1 82 HELICID^, 



specimen which Miiller placed in cold water seemed 

 to be but little, if at all, inconvenienced, and did not 

 leave its bath till after the expiration of three hours. 



Var. I. hyalina. — Shell greenish - white. Tawstock, near 

 Barnstaple (J. G. J.), B.C. Oban (McMurtrie) ; Llandudno, 

 North Wales (W. D. Roebuck) ; near Loch Rannoch, Perth- 

 shire (Ponsonby). 



Var. 2. lubricoides, Fer. — Shell smaller and more slender. 

 Bath (Clark) ; Church Stretton, Salop ; Clifton-Hampden, near 

 Oxford; Rawleigh, near Barnstaple; Minlough Castle, Co. 

 Galway; Dunboy, Co. Cork (J. G. J.), B.C. Wakefield (J. 

 Hebden), near Birmingham (G. Sherrifi" Tye), J.C. 



Var. 3. viridida. — Shell shaped like the last variety, but 

 greenish-white. Dunboy (J. G. J.), B.C. 



Var. if.fusca. — Shell smaller, thinner, reddish brown. Guern- 

 sey (Lukis), B.C. 



Var. 5. ovata. — Shell much smaller and oval; spire shorter. 

 Cardiff (J. G. J.), B.C. Near Birmingham (G. Sherriff Tye), 

 near Wakefield (J. Hebden), J.C. Near Ayr (McMurtrie). 



GENUS XI.—ACHA'TINA,'' LAMARCK. 



Body slender, capable of being contained within the shell ; 

 teiitades 4, with small bulbs, lower pair very short ; foot slender. 



Shell cylindrical, thin, glossy, smooth; whorls rapidly 

 enlarging ; spire produced ; mouth with a notch at its base ; 

 outer lip thin, not reflected ; uinbilicus wanting. 



Though this genus contains nearly 400 known 

 species, one only occurs in this country. 



ACHATINA ACIC'ULA,t MtJLLER. Pl. IX. 



Body slender, transparent, white, nearly colourless below, 

 with very fine granulations ; mantle thickish, with a slight 

 longitudinal ridge ; upper tentacles cylindrical, faintly granulated, 



Agate. • t A small needle. 



