COLIMACEA. 31 



Shell oblong-ovate, slender, pellucid, shining, and of a bright 

 amber colour ; body very large ; spire very small, consisting 

 of three rapidly diminishing volutions, with an acute apex; 

 aperture very large, oblong-ovate, contracted above, wide and 

 rounded below, and placed very obhque ; outer lip thin, and 

 sharp at the edge. 



Variety 1, pi. IV, f. 22, 23. This elegant variety of the 

 species was found at Beaumaris, Anglesea, North Wales, by 

 my friend Thomas Glover, Esq., of Smedley Hill, Manchester. 

 It is much thicker in proportion to its size, and of a deep flesh 

 colour ; the spire is also more inflated than the ordinary spe- 

 cimens. 



This shell seldom attains the same size as the »S'. amphibia, 

 and may readily be distinguished by its very oblique aperture, 

 and in being more elongated. It inhabits the banks of ponds, 

 rivers, and streams. 



3. SUCCINEA OBLONGA, pi. IV, f. 9- 



Succinea oblonga, Drapernaud, Hist, des Moll., p. 59, pi. 3, 

 f. 24, 25; Pfeiffer, p. 68, pi. 3, f. 39; Jeffreys, Linn. Tr., XVI, 

 p. 325 and 505; Alder, Mag. Zool. and Bot., II, p. 106; John- 

 ston, Proceedings Berwickshire Nat. Hist. Club, p. 154; Brown, 

 lUust. Conch., p. 35, pi. 18, f. 21. 



Shell oval, shining, pellucid, and of a pale amber colour ; 

 body large ; spire small, consisting of three well defined volu- 

 tions, terminating in an acute apex ; aperture very large, con- 

 tracted above, and expanded and round below ; outer lip thin, 

 and acute at the edge. Length a quarter of an inch; diameter 

 not an eighth of an inch. 



Found on the margin of ditches at Bathgate, Lanarkshire, by 

 Mr. Kenyon of Preston ; at Britonferry, near Swansea, by Mr. 

 Jeffreys ; and near Berwick-upon-Tweed, by Dr. Johnston. 



Genus XIV._ACHATINA.— Lamarck. 



Shell ovate, or oblong; body large; spire short in most 

 species, but it is sometimes lengthened and elevated ; aper- 

 ture entire, longitudinal ; outer hp thin, never reflected ; inner 

 lip but slightly spread over the base of the body ; columella 

 smooth, and destitute of folds or teeth, and truncated at the 

 base. 



