European or Smith river (Deep river) species. Tliero is also a tooth 

 like that of Chalicotherium. 



I give below a table complete as I can at present make it, show- 

 ing the faunas of the four different horizons of the Neocene of Mon- 

 tana. The lists under Deep River beds are taken from Scott's Mam- 

 malia of the Deep River Beds.* 



White River in 



various parts of 



Montana 



Castor nebrascen- 



sis, 

 Hyaenodon, 



Hyracodon, 



MetamynodonV 

 Aceratheriuni, 

 Colodon 



dakotensis, 

 Colodon procus- 



pidatus, 

 Titanotherium, 

 Mesohippus, 



Oredon culbert- 



soni, 

 O. gracilis, 



Agrioclioerus, 



Poebrotheriura, 



Turtles, 



Fishes, 



Snails, 



Stenoflber Mon 

 tanus, 



Cynodesmus 

 thooides, 



Caenopus, 



Miobippus anceps 

 M. annectens ? 

 M. equiceps'? 



Mesoreodon 

 chelonyx, 

 M. intermedius, 



Deep River, Montana 



Lower 



Poebrotheriura, 



Hypertragulus 

 calcaratus, 



Upper 



Canis? anceps, 



Chalicotherium':' 



Aphelops, 



Ancbitberium, 

 . equinum 

 Miobippus, 

 Desmatippus 



crenidens, 

 Protobippus 



sejunctus, 

 P. insignis, 

 Merychyus 



zygomaticus. 

 M. pariogonus, 

 Merycocboerus 



montanus, 

 Cyclopidius 



simus, 

 C eniydinus, 

 C. incisivus, 

 Pithecistes 



decedens, 

 P. brevifacies, 

 P. heterodon, 

 Protolabis, 



Mastodon 

 proavus, 



Loup Fork of 



Madison Valley 



Montana 



Sciurus. Mus? 

 Castor, 

 Fells, 

 Aelurodon 



saevus. 

 Can Is, 

 Mustela, 



CbalicotberiumV 

 Aphelops, 

 Anchitherium 



minimus. 

 Protobippus 



speciosum, 

 P. fossulatus, 

 P. sejunctus, 

 Hlppotberium 



isonesum, 

 H. relictum, 



Merycochoenis 



altiranuis, 

 M. madisonius. 

 M. compressidens, 

 Dlcolytes, 

 Gomphotherium 



serus, 

 Protolabis monta- 



nus, 

 Procamelus 



madisonius, 

 P. occidentalis? 

 P. lacustris, 

 Blastomeryx 



gemmifer, 

 Cosonyx necatus 

 C. furcatus, 

 C. agilis, 

 Palaeomeryx 



americanus, 

 P. madisonius. 

 Mastodon, 

 Testudo 



nebrascensis. 

 Birds, 

 Claras. 

 Fossil wood. 



•Am. Phil. Soc. Oct.. 1893. 



