Recent and Fossil Foraminifera. 443 



Discorhina orbicularis. (Terquern) Balkwill and Wright, Trans. B. Irish 



Acad., vol. xxviii. (Science), p. 349, pi. xiii. figs. 31-3. 

 Ditto. (Terquem) Brady, 1887, Synopsis British Becent Foraminifera. 



Common as fossils, and a few perhaps recent. The fossils vary 

 greatly in size, and are evidently derived ' from various strata. It 

 lias been recorded from several Tertiary deposits. 



161. Discorhina pariszensis d'Orbigny sp. 



Bosalina parisiensis d'Orbigny, 1826, Ann. Sci. Nat., vol. vii., p. 271, No. 1;. 



Modele No. 38. 

 Discorhina parisiensis (d'Orbigny) Parker, Jones, and Brady, 1865, Ann. 



and Mag. Nat. Hist., ser. 3, vol. xvi., pi. ii. fig. 70. 

 Ditto, (pars) (d'Orbigny) Wright, 1877, Proc. Belfast Nat. Field Club, 



1876-7, Appendix, p. 105, pi. iv., fig. 1. 

 Ditto. (d'Orbigny) Bradv, 1884, Foram. ' Challenger,' p. 648, pi. xc, 



figs. 5, 6, 9-12. 

 Ditto. (d'Orbigny) Brady, 1887, Synopsis British Kecent Foraminifera. 

 Ditto. (d'Orbigny) Earland, 1905, Journ. Quekett Micr. Club, ser. 2, 



vol. ix., No. 57, p. 221, woodcut, pi. xii. figs. 4-7, and pi. xiv. 



fig. 5. 



Kecent. Specimens identical with those from Earland's collec- 

 tion at Bognor are fairly frequent. Plastogamic specimens have 

 been observed, but less frequently than at Bognor. 



162. Discorhina. ivrightii Brady. 



Discorhina wrightii Brady, 1881, Denkschr. d. k. Akad. Wiss. Wien, vol. xliii. 



p. 104, pi. ii. fig. G ; Ann. and Mag. Nat. Hist., ser. 5, vol. viii. 



p. 413, pi. xxi. fig. 6. 

 Ditto. (Brady) Brady, 1887, Synopsis British Becent Foraminifera. 

 Ditto. (Brady) Earland, 1905, Journ. Quekett Micr. Club, ser. 2, vol. ix. 



No. 57, p. 223. 



Becent. Less frequent than at Bognor. 



163. Discorhina opercxdaris d'Orbigny sp. 



Bosalina opercuiaris d'Orbicny, 1826, Ann. Sci. Nat., vol. vii. p. 271, No. 7. 

 Ditto. d'Orbigny, 1839, Foram. Cuba, p. 101, pi. iii. figs. 24, 25, pi. iv. fig. 1. 

 Discorhina opercuiaris (d'Orbigny) Parker and Jones, 1872, Quart. Journ. 



Geol. Soc, vol. xxviii. p. 114. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. 'Challenger,' p. 650, pi. lxxxix. 



figs. 8, 9. 



Two specimens ; fossil. It is a shallow- water tropical and 

 sub-tropical form in the recent state. 



164. Discorhina rarescens Brady. 



Discorhina rarescens Bradv, 18S4, Foram. ' Challenger,' p. 651, pi. xc. figs. 2, 

 3,(4?). 



Eare, but typical fossil specimens. 



