LIMAX. 409 



backwards from their base under the edge of the mantle. Body 

 wlien in motion cylindrical, elongated, terminating acutely, the 

 sides towards its posterior extremity compressed upwards, so as 

 to form a short carina or keel ; foot very narrow. Mantle oblong- 

 oval, fleshy, convex, and prominent, rounded at both extremities ; 

 equalling in length one third of the length of the body, its surface 

 marked by prominent, irregularly waved, concentrical lines and fur- 

 rows, having their centre on the posterior part, and its edges free 

 throughout the whole circumference. Upper surface of the body 

 marked with longitudinal lines, or shallow furrows, darker than the 

 general surface, sometimes black, anastomosing with each other, and 

 forming a sort of network ; between the reticulated lines are nar- 

 row, irregular oblong plates, or smooth flattened tubercles, giving 

 the surface the appearance of mosaic work, with lines of dark ce- 

 ment ; reticulations less distinct on the sides, and disappearing 

 towards the base ; a prominent tubercular ridge extends from be- 

 tween the eye-peduncles backward to the mantle, with a furrow on 

 each side. Eye-peduncles cylindrical, about one eighth of the length 

 of the body, with small, black, ocular points on the superior part of 

 the terminal bulb ; tentacles immediately below, very short. Res- 

 piratory foramen near the posterior lateral edge of the mantle, large, 

 surrounded with a whitish border. Orifice of rectum immediately 

 adjacent, but a little above and anterior to the respiratory foramen. 

 Foot narrow ; locomotive band bounded by two distinct longitudinal 

 furrows. Generally about twenty-five mill, in length, but when fully 

 grown nearly fifty millimetres. 



It is undoubtedly of European origin, inhabiting Boston, New 

 York, Philadelphia, and other maritime cities of the Atlantic coast. 

 Also in Greenland. It is common in the neighborhood of Boston, 

 under stones at roadsides, and about stables and farm-yards, and 

 in other moist situations, under wet and decaying pieces of wood. 

 It is also found in cellars and gardens, and causes some mischief by 

 its depredations. A considerable number of individuals often con- 

 gregate in the same retreat. Their food appears to be the green 

 leaves of succulent plants, and sometimes ripe fruits ; they feed 

 during the night, and are rarely found out of their retreat in the 

 daytime. 



Limax campestris. 



Color of various shades of amber, sometimes blackish, without spots; body 

 cylindrical, elongated, terminating in a short carina; mantle oval, fleshy; foot 

 narrow, whitish. 



