278 ADAMS: NOTES ON THE EASTERN COUNTIES. 



I once observed H. 7iemoralis ten and fifteen feet from the 

 ground on the trunks of small trees. 



At Sible Hedingham I met with the only specimens of 

 H. lapicida that I record for the eastern counties. About this 

 neighbourhood the albino form of H. rufescens was almost 

 universal. 



A pond at Little Tey furnished, besides other things, a 

 specimen of ^. lacustre, B. leachii, one specimen of ^. lacustiis 

 var. moquiniana, and a specimen of P. hypnoriim. A. lacustris, 

 with the exception of a single dead specimen of the typical 

 form in the Little Ouse at Brandon, I did not meet with again ; 

 indeed, the genus does not seem extensively represented in these 

 parts, as I have only one record of A. fluviatilis in the whole 

 excursion in the Wensum near Norwicli, though several likely 

 streams were crossed. P. hypnoriim is often found associated 

 with P. spirorbls and Z. glabra^ as Mr. Nelson has pointed out 

 in the Journal of Conchology, vol. iii, p. 115, but in this 

 instance I found neither. I think this is the only occasion that 

 I have taken B. leachii in a pond. 



In the Colne at Halstead B. leachii deserves mention, and 

 L. Icevis which was found on flags by the water. 



At Colchester H. cantiana appeared more deeply coloured 

 than I remember to have seen it. In the neighbourhood the 

 white variety is not uncommon. 



From Ipswich to Saxmundham H. nemoralls and H. hor- 

 tensis became gradually scarcer in spite of rain which had fallen. 



Near Woodbridge, one spot — a depression in a hedgebank 

 full of damp leaves and a decaying nettle — afforded V. pygmcca^ 

 V. piisilla, H. aciileafa, and H. pyg'iicea. 



Along the coast from Dunwich to Southwold there is a 

 succession of salt dykes and marshes, where H. ventrosa and 

 Z. rudis var. tenebrosa swarm amongst the weed in countless 

 thousands. Only three specimens of M. myosotis rewarded 

 my expectant search. 



J.C, vl, Oct., 1890. 



