G8 COLIMACEA. 



This interesting addition to our Fauna we owe to Mr. Bean, 

 of Scarborough. 



It inhabits woody situations in Yorkshire and Northumber- 

 land. It has also been found to be widely distributed in 

 Ireland, under decayed leaves of trees, in moss, and shady and 

 moist situations. Mr. Thompson first met with it in the Glen 

 at Holywood House, Downshire, and afterwards in many other 

 parts of the county, and also in Antrim ; it occurs in the Glen 

 of Downs, Wicklow, La Bergerie, Queen's County, by the 

 Rev. J. B. Clarke ; and at Dunscombe Wood and Ballinhassig 

 Glen, near Cork, by the Rev. T. Hincks, of Cork. 



17- Helix aculeata, pi. VII, f. 22. 



Helix aculeata, Miiller, Verm., II, p. 81 ; Drapernaud, p. 82, 

 pi. 7, f. 10, 11; Alder, Mag. Zool. and Bot., II, p. 109; lb.. 

 Trans. Newcastle Nat. Hist. Soc, I, p. 36 ; Thompson, Ann. 

 and Mag. Nat. Hist., VI, p. 25 ; Fleming, Brit. An., p. 262 ; 

 Gmelin, Linn. Syst., p. 3638; Brown, Ency. Brit., 6th Ed., VI, 

 p. 458 ; Helix spinulosa, Lightfoot, Phil. Trans., LXXVI, p. 

 166, pi. 2, f. 1 to 5; Montagu, Test. Brit., p. 424, pi. 11, f. 10; 

 Fleming, Edin. Ency., VII, p. 80 ; Turton, Man., p. 43, f. 33 ; 

 lb., Brit. Fau., p. 190; Maton and Rackett, Linn. Tr., VIII, 

 p. 201 ; Teha spinulosa, Leach, Moll., p. 100; Helix aculeata, 

 Brown, lUust. Conch., p. 47, pi. 17, f. 1 ; lb., First Ed., pi. 40, 

 f. 1. 



Shell conical, globose, thin, subpellucid, of a brownish horn- 

 colour; body large; spire small, acute, consisting of four deeply 

 divided, inflated volutions; aperture semilunated, a little longer 

 than wide, internally provided with a white rib, with a rather 

 large and deep umbilicus ; whole surface covered with an epi- 

 dermis, which rises into numerous, regular, somewhat longitudi- 

 nally oblique foliations, or striae, which rise into fine, flexible, 

 hair-like, spinous processes. Length and diameter about the 

 tenth of an inch. 



This is rather a local species, inhabiting woods and shady 

 places, under stones and leaves, &c. It has been found near 

 Bulstrode, Buckinghamshire; Lackham, Wiltshire; Kingsbridge, 

 Devonshire; Spetisbury, Dorsetshire; at Dovedale, Derbyshire; 

 and the Dean, at Twizil, Northumberland ; the Lomond Hills, 

 Fifeshire ; in the woods at Hopctoun, Linlithgowshire ; and in 



