the Nomenclature of the Foraminifera. , 297 



11. Textilaria sagittula, Def ranee. 



12. gibbosa, Z^'Or^.. 



13. subangulata, i)'Or/». 



14. globulosa, Ehr. 



15. Heterostomella aculeata {Ehr.). 



16. Verneuilina pygmtea [Egger). 



17. SpliEeroidiua bulloides, & Orb. 



18. Globigerina cretacea, i>' OrZ>. 



19. Planorbulina ammonoides {Reuss). 



20. globulosa (Ehr.). 



21. Pulviimlina truncatulinoides {D^Orh.). 



22. Micheliniana (D'Orh.). 



XIII. Foraminifera from the Chalk of Oravesend, in Kent, 

 England. (Monatsbericlite Berl. Akad. Wiss. 1838, pp. 193, 

 194. Abhandliingen, 1838, pp. 92, 133-135, table iv. pi. 4. 

 fig. 4.) 



In PI. XXVIII. of the ' Mikrogeologie ' are figured numerous 

 Foraminifera, mostly very small, discovered by Dr. Elirenberg 

 in English Chalk, soft and white, from Gravesend, near 

 London* ; they are magnified 300 times in linear dimensions. 

 These are referred to in the ' Monatsberichte ' of the Berlin 

 Academy for 1838 (where some of them are stated to have 

 been found in the Chalk of Brighton also) , and in the ' Abhand- 

 lungen' for 1838. An able abstract of this and another me- 

 moir in the ' Abhandlungen ' was made by the late T. Weaver, 

 F.K.S., F.G.S., in 1841, and published in the ' Phil. Mag.' 

 ser. 3. vol. xviii. pp. 375 & 443 &c., and in the ' Annals and 

 Mag. Nat. Hist.' vol. vii. pp. 296, 374, &c. In Taylor's 

 ' Scientific Memoirs,' vol. iii., is a full translation, with the 

 original plates, of Ehrenberg's memoir " on the numerous 

 Animals of the Chalk Formation which are still found living," 

 from the Berlin Acad. Transact, for 1840. 



The results of our careful examination of Ehrenberg's 

 figures are as follows : — 



Fig. 1, Miliola Icevis, is probably a single joint or a detached 

 chamber of a Nodosaria. Ehrenberg's '■'■Miliola'''' is for the 

 most part the same as Lagena and Orhulina of other authors. 

 Fig. 2, Nodosaria anglica^ is N. ovicula, P'Orb., with a rather 

 excentric aperture. Fig. 3, N. monile, is a variety of N. ovi- 

 mla, D'Orb., with rather short chambers. Fig. 4, Vagimdina. 

 nodulosa, is a variety of Koemer's V. loivigata^ with a peculiar 



* The description of this plate is here revised and reprinted from the 

 'Geological Magazine,' vol. viii. no. 11, November 1871. 



Ann. & Mag. N. Hist. Ser. 4. TW. ix. 21 



