FORAMINIFERA OF THE ATLANTIC OCEAN 



7a 



PYRGO SERRATA (L. W. Bailey) 



Biloculina serrata L. W. Bailey, Boston Journ. Nat. Hist., vol. 7, 1862, p. 

 350, pi. 8, fig. E. — ScHLUMBERGER, Mem. Soc. Zool. France, vol! 4, 1891^ 

 p. 163, pi. 9, figs. 50, 51, figs. 6, 7 in text.— Goes, Kongl. Svensk. Vet' 

 Akad. Handl., vol. 25, No. 9, 1894, pi. 25, fig. 926; Bull. Mus. Comp. Zool., 

 vol. 29, 1896, p. 87.— Chapman, Subantartic Islands of New Zealand, 1909, 

 p. 314.— Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 994.— 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 75, pi. 29, fig. 2; Bull. 

 100, U. S. Nat. Mus., vol. 4, 1921, p. 471, pi. 95, figs. 3 a, 6.— Yabe and 

 Hanzawa, Jap. Journ. Geol. Pal., vol. 4, 1925 (1926), p. 49.— Cushman,. 

 Bull. Scripps Instit. Oceanography, Tech. Ser., vol. 1, 1927, p. 140 pi 2 

 fig. 3. ' 



Biloculina depressa d'Orbigny, var. serrata H. B. Brady, Rep. Voy. Challen- 

 ger, Zoology, vol. 9, 1884, p. 146, pi. 3, figs. 3 a-c— A. Silvestri, Mem. 

 Accad. Pont. Nuovi Lincei, vol. 9, 1893, p. 185, pi. 4, fig.5. —Chapman,. 

 Proc. Zool. Soc. London, 1895, p. 7.— Flint, Ann. Rep't. U. S. Nat. Mus., 

 1897 (1899), p. 294, pi. 40, fig. 2.— Chapman, Journ. Linn. Soc. Zool., vol. 

 30, 1910, p. 396. — Schubert, Abhandl. Geol. k. k. Reichs., vol. 20, 1911, 

 p. 122. — Heron-Allen and Earland, British Antarctic Exped., Zoology, 

 vol. 6, 1922, p. 63; Journ. Linn. Soc. Zool., vol. 35, 1924, p. 602. 



Test in front view nearly circular, central portion tumid, compressed 

 toward periphery forming a carina which is deeply serrate, the mid- 

 dle of the margin opposite the aperture with a deep sinus, serrations 

 less deep toward the apertural end; wall smooth, often polished; 

 aperture subcircular with a narrow neck, usually not exserted, tooth 

 strongly bifid. 



Diameter up to 2 millimeters. 



This is another deep water species well distributed in all the great 

 ocean basins. 



Brady described this as a variety under the name serrata in 1884 

 but the name had been used in 1862 for the same form by L. W. Bailey 

 in the reference given above. 



Pyrgo serrata — Material examined 



PRYGO COMATA (H. B. Bjady) 



Plate 19, Figure 8 



Biloculina comata H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 144, pi. 3, figs. 9 a, b. — Schlumberger, M6m. Soc. Zool. France, 

 vol. 4, 1891, p. 178, pi. 10, figs. 72, 73, text figs. 26-28.— Woodward, The 

 Observer, vol. 4, 1893, p. 75.— Goes, Kongl. Svensk. Vet. Akad. Handl., 

 31569—29 6 



