Bulletin io 31a 



DESCRIPTION OF SPECIES. 



o- 



PROTO^OA. 



Rhi^opoda. 



FORAMINIFERA. 



Cyclammina placenta. 



Syn. Nonionina placenta Reuss, Zeitsch. deutsch. geol. Gesell, 1851, p. 

 72, pi. V, fig. 33. 

 Halophragniiiim, placenta, Andrese, Beitrag zur Kent. Elsass. Ter- 

 tiars, Theil ii, p. 105, pi. vii, fig. 6, 1884. 



Test large, discoidal, compressed, of a snow white color, con- 

 sisting of numerous irregular chambers, about fifteen in the 

 final convolution; peripheral margin somewhat lobulated, septal 

 lines distinct, slightly depressed, irregularly curved; peripher- 

 al margin rounded; septal plane rather large, ovoidal; diam. 

 3.10 mm. 



Horizon and Locality. — Miocene, near Mullica Hill, N. J. 



Geological distribiition. — -Oligocene, and Miocene. 



In the description of the above genus b)^ Prof.H. B. Brady 

 in the Challenger Report, vol. ix, p. 351, the author states that 

 Cyclammina is unknown in the fossil state, but there can be 

 no longer any doubt about its occurrence in deposits of mid- 

 dle Tertiary age. The finely arenaceo-silicious test unaffected 

 by acids, its peculiar complex structure, and its shape, make it 

 easily recognized. 



Textuiaria abbreviata. 



Syn. Textuiaria abbreviata d'Orbigny, Foram. Foss. Vien., p. 249, pi. 

 XV, figs. 9-12 (error for 7-12), 1846. 



Test short and thick, sharply pointed at the posterior end, 

 rapidly enlarging above, laterll}^ compressed but not strongly 

 so being broadly elliptical in outline with narrowly rounded 

 margins approaching angularity. The chambers are narrow and 

 increase in size rapidl}^ towards the ultimate chamber; septal 

 lines straight; apparent as fine lines; aperture a semilunar arch 

 on the interior margin of the final segment. 



