130 FORAM1NIFERA OF THE CRAG. 



3. Transverse section of whorls elliptic (with the long axis in the plane of the 

 spire), passing into round or square. Type — C. polygyra, Reuss, 1863 ; see figs. 

 13 a, 13 b. 



Spirillina tenuissima, Qumlel, 1862. 

 Cornuspira nunnnulitica, Giimbel, 1868. 

 Operculina perforata, Costa, 1856. 

 Cornuspira angulata, Deecke, 1884. 



— pachjgyra, Giimbel, 1869. 



— orbicula (Terquem), Deecke, 1886. 



— Archiniedis, Stache, 1861. 



nuinismalis {Terquem and Berthelin), Burbach, 1886. 



— elliptica, Stache, 1864. 



Spirillina numismalis, Terquem and Berthelin, 1875. 

 Cornuspira filiformis, Reuss, 1868. 



— polygyra, Reuss, 1863. 

 Spirillina regularis, Terquem, 1876. 

 Cornuspira liasina, Terquem, 1866. 



— pygma?a, Andreae, 18S4. 



— Ammodiscus, or Spirillina, Wisniowski, 1888. 



— rugulosa, Reuss, 1856. 



4. Section of whorls crescentic. Type — G. involvens, Reuss, 1850 ; see 

 figs. 11 a, lib. 



Cornuspira involvens, Reuss, 1850. 



— — 1863. 



— ■ — ■ Jones, Parker, and Brady, 1S66. 

 — Hantken, 1875. 



Spirillina orbicula, Terquem, 1875. 

 Cornuspira polygyra (Reuss), Hantken, 1875. 

 Spirillina foliacea (young), Williamson, 1857 (fig. 201). 

 Cornuspira involvens, Balkivill and Millett, 1884. 



— — Brady, 1884. 



— — Brady, Parker, and Jones, 1888. 



— — Sherborn and Chapman, 1889. 



— Senonica, Dunikowski, 1879. 

 Frumentaria (quartae specei), Soldani, 1780. 



Cornuspira ? cretacea, Burrows, Sherborn, and Bailey, 1890 (pi. viii, fig. 6). 



5. Thick, depressed ; section of whorls oblong or elliptic (with the long axis 

 transverse to tbe spiral plane). Type — G. angigyra (Reuss), 1849; see 

 fi^'s. 14 ", 14 b. 



? Cornuspira polygyra, Reuss, 1870 ; von Schlicht, 1870, No. 522. 

 Operculina angigyra, Reuss, 1849. 



