FOEAMINIFEEA OF THE ATLANTIC OCEAN 35 



QUINQIJELOCUUNA PARKERI (H. B. Brady), var. OCCIDENTALIS Cushman 



Quinqueloculina parkeri (H. B. Brady), var. occidentalis Cushman, Proc. U'. 

 S. Nat., Mus., vol. 59, 1921, p. 69; Publ. 311, Carnegie Instit. Washing- 

 ton, 1922, p. 68, pi. 12, fig. 3. 



Test differing from the typical in the great number of fine, trans- 

 verse, or slightly oblique ridges or crenulations, and the tendency for 

 the chambers to become squarely truncate or even tricarinate. 



This variety was originally described from the north coast of 

 Jamaica, and occurs in the Tortugas collections. The typical form of 

 the species so abundant in the Indo-Pacific does not seem to be present 

 in the tropical Atlantic. 



QUINQUELOCULINA PYGMAEA Reuss 



Heron-Allen and Earland refer a single specimen from the Clare 

 Island region of Ireland to this species.^ 



Genus MILIOLA Lamarck, 1804 



Miliola (part) Lamarck (Genotype, by designation, Miliola saxorum Lam- 

 arck), Ann. Mus., vol. 5, 1804, p. 349. 

 Quinquelocidina (part) d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 301. 

 Pentellina Munier-Chalmas and Schlumberger (genotype by designation^ 

 P. heberti Schlumberger)? Bull. Soc. G6ol. France, ser. 4, vol. 5, 1905, p. 116. 



Test in its structure similar to Quinqueloculina but the apertur'e 

 cribrate. 



Eocene. 



Apparently this genus with its cribrate aperture became extinct in 

 the Eocene. It is known from the Eocene both of Europe and 

 America. 



Genus SCHLUMBERGERINA Munier-Chalmas, 1882 



Schlumbergerina Munier-Chalmas, Genoholotype, Schlumhergerina areni- 

 phora Munier-Chalmas, Bull. Soc. Geol. France, ser. 3, vol. 10, 1882, p. 

 424. — Cushman, Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, p. 

 148. 



Miliolina (part) of authors. 



Massilina (part) of authors. 



Test typically quinqueloculine, the chambers narrowing so that 

 frequently more than five chambers may be visible from the exterior ; 

 wall calcareous, imperforate, the exterior thickly coated with sand 

 grains; aperture cribrate. 



Late Tertiary and Recent. 



The young of some of the species with arenaceous exterior fre- 

 quently assigned to Massilina are close to this. The Miliolina 

 alveoliniformis H. B. Brady described in 1879 is probably the same as 

 Munier-Chalmas' species and belongs here. This species is often 

 abundant in shallow-water tropical collections. 



8 Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 29. 



