154 



NOTES. 



On a Sinistral ]\roNSTEOsrrY of Purpura lapillus (Linn.). {Read 

 12th June, 1914.) — So far as I am aware, there are only two examples of 

 the sinistral form of Purpura lapillus (Linn.) whose existence in this 

 country is publicly known. Further examples may occur in private 

 collections or in museums abroad, but I have not come across any record 

 of them. The two examples above referred to are, firstly, a specimen in 

 the collection of the late Mr. Bean, of Scarborough, and now in the 

 museum of that town. The circumstances under which this specimen 

 was procured are related in Jeffreys, Brit. Conch., vol. iv, p. 278. 

 A second occurs in the collection of Dr. A. M. Norman, now in the 

 British Museum, and the note attached states that it came from 

 " Llanfairfechan, N. Wales, 1875 (Mrs. Stebhins) ". The shell is 'dead', 

 but perfect. I have the pleasure to show to the Society a third specimen 

 which has very recently come into my hands. It was received from 

 a correspondent at La Rochelle, and occurred, unnoticed hj the sender, in 

 a parcel of between eighty and ninety specimens. It is not quite mature, 

 the outer lij) showing no sign of thickening, but is perfect in all other 

 respects. It is regularly spirally ildged, ridges somewhat flattened, 

 ground colour dirty white, with orange and brown colour-bands. Length 

 23 mm., breadth 15 mm. 



A. H. Cooke. 



OccDRRENCE OF Chondrula quadripens (Mull.) IN BRITAIN. {Read 

 1 2th June, 1914.) — A few days ago Mr. Lindley H. Jones, of Norwich, 

 sent me for determination a specimen taken on the outskirts of 

 Whittingham Wood, near Norwich, that Mr. G. K. Gude kindly identified 

 as Chondrula quadridens (MiilL). One naturally suspected some box 

 had been employed when collecting that had f)reviously done service 

 abroad and had secreted some of its contents in its recesses. Mr. Jones, 

 however, in reply to inquiries, states that he was using a glass tube, so 

 that accidental previous inclusion was out of the question, but he adds 

 the very pregnant suggestion " that as a large number of pheasants are 

 reared in Whittingham Wood, it [the shell] might possibly have been 

 introduced with their food. The place where I found it is quite half 

 a mile from the main road ". This explanation seems to me not only to 

 elucidate the occurrence in question, but also to clear up the finding in 

 similar situations at Church and near Stoneyhurst (Lancashire) of Abida 

 quinquedentata. 



B. B. Woodward. 



