Report on Foraminifera. By F. W. Millett. 541 



Com. Geol. d'ltalia, vol. iv. p. 74, pi. i. figs. 26-28. B. punctata 

 (d'Orb.) Woodward and Thomas, 1893, Geol. and Nat. Hist. Survey 

 of Minnesota, vol. iii. p. 34, pi. c. figs. 27, 28. B. punctata (d'Orb.) 

 Egger, 1893, Abhandl. k. bayer. Akad. Wiss., CI. II. vol. xviii. p. 298, 

 pi. viii. figs. 1-3. B. punctata (d'Orb.) Goes, 1894, K. Svenska 

 Vet.-Akad. Handl., vol. xxv. p. 49, pi. ix. figs. 475-478, 480. 

 B. punctata (d'Orb.) Egger, 1895, Jabresber. xvi. Naturhist. Ver. 

 Passau (p. 12) pi. i. fig. 11 ; and B. antiqua (d'Orb.) p. 11, pi. i. 

 figs. 13, 15. B. punctata (d'Orb.) Morton, 1897, Proc. Portland 

 Nat. Hist. Soc, vol. ii. p. 115, pi. i. fig. 11. B. elongata (Hantk.) 

 Egger, 1899, Abhandl. k. bayer. Akad. Wiss., Cl. II. vol. xxi. p. 14, 

 pi. xvi. figs. 12, 13. B. punctata (d'Orb.) Flint, 1899, Hep. U.S. 

 Nat. Mus. for 1897, p. 292, pi. xxxviii. fig. 1. B. punctata (d'Orb.) 

 Wright, 1900, Geol. Mag., dec. iv. vol. vii. p. 100, pi. v. fig. 10. 



This well known and widely diffused form is found in considerable 

 abundance all over the Ee^ion, and exhibits the usual variations in 

 length and breadth of the test, and in the number and form of the 

 chambers. In one interesting variety there is on the surface of each 

 chamber a clear patch quite free from puncta. 



Bolivina nobilis Hantken, plate IV. fig. 4.^ 



Bolivina nobilis Hantken, 1875 (1876), A magy. kir. foldt. int. 

 evkonyve, vol. iv. p. 56, pi. xv. fig. 4. B. nobilis (Hantk.) Chapman, 

 1892, Quart. Journ. Geol. Soc, vol. xlviii. p. 516, pi. xv. fig. 11. B. 

 nobilis (Hantk.) Egger, 1893, Abhandl. k. bayer. Akad. Wiss., Cl. II. 

 vol. xviii. p. 299, pi. viii. figs. 35-37. 



This species, as instituted by von Hantken, seems to be nothing 

 more nor less than a delicately striated variety of B. punctata ; and 

 the transition from one to the other, as far as surface ornamentation 

 is concerned, is well shown in the specimen selected for illustration, as 

 well as in that figured by Egger. In both of these the puncta, 

 instead of being diffused equally over the whole of the surface, resolve 

 themselves into longitudinal rows of dots. A tendency to become 

 dimorphous is well shown by the figured specimen, in which the 

 aperture of the last formed chamber is situated at the apex and 

 remote from the suture. One of the examples figured by Brady* 

 shows two uniserial following the biserial chambers. Chapman's 

 figured specimen from the Gault, referred to above, appears to have 

 the like peculiarity. This variation is however unusual in the species, 

 and not normal, as in the forms here assigned to the genus Bifarina. 



In the Malay Archipelago this species is abundant and widely 

 distributed. 



It is stated to have been found only in ' Challenger ' dredgings from 

 the South Pacific ; but amongst the ' Gazelle ' Stations there is one on 

 the West Coast of Africa. 



* Chall. Rept., 1884, pi. liii. fig. 14. 



