176 LAND AND FRESH-WATER MOLLUSKS. 
S. putris, I find more generally on plants in bogs 
and maritime marshes; on plants and stones by 
mountain rills and lakes. It occurs with the last 
species in the Copford beds. 
Succingea oBtonca—(the Oblong Amber Snail) 
(Pl. X., fig. 109) —is one of our rarities, and is 
markedly distinct from the two other species ; 
it is always much smaller in size, with three or 
four distinctly separated whorls; the aperture is 
oval, and small in proportion to the size of the 
shell, being as long as the spire. The form of 
the shell of this species closely resembles that of 
Limnea truncatula, but the absence of a reflected 
lip on the columella at once distinguishes it. 
S. oblonga inhabits ditches near the coast, on 
sand-dunes near the sea, covering its shell with 
a viscous secretion, and in winter burying itself 
in the sand. There are two inland stations for 
it, both in Ireland: turf bogs, Finnoe, co. Tip- 
perary ; and damp woods, near Armagh: it is 
also found in woods in Central France, where it 
is nearly always met with slightly beneath the 
humus, which probably furnishes it with moisture, 
which it requires. It occurs near Swansea, 
Bideford, Berwick, Glasgow, and Cork. It is 
diffused throughout Europe, and is fossilized in 
the Pleistocene freshwater marls of Clacton, 
and in the Mammaliferous Crag at Bulcham and 
Maidstone. 
