56 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



Distribution.— Rsithev common in various Tertiary deposits in 

 Europe and widely distributed geographically in the Recent oceans. 

 Our specimens are obtained from the following localities : 



Recent.— Atlantic, Albatross D2035, 1,362 fathoms; D2038, 2,033 

 fathoms; D2042, 1,555 fathoms; D2109, 142 fathoms; D2174, 

 1,594 fathoms; D2228, 1,582 fathoms; D2677, 478 fathoms; 

 D2678, 731 fathoms, all off the eastern coast of the United States; 

 D2160, 167 fathoms off Cuba. Pacific, Nero Stations 170, 1,990 

 fathoms; 1287, 1,606 fathoms; 1,299, 1,817 fathoms; 1300, 1,529 

 fathoms; 1312, 1,552 fathoms; 1316, 1,649 fathoms; 1324, 1,915 

 fathom.s. There are specimens also from off Alaska. 



Pleistocene. — Leda Clay, Province of Quebec, Canada. 



Miocene. — Hungary, Kostej, Banat. Austria, Baden, Vienna 

 Basin. 



Oligocene. — Germany, Ahnatal, near Cassel; Hermsdorf, near Ber- 

 lin; Pietzpuhi; Hildesheimer Wald, Dickholzen, Hannover; Lobsann; 

 Doberg, near Biinde. 



PYRULINA CYLINDROIDES (Roemer) 



Plate 14, figures 1-5 



Polymorphina cylindroides Roemer, Neues Jahrb. f. Min., etc., 1838, p. 385, 

 pi. 3, fig. 26. — H. B. Brady, Parker, and Jones, Trans. Linn. Soc, 

 vol. 27, 1870, p. 221, pi. 39, figs. 6 a, b, c. 



Polymorphina fusiformis Cushman (not Roemer), Bull. Amer. Assoc. Petr. 

 GeoL, vol. 10, 1926, p. 604, pi. 20, fig. 14. 



Test elongate, fusiform to cylindrical, acuminate toward both 

 extremities, almost circular in cross section; chambers elongate, not 

 much embracing, arranged in a nearly triserial series, tending to be- 

 come biserial, each succeeding chamber farther removed from the 

 base; sutures but little depressed; wall smooth; aperture radiate. 



Length 0.50-1.10 mm.; breadth 0.18-0.32 mm.; thickness 0.15- 

 0.30 mm. 



As Roemer's figures of the present species are rather obscure, owing 

 to their small size and poor execution, we have endeavored to get a 

 specimen which is most nearly like his figures among our abundant 

 specimens from the German Oligocene of various localities. The 

 specimen figured in the plate is considered by us as typical of Roemer's 

 Polymorphina cylindroides, and the above description is written in 

 accordance with our specimen. Pyrulina cylindroides of our diagnosis 

 was generally identified with Poly7norphina jusiformis, from which 

 it is easily separable by its elongate chambers. 



Cretaceous Pyrulina porrecta Reuss is almost impossible to distin- 

 guish from the present species, and as far as the material examined 

 is concerned there is no distinction between them. From Cretaceous 

 Pyrulina acuminata it is easily separated by its elongate chambers 

 but little embracing. 



