90 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



Basin (the specific name was changed by d'Orbigny to subcompressa 

 because it is preoccupied by PhilHps), and we can find no reason for 

 separating them. 



Holotype specimens of Guttulina elongata and Polymorphina amoena, 

 both described by Karrer from Nussdorf in the Vienna Basin, were 

 examined by Ozawa, who found that they are nothing but Poly- 

 morphina subcompressa d'Orbigny. They should be included in 

 Pseudopolymorphina ligua. 



The original specimen of Polymorphia compressa is lost and the 

 paratype specimens are mostly Virgulina with one specimen resem- 

 bling the figure of Polymorphina compressa. 



Polymorphina inequalis d'Orbigny, figured hj Fornasini in 1900, 

 has a rather broad test, but it is not different from the present species 

 in other respects. 



Distribuiion. — Pseudopolymorphina ligua is rare in the Oligocene, 

 but common in various Miocene and Pliocene deposits in Europe. 

 We have specimens from the following localities: 



Pliocene. — Belgium, Crag noir, Antwerp. England, Crag, Sutton; 

 Aldeburg, Suffolk. 



Miocene. — Austria, Tortonian, Amphistegina marl, Grunes Kreuz, 

 Nussdorf, near Vienna. 



Oligocene. — Germany, Ahnatal, near Cassel. 



PSEUDOPOLYMOKPHINA NOVANGLIAE (CnsJiman) 



Plate 23, figures 1, 2 



Polymorphina lactea (Walker and Jacob) var. novangliae Cushman, Bull. 

 104, U. S. Nat. Mus., pt. 4, 1923, p. 146, pi. 39, figs. 6-8. 



Test elongated, more or less compressed, tapering toward the base, 

 either acute or obtuse at the initial end; chambers longer than broad, 

 embracing, arranged at first in a nearty contraclockwise, quin- 

 queloculine series, later becoming more or less biserial; sutures but 

 little depressed, generally distinct; wall smooth, often mth fistulose 

 tubes at the apertural end; aperture radiate. 



Length 1.15-1.95 mm.; breadth 0.55-0.65 mm.; thickness 0.20- 

 0.35 mm. 



The present species differs from Pseudopolymorphina ligua in the 

 rounded chambers and slightly depressed sutures which give the 

 test a more compact appearance. Its more or less quinqueloculine 

 arrangement of the early chambers is always contraclockwise instead 

 of clock v/ise, as in P. ligua. Its apertural end is often covered by 

 fistulose tubes. Williamson's Polymorphina lactea var. acuminata is 

 an elongated test having an acute initial end, and the arrangement of 

 chambers is similar to that of the present species and is closely related 

 to it. 



