X ILLUSTRATIONS. 



19. Skull and Skeleton of Tuditanus punctulatus .... 87 



20. Skull and Skeleton of Tuditanus longipes 90 



2 1 . Skeleton of Tuditanus walcotti : A, Body ; B, Leg ; 94 



22. A. Outline of Skull and Cranial Elements of Erpetosaurus minutus Moodie, from the Cannelton 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 



23. Skull of Stegops divaricata 113 



24. Microsaurian Skulls from Linton, Ohio: A, Diceratosaurus laevis; B, Diceratosaurus robustus 119 



25. Restoration of Eoserpeton 1 24 



26. Restoration of Amphibamus 128 



27. Skeleton of Amphibamus grandiceps 129 



28. Probable Appearance of Amphibamus 130 



29. Skeleton of Cephalerpeton 1 33 



30. Restoration of Ptyonius 140 



31. Restoration of CEstocephalus 144 



32. Vertebrae of Molgophis brevicostatus 148 



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



34. A. Interclavicle of Sauropleura pauciradiata 159 



B. Left Clavicle of Sauropleura pauciradiata 1 59 



35. Skull and Skeleton of Saurerpeton latithorax 164 



36. Mandible of Leptophractus dentatus 169 



37. So-called Interclavicle of Eurythorax sublsevis 1 70 



38. Skeletal Elements of Amblyodon 177 



39. Vertebrae of Spondylerpeton spinatum 1 79 



40. Mandible of Macrerpeton deani 184 



41. Vertebrae 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 Eobaphetes kansensis: A, Outer View of Mandible; B, Portion of Skull; C, Inner 



Surface of Mandible 191 



43. Footprints of Dromopus agilis 200 



