BIGENERINA. 157 



Textularia globulosa, Woodward and Thomas, 1885. 13th Beport Minnesota, 



p. 166, pl.iii, figs. 1— 6. 

 — gibbosa, Halagoli, 1887. Atti Soc. Nat. Modena (Rend.), ser. 3, 



vol. iii, p. 108, pi. i, fig. 2. 



Characters. — Test consisting of globose chambers, arranged as an inverted 

 cone, varying among individuals in the relative width of the parallel alternate 

 series. Many small specimens widen out quickly, and have but few chambers 

 above the first ; others grow on with many chambers, more closely set, in a slowly 

 tapering cone (such as T. graeillima, Andreae ; and the still more attenuate 

 T. elongata, Cornuel) ; others of medium size and proportions, losing the roundness 

 and distinctness of the segments, pass into T. gibbosa, d'Orb. 



Occurrence — Textilaria globulosa. — This species, described by Ehrenberg, has 

 a wide geographical range, chiefly in the Cretaceous series. The localities whence 

 the specimens figured by Ehrenberg were obtained are — Cretaceous, Egypt, 

 Syria, Arabia ('?), France, England, Islands of Moen and Riigen in the Baltic, 

 Bohemia, Russia, and Missouri; Eocene, Egypt and Bavaria; also from volcanic 

 mud in the Eastern Archipelago, and from wind-dust at Malta, Lyons, and Silesia 

 or Austria. Dr. H. B. Brady has recorded it as occurring in a brackish tidal pond 

 at Westport, Ireland. It is a common Cretaceous fossil, being recorded from the 

 Chalk of Swanscombe (zone of Micraster cor-testudinarium), from the Chalk of 

 Taplow (zone of Belemnitella quadrata), from the Chalk of Westphalia, by Reuss, 

 under the name T. globifera, by Andreae, from the Oligocene of Elsass, under the 

 name T. graeillima ; and recently by Millett from the Pliocene of St. Erth. Only 

 one specimen has been met with in the Crag, and that in the Chillesford Beds of 

 Aldeby, near Beccles. 



Genus 2. — Bigenerina, d'Orbigny, 1826. 

 Brady, Beport ' Challenger. ,' 1884, pp. 68 and 368. 



Synonyms : 



Nautilus, pars, Batsch. 



Oethoceras, pars, Soldani. 



Bigenerina, d'Orb., Homer, Reuss, Costa, Parker and Jones, Karrer, Brady, 



Sch wager, 31. Sars, Vanden Broeck, Winther, Terrigi, Basset, Malagoli, Goes, 



Fornasini, and others. 

 GrEMMULiNA, d'Orbigny. 

 Vulvulina, pars, d'Orb., Reuss. 

 Clatulina, pars, d'Orb., Karrer. 

 Grammostomum, Reuss, P. and J., Brady. 

 Poltmorphina, pars, Ehrenberg. 

 Textularia, Goes. 



