LIMAX. 133 



given to it. He particularly mentions its having a white 

 keel, as well as marginal streaks on the shield, although 

 he says it inhabits the beech, which character is more 

 applicable to L. arborum. Draparnaud doubted whether 

 his species was that of Miiller because of this difference 

 in the habitat. It is the L. Sowerbii of Ferussac and 

 L. carinatus of Risso and Leach. The shell is the 

 Limacella unguiculus of Brard. 



The shield in this species is much smaller in proportion 

 to its body than in L. gagates ; and the respiratory orifice 

 is in the last-named species placed more towards the 

 middle of the shield-area. The colouring is also dif- 

 ferent. 



B. Shield concentrically wrinkled. 

 3. L. FLA'VUS*, Linne". 



L. flavus, Linn. Syst. Nat. ed. x. i. p. 652 ; F. & H. iv. p. 19, pi. 

 E. E. E. f. 1. 



BODY slightly contracted in front, rather broad in the 

 middle, and tapering gradually to a point behind, yellowish, 

 speckled with white and black so as to form a kind of net- 

 work, covered with coarse oval tubercles : head of a bluish 

 colour : shield oblong, larger and more rounded behind, 

 elegantly grooved by concentric and rather undulating lines : 

 tentacles bluish ; the upper pair rather short, the lower ones 

 remarkably so : foot keeled towards the tail, margined with 

 yello wish- whi te ; sole milk-white : slime yellow. L. 4. B.0'75. 



SHELL obliquely oval or quadrangular, rather concave on 

 the under side, thin, crystalline and nacreous, with distinct 

 lines of growth : boss slightly projecting behind : margin 

 membranous. L. 0'3. B. 0-125. 



HABITAT : Cellars, wells, sculleries, and other damp 

 places, as well as in moist woods, everywhere. It is also 

 common in the northern and central parts of Europe. 

 * Yellow. 



