inhabiting the United States. 169 



LIMAX CAMPESTRIS. 



L. corpore succineo colore, cylindraceo, glandulis elevatis elongatis sub-rugo- 

 80 ; clypeo sub-antico, ovali-oblongo, lineis et suleis concentricis striato ; caud^ 

 8ub-carinata ; apertura laterali postica. 



SYNONYMIES AND REFERENCES. 



Lim£ix campestris, nobis. 



DESCRIPTION. 



Colour usually of various shades of amber, without spois 

 or markings, sometimes blackish ; head and tentacles smoky. 

 Body cylindrical, elongated, terminating in a very short cari- 

 na at its posterior extremity. Mantle oval, fleshy, but little 

 prominent, with fine concentrical lines. Back covered with 

 prominent elongated tubercles and furrows. Foot narrow, 

 whitish. Respiratory foramen on the posterior dextral margin 

 of the mantle. Body covered with a thin, watery mucus. 



Length, about one inch. 



Geographical Distribution. Inhabits all the New Eng- 

 land States, New York and Ohio, and was found in IVIissouri 

 by Prof. Adams. 



Remarks. The resemblances between some of the species 

 of this genus are so great that it is difficult to provide them 

 with distinctive characters, and it is only by close comparison 

 that their differences can be seen. The present species, al- 

 though considerably smaller, is nearly allied to Limax agrestis. 

 Its differential characters are as follows : It is always much 

 smaller, and at all ages possesses a peculiarly gelatinous or 

 semilransparent consistency. The tuberosities of the surface 

 are more prominent in proportion to their size, are not flattened 

 or plate-like, and are not separated by darker colored anasto- 

 mosing lines, the intervening furrows being of the same color 

 as the genera] surface. It does not secrete a milky mucus at 

 every part of the surface when touched. Like that species, it is 

 active in its motions, and suspends itself by a mucous thread. 



This species appears to be common to all the northern parts 

 of the United States. It is found under decaying wood in 

 the forests and in open pastures, and under stones at road-sides. 

 From its wide distribution, it would seem to be indigenous. 



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