1887.] NEW-YORK MICROSCOPICAL SOCIETY, 17 



Miliolina seminulum, Linne, sp., 26. 



Miliolina oblonga, Montagu, sp., 2. 



Miliolina venusta, Karrer, sp., 15. 



Miliolina tricarinata, d'Orbigny, sp., 16. 



Miliolina subrotunda, Montagu, i. 



Miliolina bicornis. Walker and Jacob, sp., i. 



Lagena aspera, Reuss, i. 



Cristellaria italica, Defrance, i. 



Discorbina orbicularis, Terquem, sp., 2. 



Discorbina bertheloti, d'Orbigny, 3. 



Truncatulina lobatula. Walker and Jacob, sp., 7. 



Truncatulina dutemplei, d'Orbigny, i. 



Anomalina grosserugosa, Giimbel, sp., 4. 



Anomalina ariminensis, d'Orbigny, sp., 7. 



Pulvinulina canariensis, d'Orbigny, sp., i. 



Nonionina depressula, Walker and Jacob, sp,, 2. 



Nonionina umbilicatula, Montagu, sp., 3. 



Nonionina seapha, Fichtel and Moll, sp., 10, 



Amphistegina lessonii, d'Orbigny, 2,000. 



Total, 2,106. 



From these figures I am inclined to believe that the micro- 

 scopic life in the miocene period must have exceeded the fauna 

 of our waters of the present age. 



The water in the miocene age evidently was shallow and warm, 

 as Amphistegina is not found so plentifully, only under these 

 conditions, in the tropical regions. 



The Amphistegina of the Virginia miocene bed are not so 

 large and robust as the ones from Nussdorf, but much larger 

 than the living species. , 



