334 JOURNAL OF CONCHOLOGY, VOL. II-, NO. II, JULY, I906. 



the grassy denes of the east coast. The most satisfactory theory put 

 forward to explain the phenomenon is that estuarine arms of the 

 Wash formerly extended as far as this neighbourhood, along the 

 valleys now occupied by the Little Ouse and Lark streams. The 

 moUuscan fauna is extremely meagre ; the only species I have met 

 with on the warrens 2x0. Helicella caper ata^ Vallonia excentrica, Jam- 

 inia muscorum, Vertigo pygmcea, and Pisidium gassiesianum. 



Along the valley of the Little Ouse there are patches of peat-land, 

 e.g., at Rushford, Knettishall, Hopton, and Redgrave. At Knettis- 

 hall the peat is remarkably rich in the fossil remains of freshwater 

 molluscs and those terrestrial species usually inhabiting wet places. 

 This moUuscan " cemetery " contains the shells of Agriolimax Icevis, 

 Hygroinia hispida, Cochlicopa lubrica. Sued /tea elegans, Acroloxus 

 lacustris, Limncea s(agnalis, L. pereger, L. palustris, Planorbis spir- 

 orbis, P. Cixrinatus, P. corneas, P. umbilicatus, P. albns, Bithynia 

 tentaculata, B- leachii, Physa fontinalis, Valvcita piscinalis, and 

 Pisidium corneum. All of these species except Acroloxus lacustris 

 are equally abundant in or near the neighbouring ditches. For the 

 capture of fluviatile species, the lower parts of the Little Ouse, Lark, 

 and Stour, provide good hunting-grounds. The following list of 

 eighty-three species is certainly not a complete enumeration of all 

 that occur in West Suffolk. Several others have been elsewhere 

 recorded, but I have excluded all records except those of recent date. 

 The species in the list, with the one exception of Ena inontana, have 

 been met with in the localities mentioned within the last two or 

 three years. 



I beg to offer my sincere thanks to Messrs. W. R. and G. W. Church 

 of Bacton, for help in collecting shells from various localities; to Mr. 

 Claude Morley, F.E.S., Ipswich, for a list of species found by him at 

 Brandon and Tuddenham ; and to Mrs. Caton and Mr. J. H. Sikes 

 for lists of shells taken at Great Fakenham and Bury St. Edmunds. 

 Records quoted from these lists are marked (M.), (C), and (S.), 

 respectively. I am also indebted to the Rev. E. M. Bloomfield, of 

 Guestling, near Hastings, for some records of shells found in the 

 neighbourhood of Bury St. Edmunds by the late Mr. Skepper about 

 1865 and 1866. I have not, however, quoted from this list (except 

 in the case of Enn inontana^ for reasons already mentioned, but I 

 have been guided thereby to ^veral productive localities which would 

 otherwise have been missed. 



The numbers placed before locality names refer to the four sug- 

 gested divisions of the vice-county. 



Limax maximus Linne. — (i) Wetherden, Badwell Ash, Elms 

 well. (2) Rougham. (4) Bury St. Edmunds. 



