rOEAMINIFEEA OP THE KEEIMBA AECHIPELAGO, G93 



34G. Discorbina planorbis (d'Orbigny). 



Asterifjerina plaiiorbis d'Orbigny, 1846, FFV. p. 205, pi. xi. figs. 1-3. 

 Diiscorhina {AsLeriyerina) planorJits Zittel, 1876, HP. p. 93, fig, 31. 



planorbis Herou-Alleii & Earlaiul, 1913, CI. p. 124, pi. xi. figs. 10-12. 



8 Stations. 



Fairly generally distributed, but the specimens are poorly developed and few in 



number, the best and most numerous examples being found at Stns. 10, 11, and 12. 



347. BisCOrbina turbo (d'Orbigny). 



Rotalia {Trochulina) turbo d'Orbigny, 1826, TMC. p. 274, no. 39,. Modele no. 73. 

 Discorhina turho Carpenter, Parker, & Jones, 1862, IF. p. 204, App. p. 311. 



„ Brady, 1884, FC. p. 642, pi. Ixxxvii. fig. 8. 



„ Egger, 1893, FG. p. 389, pi. xv. figs. 42-44. 



„ Sidebottom, 1904, etc., RFD. 1908, p. 11, pi. iii. figs. 1, 2. 



„ Chapman, 1907, RFV. p. 134. 



4 Stations. 



Rarely distributed, the only good and typical specimens being found at Stns. 9 

 and 11. At Stn. 11 the sutures on the superior face are strongly limbate, 



348. Discorbina orbicularis (Terquem). 



Rusaliiia orbicularis Terquem, 1875, etc., APD. 1876, p. 75, pi. ix. fig. 4. 

 Discorbina orbicularis Balkwill & Millett,, 1884, FG. p. 23, pi. iv. fig. 13. 



Brady, 1884, FC. p. 647, pi. Ixxxviii. figs. 4-8. 



Balkwill & Wright, 1885, DIS. p. 349, pi. xiii. figs. 31-33. 



Chapman, 1900, FLF. p. 191. 



Egger, 1893, FG. p. 389, pi. xv. figs. 16-18, 76-78. 

 „ „ Sidebottom, 1904, etc., RFD. 1908, p. 13, pi. iv. fig. 7. 



E[erou-Allen & Earland, 1913, CI. p.' 126, 



12 Stations. 



Fairly generally distributed and moderately abundant. The specimens axe, as a 

 rule, quite typical, presenting hardly any variation except in size. 



349. Discorbina mamilla (Williamson). 



RotalirM mamilla Williamson, 1858, RFGB. p. 54, pi. iv. figs. 109-111. 

 Discorbina rosacea Sidebottom, 1904, etc., RFD. 1908, pi. iv. fig. 5. 



„ mamilla Heron-Allen & Earland, 1913, CI. p. 123, pi. xi. figs. 4-6. 



4 Stations. 



A few typical specimens, the best being at S-tn. 11. 



350. Discorbina mediterranensis (d'Orbigny), 



Rusalina mediterranensis d'Orbigny, 1826j TMC. p. .271. no. 2. 

 Discorbina vilardeboana Brady, 1884, FC. p. 645, pi. Ixxsvi. fig. 9. 



rosacea Goes, 1882, RRCS. p. 105, pi. viii. figs. 251-257. 

 „ mediterranensis Fornasini, 1898, RFI. p. 264, text-fig. 



„ Heron-Allen & Earland, 1913, CI. p. 118, pi, ix. figs. 12-14; 



pi. X. fig. 1. 



