OLDHAM : LAND AND FRESHWATER MOLLUSCA OF CHESHIRE. 12$ 



Limnaea auricularia v. acuta Jeff. Gawsworth Fishponds (E.C.). 



Parkgate. 



Limnaea stagnalis (L.). In canals and ponds throughout the 



county. Mr. Tomlin has extremely eroded and distorted speci- 

 mens from ponds at Upton, and I have found similar shells in a 

 shallow pond at Gernet, near Macclesfield. Under favourable 

 conditions this species attains a great size. In 1884 I placed 

 some shells averaging 37 mm. in length in a pit in Baguley, and 

 found that their descendants had attained an average length of 

 47 mm. by 1890 (ef. Milne and Oldham). 



Limnaea stagnalis v. lacustris Stiider. Upton near Chester 

 (J.B.T.). 



Limnea palustris (Mull.). In ponds and ditches throughout the 

 county. 



Limnaea palustris m. decollatum Jeff. Wilmslow (L.E.A.). 



High Lane (K.H.J.). Millington near Bowdon. A specimen 

 of this monstrosity, collected by the Rev. H. G. Barnacle at 

 Chester, is figured by Mr. J. W. Taylor (* Monograph of the 

 Land and Freshwater Mollusca of the British Isles/ Part i r 



P- 3°)- 

 Limnaea truncatula (Mull.). Plentiful in ditches and swampy 

 places. At Romiley I have taken ventricose specimens with 



1 



expanded lips. 



Limnaea glabra (Mull.): Local, but generally plentiful where 

 it occurs. I have always found this species associated with 

 B. hypnorum, P. spirorbis, and P. pusillnm. Tarvin Road. 

 Chester (Bellars). Ditch between Saughall-Massie and Greasby, 

 and at Higher Tranmere ; truncated specimens in a pond 

 between Eastham and Willaston (Byerley fide Cameron and 

 Marratt). Baguley (Milne and Oldham). Pond between Lymm 

 and Thelwall (LEA.). Hale Moss (H.W.). Upton near 

 Chester (J.B.T.). Marston near Northwich ; Mobberlej . 



Ancylus fluviatilis MulL In canals and running streams 



throughout the county. 



Ancylus fluviatilis v. gibbosa Bourg. Woodchurch (W.J.F.) ; 



Disley (K.H.J.). 



Ancylus fluviatilis v. albida Jeff. Woodchurch (W.J.F.). 



Velletia lacustris (E). On leaves of Nymphaa, Nuphar, and 

 Potamogeton in ponds, canals, and meres. Blacon Point, 

 Chester Canal (Bellars). Ponds at Mere, Cotterill Dough, and 

 Hale (Milne and Oldham). Delamere (Nixon Coll.). Pond, 

 Rostherne (L.E.A.). Canal, Congleton (E.G.). Meols, Leasowe, 



April 1896. 



