GASTEROPODA., 3 
The shield is very long, smooth, and has the respiratory orifice very 
small, situated a little in front of the middle. The tentacles are small 
and short. 
Length, three and one-half inches. — 
Found by Dr. Charles Pickering near Discovery Harbour, Puget 
Sound. 
That this animal belongs to the genus Arion there can be little 
doubt, from the peculiar structure of the tail, as represented in Mr. 
Drayton’s figure, and from the anterior position of the respiratory 
orifice. It is a well-marked species, characterized especially by the 
little leaf-like areole by which the surface is marked. 
Figure 2, side view; 2a, papille enlarged; 2 0, dark variety. 
Limax Cotumsianus (Gould). 
L. corpulentus, corpore elongato, posticé carinato, sordidé fiavo, uni- 
colore vel maculis atropurpureis nubeculato, tuberculis elongatis longi- 
tudinaliter dispositis tessellato ; clypeo lato, anticé truncato ; apertura 
communi postica. 
Colour a dark, dirty, greenish-yellow, either uniform or in some 
varieties clouded with large, purplish-black, irregular 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 papille arranged longitudinally. ‘The corselet is 
broad, truncated in front, minutely granulated, with the respiratory 
orifice at the posterior third. Front vertically wrinkled: upper ten- 
tacles rather short, thickened at base, coloured like the body, and 
finely granulated ; lower tentacles long and slender. 
Length, five and one-half inches. 
