271 



NOTES on LINCOLNSHIRE MOLLUSCA. 



Pisidium henslowanum and Band-Formula 12045 of Helix 

 nemoralis near Brigg. — Other specimens of interest which I also saw at 

 Cadney were Pisidi um henslowanum and the curiously and somewhat scarce 

 banded form of Helix nemoralis (12045). The former was taken by Mr. 

 Peacock at Cadney, 10th March 1900 ; the latter were found in 1900 living 

 at Bottesford and dead at Ingoldmells in 1901. — C. S. Carter, 8, Bridge 

 Street, Louth, 30th June 1902. 



Pisidium henslowanum in Lincolnshire.— Although easily recog- 

 nisable and far from scarce, this mollusc — P. henslowanum (Shepp.) — which 

 I took from one of the drains by the Ancholme, near Appleby, in April last, 

 does not appear to have been previously published as a Lincolnshire species. 

 The Rev. E. A. Woodruffe Peacock, however, has a specimen taken at 

 Cadney in 1900, and he has recently communicated to Mr. C. S. Carter, of 

 Louth, a caddis-case from South Kelsey, on which are four of these shells. 

 Mr. J. W. Taylor has obligingly confirmed the naming of my specimen. — 

 H. Wallis Kew, London, 10th July 1902. 



Mollusca from Grantham District. — As comparatively little work 

 among the mollusca of South Lincolnshire has been done, the following 

 list of shells, collected in the immediate neighbourhood of Grantham, and 

 sent to me on 7th June by Mr. R. Worsdale, may be of interest: — 



Hyalinia cellaria var. albina. One specimen. 



Hyalinia helvetica. Hyalinia nitidnla. 



Hyalinia crystallina. 



Helix rotundata. Helix pulchella. 



Helix lapicida. Four very good specimens, ' found in one spot on a wall 

 at Great Ponton.' Mr. Worsdale remarks that he could not find a single 

 specimen a yard from the spot. 



Helix nemoralis vars. libellula (123X45) anc * rubella : : 345, 00300. 



Helix hortensis vars. lutea 00000, 12345 anc * roseolabiata 00000. 



Helix arbiistorum. 



Helix cantiana. One immature specimen found at Somerby Hill. 

 Helix rufescens. Helix hispida. 



Helix itala. ' Railway embankment near Grantham.' 

 Helix virgata vars. albicans and subalbida. Somerby Hill. 

 Buli minus obscurus. 



Pupa secale. One specimen. Pupa muscorum. 



Clausilia bidentata var. everetti. 

 Cochlicopa lubrica var. lubricoides. One specimen. 

 Ancylus fluviatilis. 



The following were taken from the canal between Grantham and 

 Harlaston : — 



Succinea elegans. 



Planorbis vortex. Planorbis carinatus. 



Limncea auricularia var. albina. One specimen. 

 Limncea palustris. 



Vivipara vivipara. 

 Byth in ia ientaca la ta . 



Valvata piscinalis. 

 Sphcerium corneum. 

 Dreissensia polytnorpha. 

 — C. S. Carter, 8, Bridge Street, Louth, 30th June 1902. 



NOTE on YORKSHIRE MOLLUSCA. 

 Pupa ringens at Flamborough Head.— Near the Lighthouse are 

 some slopes of boulder clay covered with moss through whic h water 

 trickles. Here I found Pupa ringens in abundance last June. 1 notice this 

 species prefers moss through which water passes, whereas I <•< 

 vertigo affects moss by stagnant pools. — W. C. Hey, West Ayton, oth 

 July 1902. 



1902 August 1. 



