Recent and Fossil Foraminifera. 415 



surmounted by a slightly raised and overhanging process. The 

 interior of each chamber traversed from base to apex by a column 

 similar in appearance, position and structure to the internal 

 column of Ellipsoidina: 



248. Mlipsoidella pleurostomelloides sp. n. 

 (Plate X. figs. 1-11.) 



Pleurostomella sw&wodosa Burrows, Sherbornand Bailey, 1890, Jonrn. R. Micr. 



Soc., p. 549, pi. viii. figs. 27-30. 

 Ditto. Boissel, 1891, Abhandl. der Kiinigl. preuss. geolog. Landesanstalt, 



N.S. pt. iii. 



We have at present nothing to add to our definition of the 

 species. 



Length 0*5-0 to 0*6 mm.) , 



Greatest breadth 0-2 mm.) ar S e s P ecim ns - 



Length • 3-0 to • 4 mm. j smaU imeM 



Greatest breadth - 125 mm. J 1 " L 



Besides the nine specimens found in the interior of the flints, 

 we have two small specimens found free in the shore-sand at the 

 House-pond Bed, which have no doubt been derived from shattered 

 flints. 



Family VII. LAGENID^. 

 Sub-family 1. Lageninae. 



Lagena Walker and Boys. 



92. Lagena globosa Montagu. 



249. (h-a) Lagena aspera Reuss. 



Lagena aspera Eeuss, 1861, Sitzungsb. d. k. Akad. Wiss. Wien, vol. xliv. 



p. 305, pi. i. fig. 5. 

 Ditto. (Reuss) Brady, 1884, Foram. ' Challenger,' p. 457, pi. lvii. figs. 7-10, 



var. fies. 6, 11, 12. 

 Ditto. (Beuss) Egger, 1899, Foram. Kreidemergeln der Oberbayerischen 



Alpen, p. 106, pi. v. fig. 10. 



250. (h-a) Lagena gracilis Williamson. 



Lagena gracilis Williamson, 1848, A.nn. Mag. Nat. Hist., ser. 2, vol. i p. 13, 



pi. i. figs. 3, 4. 

 Ditto. (Williamson) Bradv, 1884, Foram. 'Challenger,' p. 464, pi. lviii 



figs. 2, 3, 7-10, 19, 22-24. 

 Ditto. ( W illiamson) Egger, 1899, Foram. Kreidemergeln der Oberl tayeriscben 



Alpen, p. 105, pi. v. fig. 14. 



96. (h-a) Lagena sulcata Walker and Jacob. 

 97. (h-a) Lagena acuticosta Beuss. 



