318 Miscellaneous. 



Application of the anatomical facts to the foot-prints of the New Red 

 Sandstone of Connecticut. History of tlie discovery and determination 

 of the Ornithichnites : exemplified hy the Brontozouni, Steropezoum, 

 Ornithopus, and Plectropus. Eocene Ornitholites. Lithornis vultu- 

 rinus ; process of its determination. The sternum in birds : conditions 

 of its peculiarities : its relations to flight ; its more constant and im- 

 portant subservience to respiration : these involve corresponding modifi- 

 cations of the scapular arch, of the ribs, and of the vertebrae of the 

 neck, sacrum, and tail. Skull ; wing-bones, femora, tibia, metatarsus, 

 and toes. Hnlcyornis toliapicvs, Gastornis parisiensis, P?'otornis 

 glarisiensis, A^umenius Gypsorum, Tringa lloffmanni, Phcenicopterus 

 Ci'oizeti. The gigantic extinct wingless birds. Binoimis, Palapteryx, 

 and Ejjyomis. The Dodo and Solitaire. 



Lectures III. and IV. (Thursday, March 25th, and 

 Friday, March 2Uh.) 



Palaeozoic andTriassic Reptiles. — General characters of the 

 Class Reptilia. Characters of the existing Orders : 



1. Batrachia. 4. Chelonia. 



2. Ophidia. 5. Crocodilia. 



3. Lacertia. 



Relations of the Osseous structure to the low temperature and in- 

 active habits of reptiles. Characters of the Vertebrae of the different 

 orders of reptiles. Modifications of the Vertebral column in Batra- 

 chia, and conditions of the absence of true ribs in this order. 



Earliest known evidences of air-breathing Vertebrata. The Lepto- 

 pleuron of the Old Red Sandstone. Batrachian foot-prints in 

 American coal-measures. Batrachian fossils of equal antiquity. 

 Archegosarus, Dendrerpeton, Baphetes, Parabatrachus. Thecodont 

 lizards of the Permian limestones ; Palaeosaurus. The Thuringian 

 Monitor, or P rotor osauriis. Probable nature of the so-called Chei- 

 rotherian foot-prints in Triassic sandstones, and their relation to the 

 reptiles of the Labyrinthodont family. Characters and remarkable 

 dentition of that family ; its combined Batrachian and Sauroid 

 afiinities ; Cladeiodon, Belodon. Reptiles of the German 'Muschel- 

 kalk,' Nothosaums, Simosaurus, Tanystropheus, and Placodus. The 

 Rhyjichosaurus of English New Red Sandstone. The Dicynodonts, 

 probably Triassic reptiles of South Africa. 



Lectures V. and VI. (Thursday, April \5th, and Friday, 

 April \6th.) 



Oolitic Reptiles. — Extinct reptiles of the Oolitic series: 

 their numbers, diversity, and formidable character. Views of the 

 classification and affinities of reptiles, as modified by the insight 

 now gained into the forms and structure of the lost orders, genera 

 and species. 



Characters of the extinct EnaUosauria. Distinctive characters of 

 the vertebrae of the Ichthyosaurus : peculiarities of the rest of its 

 skeleton ; its dentition and integument. Indications of the structure 



