FAMILY UMKCIDM LIMAX. 21 



distinct concentrical furrows, centering on its posterior portion. Breathing-hole on the right 

 side,* above the lower edge, and in the posterior third portion of the mantle. Vent adja- 

 cent, and slightly above and anterior to it. Upper tentacles terminating in a small bulb ; lower 

 tentacles much shorter. 



Color. Various, but most usually dark reddish or chocolate-brown, varied with numerous 

 minute blackish brown dots and lines ; the mantle somewhat darker. Occasionally the gene- 

 ral color is greyish. Tentacles darker than the general color. Foot beneath flesh-colored- 

 Breathing-hole greyish or white on its margin. 



Length r 5 - 1 ■ 7. 



Found on the underside of leaves and decayed branches lying on the ground ; also under 

 stones and boards. Their chief food appears to consist of succulent leaves. Rarely seen 

 during the day. I make no reference to names of species published by myself some years 

 since, as the descriptions have been anticipated. This species varies much in its color and 

 markings, and is invariably smaller than the following. 



LlMAX FLAVUS. 



PLATE I. FIG. 5. 



Lunax flavus. Linn. 



L. variegalu*. Lam. An. sans. vert. Vol. 3, p. 266, No. 15. 



L. flatus. Binney, Lim«cidse, Bost. Jour. Vol. 4. 



Description. Surface with long narrow prominent tubercles. Mantle short, broad, oval, 

 concentrically striated. Breathing-hole large, near the posterior part of the mantle, and cleft 

 to the edge. Neck smooth. Body terminating acutely behind, with a short ridge. 



Color, varying from deep reddish brown to light ferruginous, mottled with oblong-oval 

 greyish spots. Mantle with rounded spots. Head, neck and upper tentacles much lighter 

 than the general hue : the latter lineated with dusky at their bases. Foot greyish on the 

 margin. 



Length, 2-0-2-8. 



This species was obtained from gardens in the city of New- York. It has also been noticed 

 in Philadelphia. I have adopted the names proposed by Mr. Binney, but with much scepti- 

 cism in relation to the introduction of foreign species of this family. I have, however, had 

 no opportunity of studying the foreign species to which these have been referred. 



* Through inattention, both the figures of Ldmaccs in Plate I. are represented with the breathing-holes on the left side. 



