S. C. COCKERELL : BRITISH VARIETIES OF LIMNjE^E. 45 



specimen of L. palustris from Minster, near Sandwich, with the 

 same expanded lip. The characteristic spiral lines in L.peregra 

 var. pida appear frequently in Physa fontinalis and other species. 

 Dr. Jeffreys mentions a Z. truncatula affected in the same way, 

 and I have streaked L. glutinosa from Reading, and L. palustris 

 from Barnes and Shortlands, W. Kent. 



I have already recorded in the ' Zoologist ' the occurrence 

 of L. peregra var. caiidida in the pond at Hampton Court and 

 of L. auricidaria var. ampla in the Thames at Hampton. There 

 is in my collection a specimen of L. truncatula var. ventricosa 

 which I took at Bickley, Kent, and Mr. Lionel E. Adams has 

 generously given me a fine example of L. palustris var. corvus 

 from Coggeshall, Essex. My brother (L. M. Cockerell) found 

 two interesting monstrosities of L. peregra at St. Mary Cray, 

 Kent, the one being scalariform, and the other furnished with a 

 triple lip. Similar to the last is a specimen from Chislehurst 

 which has a double lip. Some specimens of Z. palustris pro- 

 cured last summer at Shortlands, Kent, are an extremely interest- 

 ing form, for which ' angulata ' would be an appropriate name. 

 With a description of this I will bring these notes to a close. 



Limnaea palustris var. angulata n.v. Shell turreted, with 

 five tumid whorls bluntly angulated at the periphery. 

 Suture deep. Length i6 mill., breadth lo mill. 

 Aperture, which is oblong and nearly twice as long as 

 the spire, length lo mill,, breadth 6 mill. 



There is a stream running through the pond which also 

 contains Linincza peregra, Sphcerium corneum, Planorbis con- 

 tortus, and Physa fontinalis. 



Vertigo moulinsiana in Notts. — Among a number 

 of minute shells gathered by Mr. C. T. Musson of Nottingham, 

 in April, 1883, from the rejectamenta at Carlton-on-Trent, I 

 found specimens of this species. In the same lot were a few 

 Vertigo pygmcBa, V. puslla, &c. — J. W. Taylor, Mar. 23, 1886. 



