GEOLOGICAL EANGE '255 



he referred to more recent types, although the general 

 surface of the tests, as well as the ornamentation, is 

 much coarser. 



In sections of the Wenlock Limestone of the 

 Midlands the writer has frequently noticed small 

 forms of Lageme, and he has lately described some 

 species belonging to the genera HijperamTnina and 

 StacJieia from the Wenlock Series of Gotland. The 

 latter genus has also been obtained by A^ine from the 

 Wenlock shales of England, and described by him 

 under the name of Psaimnosiplion. 



The Upper Silurian of Waldron (Indiana) has 

 yielded Terquem four species of Placopsilina, which 

 were found attached to crinoid stems. 



The same author also found casts of Foramini- 

 fera, which he referred to Lagenulina, CristeUaria, 

 OrhuUna, Glohigerina, and Fusulina, in Devonian 

 rocks at Paffrath, in the Eifel. This appears to be 

 the only record of Foraminifera occurring in 

 Devonian strata in any country. The absence of 

 these organisms is very remarkable, for the condi- 

 tions under which the deposits of Devonian age with 

 the marine facies were laid down seem to be espe- 

 cially favourable for the existence of Foraminifera. 

 The usual concomitants of foraminiferal deposits 

 are greatly in evidence in Devonian rocks, such as 

 corals, ostracoda, and oolitic-granules, but neverthe- 

 less the Foraminifera are strangely wanting. 



This singular paucity of Foraminifera in the 

 Devonian strata is strongly emphasised by the appa- 

 rently sudden appearance of a large number of genera 



