3(w; Transactions of the Society. 



.".16. Orbitolites compla/nata Lamarck. 



Orbitolites complanata Lamarck, 1801, Syst. Anim. sans Verfceb., }>. 376. 

 Ditto. Lamarck, 1816, Nat. Hist. Anim. sans Verteb , vol. ii., p. l-»6. No. 2. 

 Ditto. Lamarck) Carpenter, 1850, Quart. Journ. Geol. Soc ., vol. vi, p. 30, 



pi. vii. figs. 24-30. 

 Ditto. Lamarck) Carpenter, 1856, Phil. Trans., p. 224, pis. iv. w., etc. 

 Ditto. (Lamarck) Carpenter, 1883, .Report on Genus Orbitolites, Zool. 



• Challenger' Expedition, part xxi., p. 29, pi. v. figs. 14 -18. pis vi., 



vii., viii. 

 Ditto. (Lamarck) Brady, 1881, Foram. ' Challenger,' p. 218, pi. xvi. figs. 1-6, 



pi. xvii. figs. 1-6. 



Fragments of this species are not uncommonly met with among 



the coarser sittings, and we have one or two almost perfect speci- 

 mens representing early stages of the shell. They are doubtless 

 all derived from Eocene strata. According to Brady, the species 

 has been recorded by Fisher from the Bracklesham Beds of Hamp- 

 shire, but we have been unable to trace the record to which he 

 refers. It occurs in many continental Tertiary deposits. 



316. Pelosina variabilis Brady. 



Pelosina variabilis Brady, 1879, Quart. Journ. Micr. Sci., vol. xix., N.S. p. 30, 



pi. iii. figs. 1-3. 

 Ditto. (Brady) Robertson, 1881 , Proc. Nat. Hist. Soc, Glasgow, vol. v., p. 163. 

 Ditto. (Brady) Brady, 1884, Foram. ' Challenger/ p. 235, pi. xxvi. figs. 7-9. 

 Ditto. (Brady) Brady, 1887, Synopsis British Recent Foraminifera. 

 Ditto. (Brady) Flint, 1899, Report U.S. Nat. Museum (1897) p. 266, pi. iv. 

 fig. 1. 

 Among the washings of mud from the Mixon Beef we have 

 found many specimens, more or less fragmentary, referable to this 

 species. Individual fragments also occur in some of the shore 

 gatherings. This is one of the lowest types of the Foraminifera, 

 the organism consisting merely of a single chamber of irregular 

 shape, bounded by thick walls of fine mud upon a chitinous tube 

 or layer. The chitinous envelope frequently extends without an 

 external covering of mud at the oral end of the shell. It often 

 attains to a considerable size. In some of the ' Goldseeker ' 

 dredgings from the North Sea, specimens half to three-quarters 

 of an inch in length are found. 



44. Psammosphxra fusca Sehulze. 



45. Saccammina sphmrica M. Sars. 



Since, our original note upon these species was published we 

 have found a considerable number of specimens of both at various 

 points of the shore. 



317. Hyperammina vagans Brady. 



Hyperammina vagans Brady, 1879, Quart. Journ. Micr. Sci., vol. xix., N.S., 



p. 33, pi. v. fig. 3. 

 Ditto. Brady Eaensler, 1883, Quart. Journ. Geol. Soc, vol. xxxix., p. 26, 



pi. ii. figs. 2-6. 



