28 Quarterly Journal of Gonchology. 



Helix pyginaea Drapamaud. — Rather rare ; under decayed leaves 

 and in woods, but sparingly. 



Helix pulchella Midler. — In tolerable abundance throughout the 

 district. Plentiful at "West Boldon, in the county of Durham, occa- 

 sionally met -with on St. Mary's Island, near Hartley, and also on the 

 sea banks between Tynemouth and the previously-named place. More 

 plentiful, however, on a limestone soil. 



Bulimus obscurus Muller. — Only occasionally ; occurring more 

 plentifully on a limestone soil. 



Pupa ringeiis Jeffreys. — Rare ; found occasionally at Walbottle 

 Dean and Castle Eden Dean, and on the sea banks near Ryhope, also 

 sea banks near to Cullercoats. 



Pupa Timbilicata Drapamaud. — On the sea banks, frequent. Very 

 plentiful at Byer's Quarry, near Marsden, and also at West Boldon, 

 coimty of Durham. 



Pupa marginata Drapamaud. — Rare; occurs occasionally in the 

 vicinity of Sunderland and Ryhope, and other districts on the limestone 

 formation. The animal is pale, transparent grey, with two black lines 

 along the back ; in other respects agreeing with the character of the 

 genus. 



Vertigo pyginaea Drapamaud. — Under stones and on old walls, 

 generally in dry situations. Not particularly rare. 



Vertigo substriata Jeffreys. — Rare; in wet moss and in woods. 

 Occurs at Heaton Dean, Tanfield, Gibside, and Stella. 



Vertigo pusilla Muller. — Rather rare ; occurs at Tanfield and near 

 to Crowhall Mill ; generally found in damp moss in woods. 



Vertigo edentula Drapamaud. — Rather rare ; occurs at Castle 

 Eden Dean and Ryhope Dean, county of Durham. 



Balia perversa Linne. — Frequently met with in moss and on old 

 walls. Occurs in Castle Eden Dean and Ryhope Dean, both in the 

 county of Durham. 



Clausilia rugosa Drapamaud. — Not uncommon throughout the 

 district, in woods and rocky places. The variety occurs in Tanfield 

 and Castle Eden Dean. 



Clausilia rugosa var dubia Drapamaud. — Frequently occurs in the 

 district; more plentiful, however, on a limestone formation. Found at 

 Marsden and West Boldon, both in the county of Durham. 



Clausilia laminata Montagu. — In woods throughout both counties, 

 but not very plentiful. 



Cochlicopa tridens Pidteney. — Rather rare ; on mossy banks and 

 in woods. Rather local, but generally plentiful where it does occur. 

 At Scotswood and Meldon, Northumberland, and at Stella, Castle 

 Eden, and Tanfield, county of Durham. 



Cochlicopa lubrica Muller. — Common throughout the district. 



Achatina acicula Muller. — Rare. One specimen was found alive 

 in the gardens at Whitley House, also at the roots of an Ornithogalum 

 in a garden at Darlington. The shell occurs sometimes on the sands 

 at Tynemouth, probably washed from the baiaks. 



