THE AMERICAN NATURALIST [Vol.XLII 



gie, Nonette, Orsonnette, Malhat, Les Pradeaux, Les 

 Chauffours, Bansat, Boudes, Chi brae. La Sauvetat, Jussat, 

 Gergovia, Romagnat, Perignat, Lemdes, Cournon, Mar- 

 coin, Chaptuzat, Gannat, Saint-Menoux ; in the basin of 

 the Loire, Vaumas, Saint-Pourcain-snr-Bebre, Briennon, 

 Digoin; in the South East of France, Cereste, Manosque, 

 clay of Saint-Henri near Marseilles, les Milles near Aix, 

 Auzon near Alais ; in the South West of France, Cestayrol, 

 Saint-Sulpiee, Babastens, hill of Saint-Martin, Mot/fans, 

 Salrar/nac, Vile d'Albi, Pont-Saintc-Marie, Tournon, 

 Capellier, Les Peries, Villebramar, la M ill<x|ue, Combera- 

 tiere, Moissac, Beauville, Itier, Bourg de Visa, Montsegur, 

 etc.; in Switzerland, Blauen, La Conversion, near Lau- 

 sanne; in Italy, Cadibona in Liguria, Monteviale and 

 Zovencedo in Vicenza; in Austria, Trifail in Styria, and 

 deposits in Dalmatia; lignites of Inca (Island of Ma- 

 jorca) ; the larger part of the phosphorites. 



It seems that from now on it will be possible to distin- 

 guish at least two horizons in this important stage: the 

 lower (the principal deposits of which are given in italics 

 in the preceding list), characterized by the persistence of 

 the last representatives of Pateotheritim, of Entelodon, 

 or of Gelocus; the upper by the abundance of large-sized 

 Anthraeotherium and Acerotherium, and the sudden ap- 

 pearance of the Tapirida?. 



For the stage as a whole, the facts in regard to evolu- 

 tion and migration are as follows: 



1. Local Evolution. — Continuance of Palapotheriidae 

 (last appearance), of Rlrinocerotida 4 ( Aceratherium, Di- 

 ceratherinni), of Chalicotlieriidae (Schizotherium), of 

 Anthracotheriida? (Brachyodus, Anthracotherinm. several 



(Propala'ochu'rns, Pahvochavriis), of Ca i notheriida> (Camo- 

 therium, Plesiomeryx), of Tragulidae (last of Gelocus, 

 Prodremotherium, Lophiomeryx), of Theridomyidae (The- 

 ridomys, [ssiodoromys, Archseomys), of Cricetina 1 (Cri- 

 cetodon), of Talpida 1 ( Geotrypus), of Erinaceida? (Erina- 

 ceus), of Chiroptera (Pala?onycteris), of Creodonta (last 



