338 Transactions of the Socle/ y. 



Pulvinulina auricula (Fichtel and Moll) Brady, 1881, Forani. 'Challenger, 



p. 688. 

 Pulvinulina brongniartii (d'Orbigny) Millett, 1904, Malay Forani., Journ. E. 



Mior. Soc, p. 498, pi. x. fig. 4. 



Abundant and well preserved specimens, all fossil. D'Orbigny's 

 original specimens were from the Miocene of Vienna: "common." 

 He also records it as living in the Adriatic. Millett figures a 

 variety from the Malay seas which differs from d'Orbigny's type 

 considerably, in that the shell is more compressed and has a ten- 

 dency to form a carina on the outer edge. The sutures also are 

 limbate, whereas in d'< )rbigny's type they are flush or simple. Our 

 specimens agree with d'Orhigny's, though there is some tenden<\ 

 towards a thickening of the sutures on the inferior surface. 



Brady {supra) regards this type as an intermediate between 

 Pulvinulina auricula (F. and M. sp.) and Pulvinulina hauerii 

 (d'Orb. sp.). 



381. Pulvinulina crassa d'Orbigny sp. 



Rotalina crassa d'Orbigny, 1840, Mem. Soc. Geol. France, vol. iv. p. 32, pi. iii. 



figs. 7, 8. 

 Pulvinulina crassa (d'Orhigny) Owen, 1867, Journ. Linn. Soc. Lond., vol. ix. 



Zool. p. 148, pi. v. figs. 8 (?), 9. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. ' Challenger,' p. 694, pi. ciii. figs. 



11, 12. 

 Ditto. (d'Orbigny) Egger, 1893, Abhandl. k. bayer. Akad. Wiss., CI. II. 



vol. xviii. p. 416, pi. xviii. figs. 7-12. 

 Ditto. (d'Orbigny) Flint, 1899, Rep. U.S. Nat. Museum for 1897, p. 329, 



pi. lxxiv. fig. 1. 

 Ditto. (d'Orbigny) Ehumbler. 1900, Nordisches Plankton, Heft xiv. p. 17, 



figs. 12, 14, 15. 



Many specimens, well preserved fossils, from clays and shell- 

 sands. At the present time P. crassa is recorded only from deep 

 water in the great oceans, the records ranging from 150 to 2740 

 fathoms. Brady states that it is not uncommon from Chalk in the 

 neighbourhood of Paris and from Kent, but adds that there is no 

 mention of its occurrence in other formations. 



382. Pulvinulina haliotidea sp. n. 

 Plate XL figs. 6-11. 



We have a single imperfect specimen, which we figure, of a 

 little Foraminifer which Earland has found in some quantity at 

 practically all the shallow-water stations worked by the ' Gold- 

 seeker ' round the north and east of Scotland. It may be regarded 

 as an extreme variation of the type P. auricula (F. and M.) in the 

 direction of compression of the test and evolution of the spiral. 

 Our description is based upon the general characteristics of the 

 North Sea specimens. 



