CONCHOLOGICAL NOTES FROM SOUTH BEDS. 
153 
CLASS II. GASTEROPODA. 
ORDER I. PECTINIBRANCHIATA. 
FAMILY P ALUDINIDiE. 
Bitliynia tentacula, Limbury. 
ORDER II. PULMONOBRANCHIATA. 
FAMILY LIMNZEIDiE. 
Planorbis albus, Pools at Limbury and Harlington. 
vortex, Pools at Limbury. 
curneus, Pools and Streams, Limbury, Biscot, and Luton Hoo Park. 
contortus, Pools, Limbury. 
complanatus, Pools, Limbury. 
nitidus, ,, ,, 
marginatus, ,, ,, 
nautileus, Pools, Limbury ; Hitchin End, with Pisidium pusillum. 
Pliysa fontinalis, Luton Hoo Lake. 
fluviatilis, sources of tlie River Lea, Leagrave. 
Limnea peregra, Limbury, Biscot, Luton Hoo Lake. Near Dunstable. 
R. Rogers. 
var. ampullacea, Luton Hoo Lake, 
var. oblonga, Limbury. 
auricularia, Luton Hoo Lake, very fine. 
var. minor, with the type, Luton Hoo Lake, 
stagnalis, common. 
var. turgida, Limbury. 
palustris, Limbury. 
Aucylus lacustris, Reed Pond, Sundon, Limbury. 
TERRESTRIAL. 
FAMILY LIMACIDiE. 
Arion ater, Luton, 
flavus, ,, 
hortensis, Luton. 
var. subfusca, Luton. 
Bourguignati, General Cemetery, Luton. 
Limax agrestis, Luton. 
var. sylvatica, near Luton, 
maximus, 
var. fasciata, Luton. 
FAMILY HELICIDiE. 
Succinea putris, Limbury Marsh, Flitwick Marsh. 
Yitrina pellucida, Luton, Limbury. 
Zonites cellarius, near Luton, Someries Castle, 
nitidulus, Garden, Luton, 
crystallinus, Limbury. 
Helix aspersa, common, 
nemoralis, common, 
var. castanea, 
var. libell.. 
00000 
00000 
00300 
00300 
00300 
Luton. 
var. ,, 
var. rubella, 
var. carnea, 
hortensis. 
var. carnea, 
var. lutea, 
arbustorum, Luton. 
var. alpestris, Totternhoe Mead 
rufescens, Luton. Dunstable Downs, 
var. rubens, Luton. 
00000 
123 45 
Luton. 
Dunstable Downs. 
R. 
Dunstable Downs. R. Rogers. 
R. Rogers. 
Rogers. 
