310 Mr. F. Chapman on Foraminifera 



Cristellaria oligostegia, Reuss. 



Cristellaria oligostegia, Reuss, 1860, Sitzungsb. d. k. Ak. Wiss. Wien, 

 vol. xl. p. 213, pi. viii. fig. 8; Chapman, 1891, Journ. R. Micr. Soc. 

 pp. 651, 652, pi. x. figs. 5 a, b. 



This species is somewhat rare at Swaffham. 



Cristellaria scitula, Berthelin. 



Cristellaria scitula, Berthelin, 1880, Mem. Soc. gtSol. France, ser. 3, 

 vol. i. no. 5, p. 53, pi. iii. figs. Sa-c; Chapman, 1894, Journ. R. 

 Micr. Soc. p. 652, pi. x. figs. 7 a, b. 



Very rare at Swaffham. 



Cristellaria complanata, Reuss. 



Cristellaria complanata, Reuss, 1815, Verstein. bohm. Kreidef. pt. i. 

 p. 33, pi. xiii. fig. 54; Chapman, 1894, Journ. R. Micr. Soc. 

 pp. 653, 654, pi. x. figs. 12 a, b. 



One very fine example from the Cambridge Greensand of 

 Swaffham. 



Cristellaria turgidula, Reuss. 



Cristellaria turgidida, Reuss, 1862, Sitzungsb. d. k. Ak. Wiss. Wien, 

 vol. xlvi. p. 73, pi. viii. figs. 4 a, b ; Chapman, 1893, Journ. R. Micr. 

 Soc. pp. 1, 2, pi. i. figs. 1 a, b. 



Very rare at Swaffham. 



This record extends the range of the form upward, it 

 having been noticed previously in the various divisions of the 

 Albian stage. 



Cristellaria circumcidanea, Berthelin. 



Cristellaria circumcidanea, Berthelin, 1880, Mem. Soc. g£ol. France, 

 ser. 3, vol. i. no. 5, p. 52, pi. iii. figs. 1 a, b ; Chapman, 1896, Journ. 

 R. Micr. Soc. pp. 2, 3, pi. i. figs. 2 a, b. 



This species is common at Swaffham. 



Cristellaria convergens, Borne mann. 



Cristellaria convergens, Bornemann, 1855, Zeitschr. d. deutsch. geol. 

 Gesellsch. vol. vii. p. 327, pi. xiii. figs. 16, 17 ; Chapman, 1896, Journ. 

 R. Micr. Soc. p. 4, pi. i. figs. 6 a, b. 



One specimen from Swaffham. 



Cristellaria gibba, d'Orbigny. 



<a, d'Orbigny, 1826, Ann. Sc 

 pman, 1896, Journ. R. Mic 



This species is common at Swaffham. 



Cristellaria gibba, d'Orbigny, 1826, Ann. Sci. Nat. vol. vii. p. 292, 

 no. 17 ; Chapman, 1896, Journ. R. Micr. Soc. pp. 4, 5, pi. i. 

 figs. 7 a, b. 



