100 THE LAIsT) AND FRESHWATER MOLLTTSCA OF DORSETSHIRE. 



than the rest of the body; tentacles short, yellowish-grey, sharply 

 and wavily keeled towards the tail ; shield rounded in front, and 

 shortly pointed behind ; foot and margins white ; slime colourless. 

 When young, Limax arborum frequently descends from the branches 

 of trees by means of mucous threads. L.3. B.0.4. 



Shell oval, rather thin, slightly raised above with marks of lines 

 of growth, white and iridescent, flat beneath, and covered with 

 small tubercles ; nucleus nearly inconspicuous and subterminal. 

 L.0.2. B.0.125. 



Hab. Trees, especially the old and decayed, burrowing in 

 the bark, often to be seen thus when the trees have been felled 

 and lying on the ground. East Lulworth (Kendall) , Clenston 

 Wood (J.C.M.P.). 



6. L. MAXIMUS, Linn. 



Body slender, yellowish-grey, sometimes quite black, occasionally 

 with streaks or soots ot black; shield oblong, tumid, somewhat 

 pointed behind, striae distinct and regular; tentacles swollen at the 

 base and nearly joining, long, slightly conic, sub-transparent; 

 eyes not placed quite at the summit of the tentacles, but slightly at 

 the exterior side ; three distinct dorsal furrows, the median very 

 narrow, the two others rather broader, brownish-black ; foot and 

 margins white ; slime colourless. L.4.6. B.75. 



Shell square-oval, fragile, rather convex above, wnite, marked 

 with rather prominent lines of growth, obliquely striate; nucleus 

 very small, placed near one end. L.0.5. B.0.325. 



Hab. Woods, gardens, hedges, under old logs of wood. 

 Generally distributed. 



7. L. BKUNNEUS, Bouchard Chantereaux. 

 F. and H., iv. p. 20., pi. F.F.F., fig. 4. 



M. Moquin Tandon includes this species among his doubtful 

 species ; Mr. Qwyn Jeffreys regards it as a variety of L. agrestis. 

 It is smaller than the type (scarcely more than an inch in length 

 when in extension), and of a uniform brown colour. It is local, 

 but probably widely distributed. Wool (Kendall). 



FAMILY n. TESTACELLID.E. 

 TESTACELLA, Cuvier. 



The genus Testacella is intermediate between the slug and 

 the snail, differing from either in the absence of a shield, and 

 in the position of the respiratory organs, as well as of the liver 



