102 ASHFORD : LIST OF CHRISTCHURCH MOLLUSCA. 



to year. The majority belong to the form albicans, the rest 

 to subalhida. Isolated examples occasionally at Mudeford 

 and Highcliff. 

 H. caperata. — Widely scattered over the whole coast-belt 

 from Barton to Boscorabe, on arable land as well as un- 

 cultivated ground. Their persistence on farm land is 

 striking, seeing that the plough sends them summarily to 

 hibernation in October, and frequently turns them in again 

 as soon as they reappear in spring. 



Variations. — Several beautiful examples of dark uni- 

 colored shells {fulva), with and without white lineoles, on 

 the Priory walls, Christchurch, also one at Newtown ; 

 alba, Christchurch one, Newtown one ; ornata, Christ- 

 church a few, Newtown two. 



H. rotundata. — Chuton Glen and Roeshot Hill, with Zotiites 

 excavahis ; Christchurch, abundant in gardens with Z. 

 cellarius ; Mudeford, Highcliff, Hoborne Common ; [Cad- 

 nam (J. H.A.), Holmsley, Beaulieu, Ringwood]... 



H. rupestris. — Very local and true to its usual habitat. Priory 

 wall, Christchurch ; [on the church walls and tombstones, 

 Brockenhurst (J.H.A.), on the Abbey ruins, Beaulieu]. 



H. pygmaea. — Roeshot Hill, a few; rejectamenta of R. Avon 



Christchurch, several. 

 H. pulchella. — Hengistbury, under old bricks ; Christchurch 



and Tuckton, in meadows ; Highcliff, on dry banks ; 



[Beaulieu]. I cannot find a shell absolutely free from ribs 



under a lens. 



H. lapicida. — A flourishing and pretty numerous colony, the 

 only one known to me, finds congenial conditions on the 

 Priory wall, Christchurch, with If. rupestris, H. caperata, 

 Pupa umbilicata, Clausilia rugosa... This ancient, time- 

 furrowed wall, sprinkled with vegetation {e.g., Parietaria 

 officinalis) is roughly built of limnaean limestone from 

 the Isle of Wight, Purbeck oolite, and Septaria. Two 



J.C., v., April, 1887. 



