72 PROCEEDINGS OF THE NATIONAL MUSEUM vox, 77 



the chambers are much embracing. European Glohulina inaegualis 

 has a compressed and rounded test, but not as regularly circular as 

 the Japanese species. A young stage of Sigmomorphina semiteda 

 resembles the present species, but it is more compressed and invariably 

 elongated. 



Distribution. — G. D. Hanna and M. A. Hanna described the present 

 species from the Eocene in Lewis County, Wash. Japanese speci- 

 mens are from shore sand, Kobama (Sea of Japan), Province of 

 Echizen. We have a few specimens which are very similar to the 

 present species from various European Tertiary deposits : Pliocene of 

 Castel Arquato, Italy; Miocene, Burdigalien inferieur, Moulin de 

 I'Eglise, Saucats, France; and Eocene, Lutetien, Parnes (Les Boves), 

 France. A specimen from the Tortugas, off Florida in 11 fathoms, 

 is also very similar. 



GLOBULINA DENTIMARGINATA (Chapman) 



Plate 15, figures 10 a, b 



Polymorphina concava Williamson var. dentimarginata Chapman, Quart. 

 Journ. Geol. Soc, vol. 50, 1894, p. 717, pi. 34, fig. 14 a, h. — Jones and 

 Chapman, Journ. Linn. Soc. ZooL, vol. 25, 1896, p. 514, figs. 35 a, h (in 

 text). 



"Test adherent, flat on the attached and convex on the opposite 

 face, subovate in outline, and sharply pointed at both ends on the 

 upper and lower surfaces, in the central area of the test, is exhibited 

 a regular Polymorphine series, consisting of five chambers on the 

 upper surface, and surrounding this is a secondary or later growth of 

 shell material, depauperate and thin, which appears to turn back upon 

 the under surface, forming the adherent portion. The thin outer 

 flangelike portion of the test shows the septation of five flattened 

 segments. The delicate margin of the test is broken up into a fine 

 pectinate edge, and by careful observation the surface is seen to be 

 studded sparsely with minute prickles. Length, one thirty-eighth 

 inch (0.65 mm.); width, one eighty-fifth inch (0.30 mm.)." 



We have no specimen representing the present species. Consid- 

 ered from the original figures and descriptions, Glohulina dentimar- 

 ginata is quite different from Sigmomorpha concava in its arrangement 

 of chambers and can be safely separated as a good species. The 

 arrangement of chambers of the present species appears to be abnormal 

 from that of a regular Glohulina, considering this from the arrange- 

 ment of chambers, and it seems to be a specialized globular species of 

 Quadrulina, but we can not say anything definite without examining 

 the original specimen. Therefore the present species is provisionally 

 included in Glohulina. The above description is copied in full from 

 the original. 



Chapman's specimens were from the Cretaceous, Bargate beds of 

 Surrey, England. 



