54 INTRODUCTION. 



Catalogue of the Land and Fresh- water Testaceous 

 Mollusca found in the vicinity of Newcastle- 

 upon-Tyne, with remarks. Newcastle, 1830. 4to. 

 In the Transactions of the Nat. Hist. Soc. of 

 Northumberland. 



Supplement to a Catalogue, &c. Newcastle, 1837. 

 4to. 

 William Bean. 



Fusus Turtoni Bean, and Limnea lineata Bean; 

 two rare and hitherto undescribed shells, de- 

 scribed and illustrated. Loudon's Mag. N. Hist. 

 viii. 1834. 



Rev. M. G. Berkeley. 



Notice on the Rev. L. Guilding's Description of 



Ancylus. Zool. Journ. v. 269. 

 Description of the Animals of Voluta denticulata 



Mont., and Assiminia Grayana Leach. Zool. 



Journ. v. 427. 

 A Description of the Anatomical S true lure of Cy- 



clostoma elegans. Zool. Journ. iv. 278. 



J. Berkenhont. 



Synopsis of the Natural History of Great Britain 

 and Ireland. 2 vols. 1789. 



Andrew Bloxam. 



An Enumeration of the Land and Fresh- water 

 Shell Snails of Norfolk and Derbyshire. Lou- 

 don's Mag. N. Hist. vi. 324. 

 The names of the species must be taken with caution, 

 as the author says he found Valvata planorbis in 

 Norfolk, and Helix brevipes in Derbyshire. Pro- 

 bably, misled by Turton's figure, he mistook 

 some of the smaller Zonites for the latter. 



