312 Transactions of the Society. 



siderable variation in the relative length and breadth of tlie shell, 

 which may indicate two differenl sources of origin, especially as the 

 texture of the shell differs in the two forms. 



;i30. Bulimina fusiformis Williamson. 



Bulimina pupoides (d'Ovbignj)vax. fusiformis Williamson, 1858, Recent British 



Foraminit'era, p. 63, figs. 129, R J >0. 

 Bulimina presh var. ovata (d'Orbigny) Parker and Jones, 1862, Carpenter's 



Introduction to the Foraminifera, p. 311. 

 Bulimina. fusiformis (Williamson) Brady, 1887, Synopsis British Recent 



Foraminit'era. 

 Ditto. (Williamson) Wright, 1900, Geol. Mag., ser. 4, vol. vii. p. 100, pi. v. 



fig. 5. 

 Ditto. (Williamson) Millett, 1!»00, Malay Foram., Journ. R. Micr. Soc, 



p. 275, pi. ii. fig. 2. 



With one or two exceptions the specimens are pyritized fossils. 

 Parker and Jones (suprd) in their identification of Williamson's 

 figures, ascribed this species to B. ovata d'Orbigny, but, as pointed 

 out by Brady (swjjn?), Williamson's type is very distinct, and we do 

 not see any grounds for suppressing it. It is not very frequently 

 met with in shore gatherings, but it is very abundant in most muddy 

 dredgings made round the British Islands, and we have observed it 

 in many similar gatherings from nearly all parts of the world. 

 Millett's record is from the Malay Seas, where he states that the 

 specimens, " although neither numerous nor widely distributed, are 

 sufficiently characteristic." 



Joseph Wright (supra) states that it is common in the Post- 

 C41acial beds of Cheshire. 



331. Bulimina marginata d'Orbigny. 



Bulimina m<rginuta d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 269, No. 4, 



pL'xii. figs. 10-12. 

 Bulimina />i'j>oi<lfs var. marginata (d'Orbigny) Williamson, 1858, Recent 



Foram. Great Britain, p. 62, pi. v. figs. 126, 127. 

 Bulimina presli var. marginata (d'Orbigny) Parker and Jones, 1865, Phil. 



Trans., vol. civ. p. 372, pi. xv. fig. 10; pi. xvii. fig. 70. 

 Bulimina marginata (d'Orbigny) Brady, 1881, Foram. ' Challenger,' p. 405, 



pi. Ii. figs. 3-5. 

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

 Ditto. (d'Orbigny) Goes, 1894, Arctic and Scandinavian Foram., p. 46, pi. ix. 



figs. 439-414. 



Numerous specimens, the majority recent, the others fossil. As 

 usual, the specimens show a tendency to vary in the direction of 

 B. aouleata. B. marginata is very abundant in the recent condition 

 in the Atlantic, as far north as the Norwegian Fiords, although 

 Brady states that there is no certain record farther north than the 

 Faeroe Channel. It has been recorded in the fossil state from the 

 Tertiaries of Italy and from post-Tertiary deposits in Norway, Scot- 

 land, and Ireland. 



