Recent and Fossil Foraminifera. 433 



Polymorphina complanata (d'Orbigny) Brady, Parker, and Jones, 1870, Trans. 



Linn. Soc. Lond. vol. xxvii. p. 230, pi. xl. figs. 14 a, b, woodcuts f-j. 

 Ditto. (d'Orbigny) Balkwill and Millett, 1884, Journ. Micr. and Nat. Sci. 



vol. iii. p. 84, pi. iv. fig. 9. 

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



One large and perfect specimen, and several more or less im- 

 perfect. They are of an extremely compressed and elongate type, 

 differing considerably in breadth from most of the figured specimens 

 of P. complanata. Indeed, their general outline is strongly sug- 

 gestive of Frondicularia gatdtina(Reuss), but the true polymorphine 

 nature of the shell is clearly marked by the fact that the earlier 

 chambers are set in a somewhat different plane to the later ones. 

 The specimens are undoubtedly fossil, and are probably derived 

 from a clay, but it has been recorded among recent British Forami- 

 nifera by Balkwill and Millet (supra) from the shore-sands of 

 Galwav. Their specimen, however, is of a broader and thicker 

 build. 



The large perfect specimen measures 1 • 15 mm. in length and 

 # 425 mm. in breadth; the smaller one, which is less attenuate, 

 is 0'83 mm. in length and 0*375 in breadth. 



*&' 



129. Polymorphina eJegantissima Parker and Jones. 



Polymorphina elegantissima Parker and Jones, 1865, Phil. Trans., vol. civ. 



table x. p. 438. 

 Ditto. (Parker and Jones) Brady, Parker, and Jones, 1870, Trans. Linn. Soc. 



Lond., vol. xxvii. p. 231, pi. xl. figs. 15 a-c. 

 Ditto. (Parker and Jones) Brady, 1884, Foram. 'Challenger,' p. 566, 

 pi. lxxii. figs. 12-15. 



Fossil. The specimen, which is not very characteristic, is ap- 

 parently derived from a clay. Brady's records are all from moderate 

 depths in tropical and sub-tropical seas, but he mentions that the 

 P. problema var. deltoidea of Eeuss and P. anceps of Philippi are 

 apparently inseparable from this species. These are both recorded 

 as Tertiary fossils. 



130. Polymorphina communis d'Orbigny. 



Polymorphina (Guttulina) communis d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. 



p. 266, pi. xii. figs. 1-4 ; ModMe^No. 62. 

 Polymorphina communis (d'Orbigny) Brady, Parker, and Jones, 1870, Trans. 



Linn. Soc. Lond., vol. xxvii. p. 224, pi. xxxix. fig. 10 a, b. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. ' Challenger,' p. 568, pi. lxii. fig. 19. 

 Polymorphina prdblema (d'Orbigny) Brady, 1887, Synopsis British Pvecent 



Foraminifera. 



Frequent. The specimens are apparently all fossil. 

 Aug. 18th, 1909 2 G 



