A HISTORY OF KENT 



The two species of more particular interest in the assemblage, 

 which is characteristic for the south-east of England, are Helicella cartu- 

 siatia and Helix pomatia. The former is now a coastal species, practically 

 confined to Kent and Sussex, but it formerly ranged into east Kent, being 

 found in rain-wash deposits at Otford, Exedown and Greenhithe ; it has 

 also been obtained from a post-tertiary deposit at Felstead in Essex, and 

 a single dead (and possibly fossil) example has been picked up at Long 

 Stratton, Norfolk : it has even been reported from more remote locali- 

 ties, though these are doubtful records. The ' Roman snail ' {Helix 

 pomatia), long thought to have been introduced by the Romans, but now 

 known to have been a denizen of this country before their arrival, is 

 confined to the chalky ridge of the North Downs, along which it is met 

 with at intervals to as far east as Charing, so that here as elsewhere in 

 England it stops short of the sea. 



A noteworthy absentee is Dreissensia polyt7iorpha, so plentiful in the 

 Thames further west, but nowhere recorded in Kent. 



An introduction worthy of remark and one which may perhaps 

 ultimately become established, is the pretty little conical Helicella elegans, 

 for a colony of this species brought over from southern Europe has 

 been settled near Dover, where it appears to be flourishing and spreading. 



A. GASTROPODA 



I. PULMONATA 



a. Stylommatophora 



Testacella hal'iotidea, Drap. Sevenoaks ; Beck- 

 enham 



— scutulum, Shy. Faversham ; Folkestone ; 



Mabledon 

 Limax maximus, Linn. 



— Jiavus, Linn. 



— arborum, Bouch. -Chant. Local 

 AgrioUmax agrestis (Linn.) 



— lavis (Mull) 

 Amalia sowerbii (F^r.) 



— gagates (Drap.). Chatham ; Wichling 

 Fitrina pellucida (Mull.) 



Vitrea crystallina (Mull.) 



— alUaria (Miller) 



— glabra (Brit. Auct.) 



— cellaria (Mull.) 



— nitidula (Drap.) 



— pura (Aid.) 



— radiatula (Aid.) 



— nltida (Mull.) 



— fulva (Mall.) Local 

 Ar'ion ater (Linn.) 



— hortensis^ Ylr. 



— circumscriptus, John. 



— intermedius, Norm. Bromley 



— subfuscus (Drap.). Wichling 

 Punctum pygniaum (Drap.) 



Pyramidula rupestris (Drap.). Sevenoaks ; 

 Dover 



— rotundata (Mull.) 

 Helicella v'lrgata (Da C.) 



— itala (Linn.) 



— caperata (Mont.) 



— cantiana (Mont.) 



— cartudana (Mull.) 



Hygromia fusca (Mont.). Maidstone 



— granulata (Aid.) 



— hhp'ida (Linn.) 



— rufescens (Penn.) 



Acanthinula aculeata (Mull.). Local 

 Vallonia pulchella (Mull.) 

 Helidgona lapicida (Linn.) 



— arbiistorum (Linn.) 

 Helix aspersa (Mull.) 



— pomatia, Linn. Brastead ; Cudham ; 



Otford ; near Maidstorte ; Stalisfield ; 

 Charing 



— nemoralis, Linn. 



— hortensis, Moll. 

 Buliminus obscurus (Mull.) 

 Cochlicopa lubrica (Mull). 

 Axeca tridens (Pult.) Local 

 Cacilianella acicula (MqII). 



Pupa secale^ Drap. Between Dover and 

 Folkestone 



— cylindracea (Da C.) 



— muscorum (Linn.) 



Sphyradium edentulum (Drap.). Keston 



