VI CONTENTS. 



Chapter III. Osteology of the Ceratopsia — Continued. Page. 



The skull — Continued. 



The lower jaw , 39 



The predentary . : 39 



The dentary. _ 40 



The splenials _ . 41 



The angular 41 



The surangula? \ 42 



The articular : - 42 



The teeth 43 



The unworn teeth : 43 



Arrangement of teeth in the jaw. 43 



Replacement of the teeth _ 44 



Functions of the teeth 46 



The vertebral column 46 



The vertebral formula 46 



The anterior cervicals 47 



The fifth, sixth, and seventh cervicals 49 



The dorsal vertebrae 49 



The fust dorsal 50 



The second dorsal . - 50 



The third dorsal 50 



Dorsals 4 to 14 51 



The sacrum : 51 



The caudal vertebrae 53 



Ossified dorsal tendons 55 



The pelvis 56 



The ilium . . 56 



The pubis 57 



The ischium 58 



The shoulder girdle 58 



The scapula 58 



The corocoid 58 



The ribs 58 



The cervical ribs > 58 



The dorsal "ribs '.: 59 



The caudal ribs 59 



The fore limb and foot . . 59 



The humerus 60 



The ulna 60 



The radius 60 



The carpus 61 



The metacarpus 61 



The phalanges 61 



The hind limb and foot 61 



The femur 61 



The tibia - 62 



The fibula - 63 



The tarsus j - 63 



The metatarsus 63 



The phalanges 64 



The exoskeleton 64 



Chapter IV. Systematic descriptions of genera and species 66 



Method of treatment 66 



Revision of species of Judith River Ceratopsia 67 



Genera and species described by Professor Cope 67 



Dysganus 67 



D. encaustus - 67 



D. haydenianus 68 



D. bicarinatus 68 



D. peiganus 69 



Monoclonius * 70 



M. crassus - 71 



Original description 71 



Literature 71 



