurus acadianus: A, Oblique Lateral View; B, Oblique View; C, Posterior View; D, Trans- 



verse Section; E and F, Microscopic Sections 188 



42. Skull and Mandible of Eobaphctes kansensis: A, Outer View of Mandible; B, Portion of Skull; C, Inner 



Surface of Mandible 191 



43. Footprints of Dromopus agilis 200 



