of the District around Colchester. 96 



H. ARBUSTORUM, Linii. — Not rare, but very local. 



H. CANTIANA, Mont. — Very common, especially on the gravel. 



H. coNCiNNA, Jeftr. — Abundant on the Roman wall and 

 elsewhere, in suitable spots throughout the district. 



H. HispiDA, Linn. — Common. 



H. viRGATA, Da Costa. — Abundant on the coast at Walton 

 and Clacton, on the cliffs of London Clay. Found also 

 inland, on gravel and sandy soils, but local. At Paglesham 

 near Rochford, on clay, (but this is beyond my district), I 

 have seen the vegetation absolutely swarming with this 

 species and H. caperata. It is there very large, and many of 

 these large shells have scarcely any markings. 



H. CAPERATA, Mont. — Couimou, but local. 



H. ERicETORUM, Mlill. — I liave never found this species 

 except by the side of the brook at Marks Tey, where the 

 subsoil is boulder clay. 



H. ROTUNDATA, Mull. — Abuudaut in woods under fallen 

 timber, bark, leaves, &c. 



Var. alba. — Rare. 



H. PULCHELLA, Mull. — Not rare in damp spots in pasture 

 in all parts of the district. 



Var. costata. — I find this form on the Roman wall sur- 

 rounding the town. 



H. LAPiciDA, Linn. — I have no doubt this snail occurs in 

 the district, as I once found a dead shell at Layer de la Hay, 

 and I know it occurs at Wiston, on the Suffolk side of the 

 Stour, on a sandy subsoil. 



BuLiMUS OBSCURUS, Mtill. — Rare. I find an occasional 

 shell in the hedges. 



Pupa umbilicata, Drap. — Frequent on the Roman wall and 

 on Colchester Castle, and very rarely on trees. 



P. marginata, Drap. — About as common as the last on the 

 castle and wall ; rare elsewhere according to my experience, 

 but the Rev. Revett Sheppard says it occurs in profusion near 

 Wrabness Point, in the Stour estuary, a situation which at 

 high tides is covered wdth water. 



The above two forms are the only species of the genus 

 FujKi that I have been able to find or hear of as occurring in 



