442 Transactions of the Society. 



156. Discorbina obtusa d'Orbiguy sp. 



Rosalina obtusa d'Orbigny, 1846, Foram. Foss. Vienne, p. 179, pi. xi. 



figs. 4-6. 

 Discorbina turbo (d'Orbigny) var. vesicularis, subvar. obtusa Parker and 



Jones, 1865, Phil. Trans., vol. civ. p. 386, pi. xiv. figs. 18, 19. 

 Discorbina obtusa (d'Orbigny) Brady, 1884, Foram. ' Challenger,' p. 644, 



pi. xci., fig. 9. 

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



vol. ix. No. 57, p. 220, pi. xii. fig. 8, and pi. xiv. fig. 4. 



Eecent. The specimens resemble those figured by Earland 

 from Bognor, and are of frequent occurrence. 



157. Discorbina rosacea d'Orbigny sp. 



Rotalia rosacea d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 273, No. 15 ; 



Modele No. 39. 

 Rotalina mamilla "Williamson, 1858, Eecent Foram. Gt. Britain, p. 54, pi. iv. 



figs. 109-11. 

 Discorbina rosacea (d'Orbigny) Brady, 1884, Foram. ' Challenger,' p. 644, 



pi. lxxxvii. figs. 1-4. 

 Ditto. (d'Orbigny) Brady, 1S87, Synopsis British Eecent Foraminifera.. 



Frequent, fossil and recent. The recent specimens are large 

 and well developed. 



158. Discorbina vilardeboana d'Orbigny sp. 



Rosalina vilardeboana d'Orbigny, 1839, Foram. Anier. Me rid., p. 44, pi. vi. 



figs. 13-15. 

 Discorbina vilardeboana (d'Orbigny) Parker and Jones, 1872, Quart. Journ. 



Geol. Soc, vol. xxviii. p. 115. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. 'Challenger,' p. 645, pi. lxxsvi. 



figs. 9-12 ; pi. lxxxviii. fig. 2. 



Eecent. One very fine specimen of this handsome variety. 



159. Discorbina isabeUecma d'Orbigny sp. 



Bosalina isabelleana d'Orbignv, 1839, Foram. Amer. Merid., p. 43, pi. vi. 



figs. 10-12. 

 Discorbina isabelleaii a (d'Orbigny) Parker and Jones, 1872, Quart. Journ. Geol. 



Soc, vol. xxviii. p. 115. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. ' Challenger,' p. 646, pi. lxxxviii. 



fig. I- 



We have a number of fossil specimens, probably Eocene, which 

 are apparently referable to this type. ' 



160. Discorbina orbicularis Terquem sp. 



Rosalina orbicidaris Terquem, 1876, Anim. sur la Plage de Dunkerque, p. 75, 



pi. ix. fig. 4 a, b. 

 Discorbina orbicularis (Terquem) Brady, 1884, Foram. ' Challenger,' p. 647, 



pi. lxxxviii. figs. 4-8. 



