105 



PoPA UMBiLicATA [The Umbilicatcd Chrysalis Shell] 



Drapamaud. 



Figure 76. 



76. 



Cylindrical jn form J smooth; peristome broad and 

 reflexed. Colour pale brown. Semi-transparent, thin , 

 apex abrupt, aperture lunate. A single tooth. From 

 five to seven convolations. 



Usual length a ninth of an inch ; breadth a twentieth 

 of an inch. 



Mr, Joshua Alder, uf Newcastle, found it to be viva- 

 poroas, having extracted the young with the first whorl 

 of the shell formed within the parent shell. 



The colour of the animal is blue. 



First described by Dr. Lister, in the year 1678. 



A very common species, procured in cracks of old 

 walls, under stones and the bark of trees, amongst moss 

 and ivy, in hedi^es and sand banks. Occurring not 

 only in valleys and near the sea .shore, but also upon 

 mountains. 



In this neighbourhood it is abundant at Nottingham 

 Castle and Highfield House. 



A few examples will suffice to show its wide range :-- 

 Penzance (Millett). Bristol (Miller), Wiltshire, Dorset- 

 shire, and Kent (Montagu), Essex (Sheppard), Norwich 

 (Bridgman), London (Grey), Caike Abbey, Derbyshire 

 (Bloxam), Chaigeley Manor. Lancashiie (Winstanley), 

 Kendal (Gough), Newcastle (Alder). 



