Report on Foraminifera. By F. W. Millett. 695 



only be accepted as a provisional one awaiting further elucida- 

 tion." * 



It cannot be said that subsequent researches have altogether 

 settled the characters of the species. The S. tuberculata of Brady f 

 is very doubtfully distinct ; on this point Wright observes,! " The 

 specimens recorded as Spirillina tuberculata, both by Siddall, in 

 ' Memoir on the Foraminifera of the Estuary of the Dee/ and by 

 Balkwill and myself, in ' Foraminifera of Dublin Bay and Irish 

 Sea,' should I feel satisfied be referred to & margaritifera ; and 

 S. tuberculata should be no longer included among the British 

 species." And Brady himself writes,§ " I am by no means con- 

 fident that this form, or at any rate the British specimens that 

 have been assigned to it, can be separated from Sp. margaritifera." 

 Concerning these inequilateral forms of Spirillina, Chapman ob- 

 serves, || "The inequilateral modifications of Spirillina^ are not 

 unfrequent at Funafuti, and are of much interest since they point 

 to the rotaline affinities which the genus has towards shells of the 

 trochoid type." 



Of published figures resembling or identical with S. margariti- 

 fera, may be mentioned : — S. margaritifera Terquem (not Wil- 

 liamson) If ; this has a square periphery, and concave faces with two 

 rows of tubercles. S. nodosa Terquem,** in which there is a single 

 row of nodosities ; he remarks that this species is sometimes 

 inequilateral, and shows one of the faces nearly plane with the 

 nodosities less pronounced. S. nodifera Terquem.ff which is 

 slightly concave in the centre, angular at the periphery, and orna- 

 mented with one series of granulations. S. tuber culata-limbata 

 Chapman,:j:$ has the larger and Hat surface limbate, and the peri- 

 pheral edge of the coil sharp on that side ; the smaller face is 

 slightly rounded and strongly tuberculate. 



The variety semiornata is very rare in the Malay Archipelago, 

 and has been noted only at Station 22 in Area 2. 



Spirillina decorata Brady. 



Spirillina decorata Brady, 1884, Chall. Kept., p. 633, pi. lxxxv. 

 figs. 22-25. S. decorata (Brady) Egger, 1893, Abhandl. k. bayer. 

 Akad. Wiss., CI. II. vol. xviii. p. 394, pi. xviii. figs. 64, 65. 



This also is very rare in the Malay Archipelago, and has been 

 found only at Station 2 in Area 1. 



* Rec. Foram. Gt. Britain, 1858, p. 93. 



t Quart. Journ. Micr. Sci., n.s., vol. xix. 1879, p. 279, pi. viii. fig. 28. 



t Proc. Belfast Nat. Field Club, App. 1885, 188G, p. 321. 



§ Jnurn. K. Micr. Soc, 1887, p. 918. 



II Journ. Linn. Soc, vol. xxviii. 1901, p. 411. 



^f Anim. Plage de Dunkerque, part 3, 1881, p. 110, pi. xiii. fig. 2. 

 ** Op. cit., fig. 1. 



ft Mem. Soc. ge'ol. Fr., se'r. 3, vol. ii. 1882, p. 34, pi. ix. fig. 32. 

 XI Journ. Linn. Soc, vol. xxviii. 1900, p. 11, pi. i. fig. 8. 



