428 Revieivs — Cretaceous Series of Upper Missoitri. 



p. 159, pi. xiv, figs. 4 a, b, c, corresponds very closely indeed with 

 Nengeboren's Nodosaria amhigua, Denkscbrit't. k. Akad. Wiss. Wien, 

 vol. xii, 1856, p. 71, pi. i, figs. 13-16, from the Chalk of Upper 

 Lapugy in Transylvania. It occurs also in some Tertiary beds, 

 and in the North Pacific Ocean. 



9. Frondic'ularia. A fragment of Fr. Vernenili nn a C?), d'Orhigny, 

 is given by Dr. Calvin in pi. xix, fig. 14, p. 229, Iowa Geol. Survey, 

 vol. iii. It is known from the Chalk of France and England. 



10. Cristellaria. Calvin, Iowa Geol. Survey, vol. iii, 1895, p. 229, 

 pi. xix, fig. 9, is either one of the poor varieties of Cr. rotulata, such 

 as are met with in the European Chalk, or the initial part of one of 

 the many Maryinulince of the Chalk. This is similar also to others 

 of both kinds met with in older and younger strata. 



11. Globigerina cretacea, d'Orbigny. Bailey, Amer. Journ. Sci. 

 and Arts, vol. xli, 1841, p. 401, fig. 4; G M. Dawson, Canad. Nat., 

 vol. vii, 1874, p. 253, fig. e (" Discorbina globulai-is," possibly an 

 immature Globigerina digitata) ; Woodward and Thomas, Geol. 

 Surv. Minnesota, 1885, p. 171, pi. iii, figs. 13 (?), 14-16; pi. iv, 

 fig. 19, and edge-views, figs. 23 and 24 (?) ; Calvin, Iowa Geol. 

 Survey, vol. iii, 1895, pp. 216, 228, pi. xix, figs. 1, 2, 4. The 

 appearance of limbate borders in these last and in most of the 

 other figures on this plate is probably due to the translucent edges 

 of these shells, as seen when mounted in balsam. Specimens of 

 real Globigerina marginata (Reuss). such as are known in the 

 European Chalk, were figured by Woodward and Thomas in the 

 Geol. Survey, Minnesota, 1885, p. 174, pi. iv, figs. 20-22, from 

 the Boulder-clay containing Cretaceous Foraminifera. Globigerina 

 cretacea is a characteristic microzoon of the Chalk. It has near 

 relatives in other deposits and in the existing seas. 



12. Globigerina digitata, Brady. Calvin, Iowa Geol. Survey, 

 vol. iii, 1895, p. 228, pi. xix, fig. 3. This interesting species has 

 not been previously observed in the Chalk, but only in the present 

 oceans. G. M. Dawson's fig. c, however, above mentioned, with 

 its elongate ultimate chamber, may be a proximate variety, or 

 a young form. 



13. Anomalina ammonoides (Reuss), G. M. Dawson, Canad. Nat., 

 vol. vii, 1874, p. 253, fig. d (" Flanorbulina Arimineusis"), is one of 

 the neat and almost symmetrical forms belonging to Planorbulina ; 

 it is very common in the European Chalk, and lives in the sea 

 now at depths varying from 37 to 1350 fathoms. It is figured 

 by Dr. Calvin, Iowa Geol. Survey, vol. iii, 1895, p. 235, pi. xix, 

 fig. 10, as " Truncattdina," to which it is generically allied, but more 

 symmetrically formed. 



14. Otbitolina or Patellina lenticularis (Blumenbach) is probably 

 the foraminifer, from Texas, figured and described by Dr. Ferdinand 

 Romer as Orbitulites Texanus in the "Kreidebildung von Texas," etc. 

 (4to, Bonn, 1852), p. 86, pi. x, figs. 7 a-d. He first mentioned it in 

 his "Texas" (Bonn, 1849), p. 392. 



For the occurrence of this little Cenomaiiian fossil in Europe, see 

 the Catalogue of the Fossil Foraminifera in the British Museum 



