LIMAX. 43 



L.IMAX COLUMBIANUS, GOULD. 

 PLATE LXVI. FIGURE 1. 



L. corpulentus, corpore elongate, postice carinato, SOY- 

 dide flavo, unicolore vel maculis atropurpurcis nubeculato, 

 tuberculis elongatis longituduialiter dispositis tessellato ; 

 clypeo lato, antice truncate : apertura communi postica. 



SYNONYMS AND REFERENCES. 



Limax Columbianus, GOULD, MS. of Mollusca of the U. S. Exploring 



Expedition. 



Color a dark, dirty, greenish yellow, either uniform or 

 in some varieties clouded with large, purplish-black, irreg- 

 ular blotches. The body is large and corpulent, the 

 anterior portion elevated, with the back rounded, and the 

 posterior portion strongly carinated ; at the posterior tip 

 there is apparently a mucus pore. The margin of the 

 foot extends beyond the mantle and forms a ruffle around 

 the animal, with transversely oblique markings. The 

 surface is tessellated with coarse, elongated papillae ar- 

 ranged longitudinally. The cuirass is broad, truncated 

 in front, minutely granulated with the respiratory orifice 

 at the posterior third. Face vertically wrinkled : upper 

 tentacles rather short, thickened at base, colored like 

 the body and finely granulated ; lower tentacles long 

 and slender. Length, five and one half inches. 



GEOGRAPHICAL DISTRIBUTION. This fine American 

 species was found on the western coast of North Amer- 



