ART 6 FORAMINIFERA: POLYMOEPHINIDAE — CTJSHMAN AND OZAWA 29 



covering the earlier chambers at the base; sutures depressed, distinct; 

 wall smooth, the apertural end often covered with fistulose tubes; 

 aperture produced, radiate. 



Length 0.35-0.70 mm.; breadth 0.35-0.65 mm.; thickness 0.25- 

 €.48 mm. 



Guttulina trigonula is allied to Guttulina problema and like it has the 

 chambers arranged in a quinqueloculine series, but differs from it in 

 the truncate, somewhat three-sided base. The test itself is much 

 rounded and much wider than long. Guttulina damaecornis mentioned 

 by Reuss in the same paper as the present species is undoubtedly a 

 fistulose specimen of Guttulina trigonula. 



Polymorphina glomerata Roemer '' characterized by a spheroidal 

 test composed of inflated and rounded chambers, appears to be very 

 close to Guttulina trigonula, but the figures lack details. The fact 

 also that we have no specimens in our collection that seem identical 

 has left us in doubt whether it be a valid species or a synonym of the 

 present one. 



Distribution. — Reuss recorded the present species from the Creta- 

 ceous of Luschnitz in Bohemia. Our figured specimen was obtained 

 from the lower Gault clay at Barnwell Pit, in Cambridge, England, 

 The other localities of our specimens from the Cretaceous are: 

 Maastricht, Holland; Stemmerberg, Westphalia; Hinter-Fessen near 

 Pirna, Germany; Velasco shale. Hacienda El Limon, west of Panuco, 

 Mexico. 



GUTTULINA AUSTRIACA d'Orbigny 



Plate 4, figures 3-5 



Guttulina austriaca d'Orbigny, Foram. Foss. Bass. Tert. Vienna, 1846, p. 223, 

 pi. 12, figs. 23-25. — Teequem, Mem. Soc. Geol. France, ser. 3, vol. 2, 

 1882, p. 133, pi. 13 (21), fig. 36. 



Polymorphina oblonga d'Orbigny, Foram. Foss. Bass. Tert. Vienne, 1846, 

 p. 232, pi. 12, figs. 29-31.— Terquem, Mem. Soc. Geol. France, ser. 3, 

 vol. 2, 1882, p. 145, pi. 15 (23), fig. 9.— H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 569, pi. 73, fig. 4 (not figs. 2 and 3).— 

 Chaster, First Rept. Southport Soc. Nat. Sci., 1890-91 (1892), p. 64, 

 pi. 1, fig. 13.— Bagg, U. S. Geol. Survey, Bull. 513, 1912, p. 73, pi. 20, 

 figs. 10-12.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 88, 

 pi. 37, fig. 6; Idem, Bull. 100, vol. 4, 1921, p. 268, pi. 52, fig. 3. 



Polymorphina guttata Reuss, Sitz. Akad. Wiss. Wien, vol. 62, pt. 1, 1870, 

 p. 487. — V. ScHLicHT, Foram. Septar. Pietzpuhl, 1870, pi. 30, figs. 25-32. 



Test fusiform to oblong, more or less rounded at the base, rather 

 acute at the apertural end, often botryoidal, greatest breadth usually 

 above the middle; chambers oval to clavate, slightly embracing, 

 arranged in a clockwise, quinqueloculine series, each succeeding 

 chamber removed much farther from the base; sutures depressed 

 and very distinct; wall smooth, translucent; aperture produced, 

 radiate. 



' Verst. norddeutsch. Kreide. 1840-41 .p. 97, pi. 15, fig. 19. 



