80 



TEANS. MIOROSO. SOO., 1844 — 1852. 



WILLIAMSON, W. C— 



(2). On the minute structure 



of the calcareous shells of some 



recent species of Foraminifera. 



iii, 105-128, pis. xvii, xviii. 

 Wood ; fossil, Bowerbank (1), Farre 



(1), Sorby (1). 



X. 



Xanthidium, H. H. White (1, 2), Deane 

 (1). 



Zoarcus, scales, J. Quekett (12). 

 Zootoca, femoral plates, Spencer (1). 



