BULIMUS. 231 



is low and flat : therefore I do not think it possible that 

 H. obvoluta could have spread or wandered from the 

 Ashford Woods to Ditcham/^ Stoner Hill appears to 

 be six miles distant from Ditcham Wood. This species 

 inhabits the North of France, having been found by Dr. 

 Baudon at Morainval Wood near Mouy ; and if H. Car- 

 tusiana is British, the present species has quite as good 

 a claim to the same privilege. 



Genus V. BU'LIMUS*, Scopoli. PI. VII. f. 1, 2. 



Body long, always containable -within the shell : tentacles 4 : 

 foot rather long and narrow. 



Shell cylindrically- conic or oblong, not thin or \qtj glossy : 

 whorls drawn-out : spire long : mouth oval : outer lip usually 

 reflected, and sometimes (but not in British species) fiunished 

 with tooth-like tubercles : umhilicus exceedingly small and 



I will not inflict upon my readers a repetition of the 

 stale and uninteresting controversy which formerly 

 vexed the conchological world as to the origin and mean- 

 ing of the name of this genus. A few words will suffice 

 to give its history. The celebrated French naturalist, 

 Adanson, proposed, in 1757, for a small freshwater mol- 

 lusk of Senegal, a new genus, which he called Bulin, being 

 a local word. This name was capriciously or inadvertently 

 changed by Scopoli into Bulimus; and it was used by 

 him, and subsequently adopted by Bruguiere, to receive 

 a heterogeneous assemblage of land and freshwater 

 shells, having no affinity with Adanson's species, or with 

 any of those to which the genus is now restricted. Dra- 

 parnaud in 1801 was the first to apply the generic word 

 to its present and generally recognized signification. 



* A corruption of BuUn, an African word. 



