CLASSES, ORDERS, ETC. 75 



(c) Animal dark brown, slender, very glossy ; mantle very 

 tumid behind, pale yellowish-brown ; sole ash-coloured ; slime 

 almost colourless. Shell unguiform, convex above, flat beneath, 

 solid ; margin not membranaceous. Length ^ to |ths inch. Very 

 active. In damp situations. Moderately common. L. latin's. 



(d) Body rounded; compressed towards the tail, greenish-white, 

 slender; head and tentacles black; mantle y.ellowish ; slime 

 thick, orange-coloured. Shell oval, somewhat tuberculous, margin 

 broad, thin, membranaceous. Length |ths inch. Woods in Shet- 

 land and Northumberland. Local. L. tenellus. 



(c) Body varies much in colour, banded ; mantle pointed 

 behind ; dorsal tentacles short ; foot margin white ; slime colour- 

 less. Shell oval, thin, nearly flat, margin broad and membranous. 

 Length i|- to 3 inches. In woods on trees, especially the beech 

 and walnut. Somewhat local. L. {Lehmannia) arbonim^^ 



if) Body large; tentacles long, vinous-coloured j mantle buckler- 

 shaped, swollen, produced behind ; slime whitish. Shell oblong, 

 solid, convex above, concave below, margin membranaceous. 

 Length, 3 to 6 inches. Cellars, gardens, woods, fields, hedgerows. 

 Common. L. maximus^'^ 



{g) Mantle unicolorous ; pulmonary orifice margined with the 

 same colour as the ground colour of the body but of a deeper tint ; 

 keel different in colour from the rest of the body ; sole divided 



V. pitnctata, greyish-white, minutely spotted with black ; v. tristis, brownish, 

 mantle with two lateral brown bands, and sometimes a third intermediate band ; 

 V. cineracea, greyish-white, mantle ashy (type) ; v. suhmaculata, greyish-white, 

 streaked with seal-brown on the back which extends on to the posterior |rds. 

 of the mantle, the sides of the body, and anterior ^rd of the mantle are free 

 from streaks and spotted with black. 



•'^ V. maculata^ cinereous with the markings reduced to small and sharply 

 defined black spots of a rounded or elongated form, and with a continuous 

 band on each side showing a tendency to break into spots ; v. dicipiens, 

 brownish-grey, markings coalesced so as to produce the appearance of pale 

 spots on a dark grey ground, lateral bands on mantle ill-defined, no bands on 

 body, keel short, dorsal line partly obsolete. 



•*' V. obscura, brown, unicolor ; v. macitlata, ashy, mantle and back spotted 

 irregularly with black ; v. cinerea, ashy, spotless, mantle bluish-black ; v, 

 Johnstoni, ashy, mantle spotted with black, back marked with spots and two 

 bands of the same colour ; v. riifescens, reddish, unicolor ; v. fasciaia, deep ash 

 colour with whitish bands, often five in number. 



