446 Transactions of the Society. 



been fully described by Sidebottom.* The inferior side of D. cristata 

 is very similar to D. pulvinata Brady in the curious radiating strife, 

 but it differs from that form in the arrangement of the chambers 

 and the appearance of the superior face. Sidebottom (op. cit.) refers 

 to a variety of D. pulvinata which apparently approaches our species 

 more closely than does the type. 



Dimensions. — Greatest breadth, • 225-0 • 3 mm. ; least breadth 

 • 2-0 • 225 mm. Height, • 15 mm. 



* Sidebottom, Forarninifera from the Island of Delos, 1907. Mem. aud Proc. 

 Manchester Lit. and Phil. Soc. li. No. 9, pp. 17-18. 



