NO. 3 CUSHMAN AND MCCULLOCH : SOME NONIONIDAE 175 



Polystomella crispa Lamarck, Hist. Anim. sans Vert., vol. 7, 1822, 

 p. 625.— d'Orbigny, Ann. ScI. Nat., vol. 7, 1826, p. 283, no. 1 : Modeles 

 no. 45 ; Foram. Foss, Bass. Tert. Vienne, 1846, p. 125, pi. 6, figs. 9-14. — 

 Parker, Jones and H. B. Brady, Ann. Mag. Nat. Hist., ser. 3, vol. 16, 

 1865, p. 26, pi. 3, fig. 96.— H. B. Brady, Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 736, pi. 110, figs. 6, 7. 



Elphidium crispum Cushman and Grant, Trans. San Diego Soc. Nat. 

 Hist., vol. 5, no. 6, 1927, p. 73, pi. 7, figs. Za, b. — Cushman and Leavitt, 

 Contr. Cushman Lab. Foram. Res., vol. 5, 1929, p. 20, pi. 4, figs. 3, 4. — 

 Cushman, Bull. 104, U.S. Nat. Mus., pt. 7, 1930, p. 20.— Cushman and 

 Valentine, Stanford Univ., Dept. Geology, Contr., vol. 1, no. 1, 1930, 

 p. 21, pi. 5, figs. \2a, b. — Dolgopolskaja and Pauli, Sta. Biol. Karadagh 

 Travaux, vol. 4, 1931, p. 34, pi. 3, figs, \3a-c, text figs. 1-3. — Hada, To- 

 hoku Imp. Univ. Sci. Rep'ts, ser. 4, Biol., vol. VI, 1931, p. 123. — Bog- 

 danowicz and Fedorov, On some representatives of the Genus Elphidiinn 

 of the Sarmatian deposits of the lower Kuban River course, 1932, pp. 12, 

 48, pi. 1, fig. 3, text figs. 11, 12.— Macfadyen, Geol. Mag., vol. 69, 1932, 

 pi. 35, figs. 18fl, Z- .—Cushman, Bull. 161, U.S. Nat. Mus., pt. 2, 1933, 

 p. 47, pi. 11, figs. Aa, b. — Tolmachoff, Ann. Carnegie Mus., vol. 23, 1934, 

 p. 304, pi. 40, figs. 26, 27.— Cushman, U.S. Geol. Survey Prof. Paper 

 191, 1939, p. 50, pi. 13, figs. 17-21. 



Themeon rigatus Montfort, Conch. Syst., vol. 1, 1808, p. 203, 51* 

 genre. 



Test of large size for the genus, about 2^^ tim.es longer than wide in 

 peripheral view, lenticular, completely involute, the umbilical regions 

 with a medium-sized, slightly projecting, rounded boss of clear shell ma- 

 terial, the surface of which is set with 10 to 12 small, shallow, rounded 

 pits, periphery sharply angular but not sharply keeled, sometimes becom- 

 ing slightly lobulate and blunter in the last portion of the adult coil; 

 chambers very numerous, 20 to 40, long and narrow, the last few often 

 inflated, forward part slightly raised, giving a radially ribbed appearance; 

 sutures somewhat sigmoid, the middle portion of each nearly radial, often 

 partially obscured by the retral processes, set with pores, those of the 

 earlier ones indistinct but later ones with large and deep pores ; wall finely 

 perforate, with about 12 relatively long retral processes extending well up 

 onto the side of the next added chamber, appearing as fairly widely spaced, 

 low elevations of the wall in the earlier chambers but as thicker and more 

 rodlike structures in the later chambers; aperture a row of small openings 

 at the base of the apertural face, which is low, sagittate, the sides often 

 -slightly concave, the ends pointed. 



