LIMN^A. 6i 



4. L. auricula'ria,* Linn£. Pl. V. 



Body of a pale brownish-grey, with a faint tinge of green, 

 thickly covered with minute black and milk-white specks, the 

 latter being rather larger and less numerous ; tentacles triangular, 

 flattish, placed widely apart, and at nearly a right angle with 

 the sides of the animal, very broad at their base, gradually 

 narrowing towards, and pointed at the tip, rather transparent, 

 pale greenish-grey, and finely powdered with a line of yellowish- 

 grey specks along the margins ; eyes moderately large, roundish, 

 black ; foot obtusely rounded in front and behind, keeled, and 

 margined with a narrow yellow band. 



Shell globosely ovate, thin, glossy, transparent, of a pale 

 amber-colour, with strongish irregular striae in the line of growth, 

 as well as with intermediate rows of very fine, close-set lines, 

 and somewhat indistinctly ridged spirally ; epidermis thin ; 

 whorls 4-5, very tumid, body whorl occupying by far the greater 

 portion of the shell ; spire very small, apex sharply pointed ; 

 suture strongly defined ; mouth very large, roundish, oval, inner 

 side slightly contracted and somewhat truncated ; outer lip very 

 thin, reflected ; inner lip somewhat thickened, and forming a 

 rather small umbilical chink or hollow ; fold considerably 

 curved, sharp. 



Inhabits slow rivers, lakes, ponds, and canals in 

 many parts of England, but it is not a common 

 species. It has been found " in a ditch at Clonooney, 

 King's County, Ireland," Brown's ' Illustrations of 

 Recent Conchology,' p. 29. In Scotland it has been 

 observed "in Abercorn Park," Forbes and Hanley, 

 vol. iv. p. 171 ; and "in Monkland Canal (Dougall)," 

 'Trans. Glasgow Natural History Society,' vol. i. p. 

 192. This is a sluggish mollusc ; it usually remains 

 at or near the bottom of the water, but sometimes 

 it floats idly on the surface ; when crawling it carries 



Ear-shaped. 



