AURICULIDA. 45 
AURICULID#. 
CARYCHIUM MINIMUM, Miller. 
Generally distributed. Common amongst leaves and under 
sticks and stones in woods and hedges. Often occurring in 
large numbers in river drift. Mr. F. A. Knight observes! 
“The smallest British land shell, Carychium minimum, a 
species of no great rarity, but one that, on account of its 
extreme minuteness, is probably often overlooked, is, espe- 
cially in some years, very plentiful under stones in damp 
places among the trees (in Weston Wood). Its size may 
be estimated from the fact that it took 105 specimens to 
cover a threepenny-piece, and that all these together weighed, 
when dead, exactly half-a-grain.” 
Puytra myosoris, Draparnaud (= Mcelampus myosotis, Dra- 
parnaud ; Alexia myosotis, Draparnaud ). 
An estuarine species, to be found under stones immediately 
above high-water mark at the mouths of rivers. 
North. 
In the Avon, near Bristol ; Forbes and Hanley. 
Banks of the Avon, near Pill; Cundall. 
Abundant in the Avon, below the Hotwells ; Morman. 
Var. denticulata, Montagu ( = Melampus denticulatus, 
Montagu) 
Banks of the Avon, near Pill; Cundall. 
Var. ringens, Turton. 
Banks of the Avon, near Pill; Cundall. 
OVATELLA BIDENTATA, Montagu (=Melampus bidentatus, 
Montagu ;=Leuconia bidentata, Montagu). 
It frequents crevices of rocks, near high-water mark. 
Banks of the Avon, near Pill ; Cundall (with a query). 
Var. alba, Turton. 
Banks of the Avon, near Pill; Cundall (with a query ). 
LIMNAZIDZ. 
ANCYLUS FLUVIATILIS, Muller. 
On stones in streams and rivers. Sometimes attached to 
the larger bivalves. Always in running water. A somewhat 
1. ‘*The Sea-Board of Mendip,”’ p. 137. 
