Synopsis of the British Recent Foraminifera. By H. B. Brady. 911 



MarginuUna glabra, Brady, 1870, Ann. and Mag. Nat. Hist., ser. 4, 

 vol. vi. p. 296, pi. xii. lig. 3. 

 Occasional specimens at many points both of the British and Irish 

 coast. 



MarginuUna eostata, Batsch, sp. 



Nautilus (Orthoceras) costatus, Batsch, 1791, Conchyl. des Seesandes, 



p. 2. pi. 1, fig. 1. 

 MarginuJina raplianus, Brady, 1866, Eeport Brit. Assoc, Nottingham 



Meeting, Trans., p. 70. 

 Hebrides (Brady) ; estuary of the Dee (Siddall) ; Irish Sea (Balkwill 

 and "Wright) ; south-west of Ireland (Wright) ; specimens rare and 

 except in the last-named locality usually small. 



Cristellaria, Lamarck. 



Gristellaria elongata, Williamson. 



CristeUaria siihareuatuhi, var. elongata, Williamson, 1858, Kec. For. 



Gt. Br., p. 30, pi. ii. fig. 62. 

 Marginidina lituus, Parker and Jones, 1862, Carpenter's Introd. Foram., 

 Appendix, p. 310. 

 Killybegs Harbour (Wright). Williamson gives no locality for his 

 specimen. 



In so far as the generic distinction is of any value, Williamson's 

 figure is that of a Gristellaria, not a MarginuUna. It differs little, if at 

 all, from the Gristellaria ohtusata of Beuss. 



Gristellaria crepidula, Fichtel and Moll, sp. 



Nautilus crepidula, Fichtel and Moll, 1803, Test. Micr., p. 107, pi. xix. 



figs. g-i. 

 Gristellaria subarcuatula, Williamson, 1858, Kec. For. Gt. Br., p. 29, 

 pi. ii. figs. 56, 57. 

 Widely distributed. 



Gristellaria rotulata, Lamarck, sp. 



Lenticulites rotulata, Lamarck, 1804, Ann. du Museum, vol. v. p. 188, 

 No. 3 ; — Tableau Encycl. et Meth., pi. cccclxvi. fig. 5. 



Gristellaria calcar {typica), Williamson, 1858, Rec. For. Gt. Br., p. 27, 

 pi. ii. figs. 52, 53. 

 Widely distributed. 



Gristellaria cultrata, Montfort, sp. 



Bohulus cultratus, Montfort, 1808, Conchyl. System., vol. i. p. 214, 



54*^ genre. 

 Gristellaria cultrata, Brady, 1866, Eeport Brit. Assoc, Nottingham 

 Meeting, Trans., p. 70. 

 Carinate Gristellariss are rare in the British seas. Occasional 

 specimens are found associated with G. rotulata, but they are invariably 

 small and the peripheral keel only slightly developed. 



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