Recent and Fossil Foraminifera. 691 



presents a distinct type. d'Orbigny published no figure of this 

 species, and his description (" espece plus convex en dessus qu'en 

 dessous ") would not go far towards identification. Terquem, how- 

 ever, appears to have had access to d'Orbigny's figure in the 

 " Planches inedites." The shell is smooth and almost hemispherical 

 on the superior face. The inferior or oral face is less convex, but 

 the central portion rises in a pronounced umbo or boss. The sutures 

 between the chambers are marked by deep clefts, which, however, 

 do not extend either to the umbo or the periphery. Terquem' s 

 specimens were from the Eocene of Paris. 



205. Rotalia calcar d'Orbigny sp. 

 Plate XXI., fig. 1, a, b, c. 



Calcarina calcar d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 276, No. 1 ; 



Modele No. 34. 

 Rotalia armata d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 273, No. 22 ; 



Modele No. 70. 

 Ditto. (d'Orbigny) Terquem, 1882, Mem. Soc. geol. France, ser. 3, vol. ii. 



No. 3, p. 67, pi. v. figs. 14, 15. 

 Rotalia calcar (d'Orbigny) Earland, 1905, Journ. Quekett Micr. Club, ser. ii. 



vol. ix. No. 57, p. 228. s 



Abundant, in every stage of development, and from several 

 distinct strata. All the specimens are unquestionably fossil, and 

 doubtless Earland's record from the Bognor shore-sands {supra) 

 must now be removed from the list of recent British forms, as his 

 specimens, which were small and rare, have probably been derived 

 from the same strata as some of the smaller Selsey specimens, to 

 which they bear great resemblance. 



Sub-Family 3. Tinoporinae. 



Gypsina Carter. ^ 



206. Gypsina inhxrens Schultze sp. 



Acervulina inhserens Schultze, 1854, Organ, der Polythal., p. 68, pi. vi. fig. 12. 

 Tinoporus tucidus Brady, 1870, Edinburgh Catalogue of British Foram., p. 8. 

 Ditto. (Brady) Wright, 1877, Proo. Belfast Nat. Field Club, 1876-7, App. 



p. 105, pi. iv. figs. 4, 5. 

 Gypsina inhmrens (Schultze) Brady, 1884, Foram. 'Challenger,' p. 718, pi. 



cii. figs. 1-6 

 Ditto. (Schul'zc) Brady, 1887, Synopsis British Becent Foraminifera. 

 Ditto. (Schultze) Goi : s. 1891, Arctic and Scandinavian Foraminifera, p. 91, 



pi. xv. fig. 787. 



Abundant ; recent and fossil. The latter are evidently derived 

 from several distinct sources. Brady states that there is no record 

 of its occurrence as a fossil, but it seems unlikely that such a simple 

 type should not have a considerable geological range. 



