ART. 6 FOKAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 15 



Arethusa was used by Fleming, Bowditch, and Thorpe, but the 

 other two genera were abandoned for a long time. At present no one 

 uses any of Montfort's three generic names because of their poor 

 and rough illustrations. To the fistulose forms three different 

 generic names were given. Those are Zborzewski's Raphanulina and 

 Apiopterina and Alth's Aulostomella, which are included in Globulina, 

 as far as the species under those genera are concerned. 



Psecadium is said to have been used by Reuss in manuscript, but 

 it was used for the first time by Neugeboren in 1856. Its first species, 

 P. simplex, is a Marginulina. Reuss's Psecadium acuminatum given 

 to Schlicht's figures ^ undoubtedly belongs to the Polymorphinidae 

 and is considered by us as a synonym of Glandulina. 



Von Schlicht's Rostrolina is considered by Brady, Parker, and 

 Jones to be placed under Polymorphina, but as is already discussed 

 by Silvestri, most of its species belong to the Ellipsoidinidae, and 

 the first species of Rostrolina, according to A. Silvestri, is Ellipso- 

 pleurostomella rostrata. The first species of Atractolina is named by 

 Reuss Psecadium acuminatum. 



Pyrulinella is given to a fusiform group having a biserial stage, 

 but its genotype species, Polymorphina lanceolata Reuss, very doubt- 

 fully belongs to the Polymorphinidae, and it resembles Virgulina, 

 and accordingly the name is dropped and the fusiform group having 

 a biserial stage is placed under Pyrulina. 



Dimorphina is an ambiguous genus, although it has been used 

 since d'Orbigny established it. D'Orbigny's species, Dimorphina 

 tuberosa, considered from Fornasini's figure, is a Marginulina. 

 Most species hitherto described under Dimorphina can be placed 

 in other genera. 



SPECIES DESCRIBED AS BELONGING TO THE POLYMORPHINIDAE 

 BUT NOT ACTUALLY POLYMORPHINIDAE 



There are m^any species which are described under the Polymor- 

 phinidae but actually do not belong to the family. D'Orbigny's 

 Polymorphina acuta and P. digitalis, both described from the Vienna 

 Basin, have been recognized by later authors as good species but 

 they are Virgulina (original and paratype specimens examined by 

 Ozawa). Reuss's P. lanceolata is used often by later authors, but 

 the first figured specimen appears to belong to Virgulina. 



Costa from 1856 to 1864 described fifteen species of the Polymor- 

 phinidae. There are two under Polymorphina, seven under Guttulina, 

 five under Globulina, and one under Aulostomella. His Polymor- 

 phina is Virgulina, his Guttulina and Globulina are mostly Bulimina^ 



« Foram. Septar. Pietzpuhl, 1870, pi. 25, flgs. 1-10. 



