92 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



Eolotype of variety. — (Cushman Coil. No. 11665.) From Kabama 

 (Sea of Japan), Province of Eciiizen, Japan. Paratypes in collection 

 of Geological Institute, Imperial University of Tokyo, Japan. 



It does not occur with the typical form and is only found as a 

 Recent form. 



We have a number of specimens Irom the shore sand at Kobama 

 (Sea of Japan), in Province of Echizen. There is also a Recent 

 specimen from Albatross Station D5311 in 88 fathoms, China Sea, off 

 Hongkong. 



PSEUDOPOLYMOKPHINA STRIATA (Bagg) 



Plate 23, figures 5 a-c 



Polymorphina compressa var. striata Bagg, Marjdand GeoL Survej^, Miocene, 



1904, p. 476, pi. 133, fig. 2. 

 Polymorphina regina Bagg, Maryland GeoL Survey, Miocene, 1904, p. 478, 



pi. 133, fig. 7. 

 Polymorphina compressa Bagg, Maryland GeoL Survey, Miocene, 1904, p. 



476, pi. 133, fig. 1. 



Test compressed, elongated, base rounded; chambers longer than 

 broad, not much embracing, arranged at first in a nearly contra- 

 clockwise, quinqueloculine series, later becoming regularly biserial 

 with the chambers alternating; sutures slightly depressed, distinct; 

 wall marked with fine longitudinal costae, typically covering the 

 entire test; aperture radiate. 



Adult specimen, length 1.30-1.60 mm.; breadth 0.42-0.50 mm.; 

 thickness 0.18-0.20 mm. 



The present species is different from d'Orbigny's Polymorphina 

 compressa in its arrangement of the early chambers, which is the same 

 as that of P. novangliae. From P. novangliae it differs in the depressed 

 sutures and more compressed test. The ornamentation of the wall 

 of the test is not always constant, and often a few of the last chambers 

 are without striations. 



Distribution. — We have abundant specimens of this species from 

 the Miocene, Choptank formation, 2% miles below Governor Run, 

 Chesapeake Bay, Md.; from 1 mile below Governor Run, and from 

 Point of Rocks, about lYz miles below Flag Pond, Chesapeake Bay, 

 Md. 



PSEUDOPOLYMORPHINA SOLDAND (d'Orbigny) 



Plate 23, figures 6-8 



Orthoceratia tuberosa Soldani, Testaceographia, vol. 1, pt. 2, 1791, p. 99, 

 pL, fig. 107 n n. 



Polymorphina soldanii d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 265, No. 

 12. — FoRNASiNi, Mem. Accad. Sci. Istit. Bologna, ser. 5, vol. 8, 1899- 

 1900 (1900) , p. 388, fig. 38 (in text) . — H. B. Bkadt, Parker, and Jones, 

 Trans. Linn. Soc, vol. 27, 1870, p. 235, pi. 40, fig. 20.— Bagg, U. S. 

 GeoL Survey, Bull. 513, 1912, p. 74, pi. 19, fig. S. 



