FOEAMINIFERA OF THE ATLANTIC OCEAN 



45 



So little is known of this genus that it is difficult to specifically 

 place specimens. Brady's specimens figured in the Challenger Report 

 are from the Cape Verde Islands. Chapman's figures seem to be 

 different in shape and surface characters from those of Brady and 

 from those found at the Tortugas and Porto Rico. The specimens 

 from the West Indian region are aU of the same species, but consist 

 of a rectilinear series only, and all appear to be broken. One specimen 

 shows two tubular orifices at one end instead of one as is usual. 

 Specimens were rare at all stations. I did not find it at Bermuda. 



Monalysidium politum — Material examined 



Subfamily 2. Archaiasinae 



Test discoid, the early chambers spiral and simple, later ones 

 divided into chamberlets, later stages variously involute. 



Genus FALLOTIA H. Douville, 1902 



Fallotia H. Douvill^, Bull. Soc. G6ol. France, ser. 4, vol. 2, 1902, p. 298.— 

 CusHMAN, Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, p. 218. 



Genoholotype. — Fallotia jacquoti H. Douville. 



Test discoid, nummulitoid throughout the growth, the growing 

 edge always peripheral; chambers involute, V-shaped, divided into 

 chamberlets. 



Upper Cretaceous. 



Genus MEANDROPSINA Munier-Chalmas, 1899 



Meandropsina Munieb-Chalmas, in Schlumberger, Bull. Soc. Geol. France, 

 ser. 3, vol. 27, 1899, p. 336. — Cushman, Special Publ. No. 1, Cushman 

 Lab. Foram. Res., 1928, p. 220. 



Genoholotype. — Meandropsina vidali Schluinberger. 



Test discoid, the growing edge variously meandering over the 

 flattened faces of the test; chambers with many chamberlets; apertures 

 rounded, in linear rows. 



Upper Cretaceous. 



