OLDHAM : LAND AND FRESHWATER MOLLUSCA OF CHESHIRE. 121 





records it from Tarvin Road and Lache Lane, Chester. 

 Captain Farrer has found it in a ditch at Woodchurch. 



Planorbis fontanus (Lightfoot). Canal near Hoole Lane Bridge, 

 Chester (Bellars). Ashley Mill, Hale, Ringway, Dunham, 

 Peelcauseway, Millington, Northern Etchells (Milne and 

 Oldham). Alvanley (Nixon Coll.). Birkenhead, Bidston 



J 



). Great Budvvorth (J 



Adlington, Handforth, Bramhall. 



Planorbis fontanus v. albida Nelson. Ashley Mill in 1885 



(Milne and Oldham). 



Planorbis nautileus (L.). Upton near Chester (Bellars). 

 Great Meols (Byerley). Ashley, Ringway, Warburton, Hale ; 

 specimens from the last locality often scalariform (Milne and 

 Oldham). Manley (Nixon Coll.). Leasowe, Bidston (W.J.F.) 

 Mollington (J.B.T.). High Lane (K.H.J.). Adlington, Knuts- 

 ford, Woodley. 



Planorbis nautileus v. crista (L.). Ringway, Bow Green near 

 Bowdon ; Bowdon Vale (Milne and Oldham). 



Planorbis albus (L.)- Plentiful in canals and ponds everywhere; 

 usually on Potamogeton. 



Planorbis parvus Say. Only recorded from Leasowe. * Was 

 abundant in 1850, in a ditch near Leasowe. The district 

 having been flooded by the inroad of salt water during stormy 

 weather at the latter part of that year, when the embankment 

 was broken through, this species has disappeared ' (Byerley fide 

 Cameron and Marratt). Captain Farrer informs me, however, 

 that he obtained one or two specimens at Leasowe in 1890. 



Planorbis spirorbis Mull. Plentiful and universally distributed. 



Planorbis vortex (L.). Even more plentiful than the last species. 



Planorbis carinatus Mull. Blacon Point, Chester (Bellars). 



Ashley, Hale, Peelcauseway, Rostherne, Millington, Knutsford 

 (Milne and Oldham). Great Budworth (J.G.M.). Oxton 

 (W.J.F. ). Bar Mere, Handforth, Peak Forest (anal from 



Woodley to Marple. 

 Planorbis umbilicatus Mutt Tarvin Road and Queen's Park, 

 Chester (Bellars). Ditches in Sale meadows, Baguley (Milne 

 and Oldham). Helsby Marsh (Nixon Coll.). Marple (R.C.). 

 Rostherne Mere, Knutsford, Brooklands, Quoisley Mere, 

 Ellesmere Canal near Bickley. 



Planorbis umbilicatus v. rhombea (Turt.) Ditch behind the 



Asylum, Chester (f.B.T.). Canal between Dukinfield and 

 Hyde (R.Ci. 



April 1896. 



