CONTENTS. 



PAGEINDEX. 



SECTION I. 

 FOSSIL REPTILIA OF THE TERTIAUY FORMATIONS. 



Order— CHELONIA. 



§ 1 • Structure and Homologies of the Carapace and Plastron 



§ 2. Family — Marina. 

 Genus — Chelone 

 Species — Chelone breviceps . 



— longiceps . 



— latiscutata 



— convexa 



— subcristata 



— planimentum 



— crassicostata 



— declivis 



— trigoniceps 



— cuneiceps . 



— subcarinata 

 Supplemental remarks on the species from Harwich 

 Summary on the genus Chelone 



§ 3. Family — Fluvialia. 

 Genus — Trionyx . 

 Species — Trionyx Henrici 



— BarbarcB . 



— incrassatus 



— marginatus 



— rivosus 



— planus 



— eircumsulcatus 



— pustulatus 



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