1 63 



NOTES on MOLLUSCA. 



Helix aspersa monst. cornucopia. — It may be as well to put on 

 record that a beautiful dead shell of this monstrosity was found about 1 865 

 in the Greater Periwinkle (Vinca major L.) on the south side of the house 

 at Bottesford Manor, Brigg. It was very much like the specimen figured 

 in Taylor's 'Monograph' (1894-1900), p. 26. If my memory serves me, for 

 I was but a boy then, the banding was (i23)(45), and the apex was much 

 denuded. What became of it I have no idea. We used to keep snails 

 alive in boxes and breed them at the time, and this shell was a great find, 

 but we vainly hunted for a living- specimen.— E. ADRIAN W T OODRUFFE- 

 Peacock, Cadney, Brig-g, 22nd April 1901. 



Helix aspersa var. exa/bida. — I do not know whether this variety 

 has been recorded for any inland station in Lincolnshire. While out as the 

 dew was falling- on 18th April 1901, studying the local banding of 

 H. nemoralis, I took a denuded but only two-thirds grown specimen at 

 Kirton, on the Redbourn road. It is the first II. aspersa I have seen abroad 

 this season. Just beyond the fence from which H. aspersa var. exa/bida 

 Menke was crawling is an old but shallow quarry in the Kirton Limestone ; 

 it is my only locality for H. itala L. I once found a dead specimen on Manton 

 Warren, but no other specimens rewarded a careful search. — E. Adrian 

 Woodruffe-Peacock, Cadney, Brigg, 22nd April 1901. 



Acmaea testudinalis on the Yorkshire Coast. — When I read Mr. 

 Braim's account of his searches for this species on the Yorkshire coast, 

 given in ' The Naturalist ' for December 1900, I came to the conclusion 

 he had not seen my notes on the species, published in the January number, 

 1885. He will there read of this shell : ' Unusually abundant on the Lias 

 Scars below Huntcliff. Not uncommon on the Redcar Scars and on the 

 south shore at Scarborough.' I noticed' the species last week at Scar- 

 borough, where any collector may easily find it at the time of spring-tides, 

 and for that reason send this brief note. 



I don't think Mr. Braim is correct in speaking of the 'southward 

 rambles ' of this shell. Species extend their distribution in a northerly 

 direction only in the northern hemisphere. Our Yorkshire race of Aoiueas 

 we should rather regard as laggards than adventurers. — W. C. Hey, West 

 Ayton, Yorkshire, 10th February 1901. 



Thrush Stones at Cadney, Lines. N. — These are common enough in 

 all parts of the country, and are constantly observed by those who have 

 eyes that see. Stones are rare in alluvium and peat, only being found 

 where they have been carried by man. In such places the frag-ments of 

 hundreds of shells may be found together. I came across such an 

 uncommon collection of shells the other day that, perhaps, they are worth 

 noting. The Thirty Foot Drain at Cadney, Lines., flows under an arch 

 with a stone coping, which carries the towing-path, before it flows through 

 a door into the river Ancholme. On Friday, the 29th March, there w as a 

 heavy fall of wet snow for some hours, and on the isl April I passed along 

 the north side of the Thirty Foot. The stonework on the landward side of 

 the drain head has been used by a Thrush or Thrushes for breaking up 

 snail shells. There were plenty of Helix nemoralis^ with a tew //. aspersa ; 

 H. arbustoru 11/ was in fair numbers, and //. cantiana represented by halt 

 a dozen specimens. These are all to bo found along with //. virgata on the 

 hanks of the Thirty Foot, There were some very fine empl v specimens of //. 

 virgata vars. iypica and radiata, but none had been broken as far as I could 

 discover. They were lying 1 amongst the de'brisj and one could only suppose 

 had been carried there by the same agent which had carefully collected the 

 other species. Along with them were empty specimens of //. nemoralis 

 ami //. aspersa more or less weathered, but these, though still entire, had 

 been tried for their molluscs ami found wanting, for they showed signs of 

 beating. I could not detect such marks on the shells of //. virgata. K. 

 ADRIAN WOODRUFFE-PeACOCK, Cadney, Brigg, 1.6th April 10,01 . 



i»k>i June 1. 



