FAMILY 16. MILIOLIDAE 151 



later ones in a rectilinear series ; aperture in the adult a rounded, 

 usually elliptical opening-, at the end of a short neck with a 

 phialine lip. 



Lower Eocene to Recent. 



Genus TUBINELLA Rhumbler, 1906 



Plate 18, figures 2, 3; plate 19, figure 7 

 Genotype, by designation, Articulina inornata H. B. Brady 



Tubinella Rhumbler, Zool. Jahrb., Abteil. Syst., vol. 24, 1906, p. 25. 

 Articulina (part) H. B. Brady (not d'Orbigny), Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 185. 



Test with an ovoid early portion, the remainder of the test 

 nearly straight, cylindrical ; partially divided ; aperture, the open 

 end of the last chamber; color, bluish- white. 



Recent. 



Genus NUBECULINA Cushman, 1924 

 Plate 18, figures 4-6 



Genoholotype, Nubecularia divaricata H. B. Brady 



Nubeculina Cushman, Publ. 342, Carnegie Inst. Washington, 1924, p. 52. 

 Sagrina (part) H. B. Brady (not d'Orbigny), Quart. Journ. Micr. Sci., 



vol. 19, 1879, p. 276. 

 Nubecularia (part) H. B. Brady (not Defrance), Rep. Voy. Challenger, 



Zoology, vol. 9, 1884, p. 133. 



Test elongate, uniserial; initial end coiled or milioline; 

 chambers distinct, simple; wall imperforate, porcellanous, with 

 sand grains attached to the exterior; aperture at the end of an 

 elongated tubular neck with an everted phialine lip, the aper- 

 tural opening with a series of inwardly pointing teeth. 



Recent. 



Genus TRILOCULINA d'Orbigny, 1826 



Plate 18, figures 7, 8; plate 19, figui'e 11 

 Genotype, by designation, Miliola trigonula Lamarck 



Triloculina d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 299. 

 Miliola (part) Lamarck, Ann. Mus., vol. 5, 1804, p. 351. 

 Miliolina (part) Williamson, Rec. Foram. Great Britain, 1858, p. 83, 

 (and later authors). 



