FORAMINIFERA OF THE CRAG. 
Genus—OrBIcuLiInA, Lamarck. 
Navtixus, Fichtel and Moll. 
OrBicuLina, Lamarck. 
ArcHatas, HELENIS, and ILotus, De Monéfort. 
OrpicuLina, Lamarck, De Blainville, D’ Orbigny, Williamson, Carpenter, &c. 
General characters.—Shell complanate, ear-shaped, sub-orbicular, or discoidal, usually 
thickened at the umbilicus. In typical specimens the plan of growth is spiral, frequently 
changing to cyclical, especially in large specimens. Septal bands narrow; chambers 
usually divided into chamberlets. Pseudopodial apertures in one or more rows on the 
peripheral margin of the last chamber. 
1. Orpicutina apuNcA, Fichtel and Moll. Plate III, fig. 44. 
NaUTILUS ADUNCUS (adult), Fichtel and Moll, 1803. Test. Microse., p. 115, pl. 23, 
figs. a—e. 
—  orBIcuLUS (middle-aged), Id., 1803. Ib., p. 112, pl. 21, figs. a—d. 
—  ANGULATUS (young), Fichtel and Moll, 1803. Ib., p. 113, pl. 22, figs. a—e, 
ARCHAIAS SPIRANS (= O. ancuLata), Montfort, 1808. Conchyl. Syst., p. 190. 
ILOTES ROTALITATUS (= O. oRBIcULUS), Id. Ib., p. 198. 
HELENIS spaTosus (= O. apuNCa), Id. Ib., p. 194. 
ORBICULINA apuNCA, Lamarck, 1816. Tabl. Encycl. Meéth., pt. 23, pl. 468, fig. 2. 
— ANGULATA, Id. Ib., fig. 3. 
— NuMMaATA (=O. orBIcuLUs), Id. Ib., fig. 1. 
_ NUMISMALIS _— Id., 1822. Anim.s. Vert., p. 609, No. 1. 
— ANGULATA, Id. Ib., No. 2. 
—  vuncinata (=O. apunca), Id. Ib., No. 3. 
— ADUNCA 
— ANGULATA De Blainville, 1824. Dict. Sc. Nat., vol. xxxii; and Malacologie, 
— NUMISMALIS pp. 373-375, after Lamarck. 
a NUMMATA 
_— NUMISMALIS, D’ Orb., 1826. Modéle No. 20; Ann. Se. Nat., vol. vii, p. 305,No. 1. 
— _ Ehrenberg, 1838. Abhand. Akad. Berlin., 1839, pl. 3, fig. 1. 
— apunca, D’Orb., 1840. Foram. Cuba, p. 64, pl. 8, figs. 8—16. 
— — Williamson, 1851. Trans. Micr. Soc. Lond., Ist ser., vol. iii, p. 105. 
— — Carpenter, 1856. Phil. Trans., vol. cxlvi, p. 547, pl. 28, figs. 1—22, 
and pl. 29, figs. 1—3. 
— — Parker and Jones, 1860. Ann. Nat. Hist., 3rd ser., vol. v, p. 181. 
— — Carpenter, 1862. Introd. Foram., p. 93, pl. 8, figs. 1—12. 
