T. D. A. COCKERELL : A SEPTEMBER WALK. 



September 10th. Prescot to Rainhill. — Limncea peregra was 

 common in a large pond or reservoir. I noticed the trail of a slug 

 on the pavement at Rainhill, and following it up, found in the road 

 a variety of Limax flavus. It was adult, and resembled the typical 

 form in its markings, but the ground colour was very light, almost 

 white. The slime was thick and yellow. The extreme abundance of 

 Equisdum arvense by the roadside, both here and round Warrington, 

 seemed rather remarkable. I never saw so much of it in the south. 



Rainhill to Warrington. — 



Planorbis albus (on Nuphar lutea in a Arion hortensis v. fasciata. 



pond). Helix rotundata. 

 Arion hortensis var. (similar to that Arion ater v. rufa (a very large one). 



found near Prescot). Limax agrestis, type. (In the Liver- 

 Hyalina radiatitla (one). pool brickfield the type far out- 



Pisidium pusillum. numbered v. sylvalica ; here the 



Planorbis contortus. reverse was the case. ) 



Limnaa peregra. Arion ater (two brown-black speci- 



Limax agrestis v. sylvatica. mens). 



Motacilla lugubris and Hirundo rustica seemed more abundant than 

 I have seen them in the south, especially the former. , The Wagtail 

 was also very common in Cheshire. 



The most striking point about Lancashire conchology, as far as 

 I was able to investigate it, is the absence or extreme rarity of every 

 species of Helix whatsoever, H. rotundata alone excepted. Hyalina 

 (or, as most British conchologists call it, Zonites) was much less rare. 

 Bulimus acutus being really a Helix, perhaps finds Lancashire as 

 unpleasant as the others do, and on this account does not inhabit 

 that coast, but as to the cause of this dearth of a large and usually 

 prominent genus I am not quite clear. 



CHESHIRE. 



Warrington to Knutsford. — The Mollusca observed included : — 



Helix rotundata. Planorbis carinatus. 



Hyalina cellaria. Limncea pereg7-a. 



Limax agrestis v. sylvatica. Limncea truncatula. 



Hyalina nitidula. Limax lojvis. 



Cochlicopa lubrica. Hyalina nitida. 



Carychinm minimum. (b) Arion ater (very young, pale). 



Helix hispida. Hyalina alliaria. 



H. concinna. Arion hortensis v. fasciata. 



Limncea peregra var. Hyalina crystallina (one under a brick). 



Pisidium fontinale. Physa fontinalis. 



{ft) Limncea palustris. Planorbis albus. 



Sphwrium corneum. Pisidium pusillum. 



Those from (a) to (b) inclusive were all found in or round a small 

 pond on the left-hand side of the road, with Nuphar lutea, Le?n?ia 



Naturalist, 



