3i8 



FIELD NOTES. 



MOLLUSCS. 



Mollusca at Caistor, Lincolnshire. — The following- is a 

 complete list of the mollusca noted at Caistor on the excursion 

 of the Lincolnshire Naturalists' Union on 28th Aug-ust 1902 : — 



Arion ater Crosby Pond, Huiidon, and Pelham Wood. 



Agriolimax agrestis. Common everywhere. 



Vitrea {Hyalinia) cellaria var. albiiia. Pelham Wood. 



Pyraiiiidula [Helix) rotundata. Pelham Wood. 



Valloiiia {Helix) pulchella. Pelham Wood. 



Helix aspersa. Croxby, Hundon. 



Helix iiemoralis vaLT. libelUda. Hundon, Pelham W'ood, Nettleton. 



Var. rubella. Hundon, Pelham Wood. 



Helix hortensis var. lutea. Hundon. 



Helicigona {Helix) arbustonim. Croxby, Hundon, Pelham Wood. 



Var. minima. Hundon. 



V a.r. Jlavescens. Hundon, Pelham Wood. 



Var. alpestris. Pelham Wood. 



Hygromia (Helix) rufesce/is. Hundon, Pelham Wood. 



Var. albocincta. Hundon, Pelham Wood. 



Hygromia {Helix) hispida. Nettleton, Hundon, Pelham Woods. 



Var. hispidosn. Nettleton, Pelham Wood. 



Helicella {Helix) caperata. Pelham Wood. 



Helicella {Helix) itala. Rothwell, Caistor. 



Helicella {Helix) virgata. Croxby, Thorseway, Caistor. 



Bidiminus obsatriis. Nettleton, Pelham Wood. 



Pupa niuscorum. Nettleton. 



Cochlicopa lubrica var. ovata. Pelham Wood. 



Succinea putris. One, Hundon. 



Succinea elegans. One, Caistor. 



Limnea peregra. Hundon. 



Physa fontinalis. Croxby Pond. 



Velletia lacustris. Croxby Pond. 



Sphcerium lacustre. Croxby Pond. 



Pisidium fontinale. Croxby Pond. 



Pisidium pusillum. Caistor. 



Pisidium obtusale. Croxby Pond. 



Pisidium nitidum. Croxby Pond. 



Planorbis albus. Croxby Pond. 

 — C. S. C.-VRTER, Louth. 



Mollusca at Qrantham. -Of the 67 species of Mollusca 

 noted at Grantham on the occasion of the excursion of the 

 Lincolnshire Naturalists' Union on 30th July 1902, the following, 

 which have been verified by Mr. J. W. Taylor, are the best : — 

 Arion circumscriptus, Great and Little Ponton; Liinax flavus, 

 Court Leys ; Vitrea radiatiila, one at Great Ponton ; Helicigona 

 lapicida (dead), Great Ponton ; Helicella cantiana. High Dyke, 

 Great Ponton ; Pyraniidula rupeslris, Great Ponton, on Lincoln- 

 Naturalist 



