ART. 6 FORAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 143 



Holotype. — (Cushman Coll. No. 11882.) From the upper Pliocene 

 of Terao Miura, Japan. We have a single specimen from Albatross 

 D4807 off Japan. 



In its contraclockwise sigmoid arrangement of chambers and the 

 general outline of the test it is similar to Sigmoidella plummerae from 

 the Eocene of North America. However, compared with the American 

 species, it is much more compressed, with a very angulate periphery 

 and a thinner wall. 



When we described Sigmoidella elegantissima in our recent paper 

 we remarked that we had examined very many specimens which 

 showed the sigmoid series of chambers clockwisely arranged, and a 

 single specimen was found with a contraclockwise arrangement. Now 

 we are convinced that this single specimen is not Sigmoidella elegan- 

 tissima, but is quite distinct from that species in its much compressed 

 test and more acute apertural end. This determination is confirmed 

 by the occurrence of specimens having a contraclockwise arrangement 

 of chambers in the Japanese late Tertiary. 



The specific name is given for Miss Margaret S. Moore, who made 

 all the drawings for the figures in this paper. 



Genus GLANDULINA d'Orbigny, 1826 



GLANDULINA LAEVIGATA d'Orbign? 



Plate 40, figures 1 a, b 



Nodosaria {Glandulina) laevigata d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, 



p. 252, No. 1, pi. 10, figs. 1-3. 

 Glandulina laevigata d'Orbigny, Foram. Foss. Bass. Tert. Vienne, 1846, p. 29, 



pi. 1, figs. 4, 5. 



Test fusiform the initial end very acute and often with spine in the 

 microspheric form, obtuse in the megalospheric form, circular in 

 cross section; chambers inflated, much overlapping, arranged at 

 first in a biserial series, abruptly becoming uniserial in the micro- 

 spheric form, entirely uniserial in the megalospheric form; sutures 

 not depressed, distinct; wall smooth, rather thick; aperture radiate. 



Tiiere are at least two kinds of Glandulina; this one is derived from 

 Pyrulina, and the other from Marginulina. Therefore it is almost 

 impossible to give any synonymy without examining the actual speci- 

 mens. D'Orbigny listed the present species from the Adriatic Sea, 

 Tertiary of the environs of Siena, and Tertiary of the Vienna Basin. 

 We have examined abundant specimens from the last two localities 

 and found that d'Orbigny 's G. laevigata is evidently related to Pyru- 

 lina. Such specimens figured by d'Orbigny in the Tableau and also 

 in the Vienna Basin monograph have invariably an early stage con- 

 sisting of biserial chambers. 



