ARION. BT 
It is apt to be mistaken for the young of afer, which is 
usually of a very similar colour when of the same size, 
and the resemblance is increased by the hemispherical 
form they both assume. It may be at once identified by 
its lateral bands, which a¢er is without, and by its rugosities 
which are small pointed projections arranged in sym- 
metrical rows, whereas those in azer are-very long and 
irregular. These projections are lengthened out and 
flattened somewhat when the animal is in motion. The 
foot-sole is usually overhung by the body instead of pro- 
jecting beyond it, as is the case with most species, and the 
posterior extremity of the body is rounded off and not 
pointed as in the other Azions. Mr. Beaulah, of Brigg, 
has long known this slug, and says a friend of his calls it 
the “‘Hedgehog Snail”—a happy allusion to its distinc- 
tive character. 
4, AR{ON HORTENSIS (inhabiting gardens) Aévzussac. PI. I, f. 3. 
Lody slender, grey, often with a greenish tinge, with blackish or 
purple side-bands; vagos¢tées very long; mantle granulated, with 
dark side-bands; both #zan¢le and body being darker in dorsal region ; 
foot-sole always yellow or orange; séme yellowish ; she// none, or 
rarely consisting of a few loose granules ; /egth 1 to 14 inches. 
This species is well named. It is generally, though not 
exclusively, found in gardens. 
Its range extends throughout the British Isles. Very 
young specimens much resemble Avion minimus, but the 
rugosities are sufficient to distinguish them. The yellowish 
