INSEcTs AND OTHER ANIMAL Pests InJuRtIoUS TO FrrtpD BEANS 999 
agrestis, some being almost black. It is not uncommon to find campestris 
feeding on beans, but they never occur in numbers large enough to 
seriously damage the crop. 
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The spotted garden slug, Limax maximus L. 
Limax maximus (Plate LX X, 6), is described by Taylor (1907:35) as 
follows: 
Animal with a long and slender body, tapering towards the tail, and varying in length from 
100 to 150 mill., but occasionally reaching to even 200 mill.; usually of a yellowish-grey or 
cinereous ground colour, variously banded or maculated with black, but sometimes unicolorous; 
body rounded, but keeled towards the caudal end, with about forty-eight longitudinal 
rows of elongate, detached tubercles; neck pale, with two conspicuous dorsal furrows enclos- 
ing a single row of elongate tubercles and terminating in front as the facial grooves; sole 
uniformly pale; foot-fringe pale with a row of minute submarginal blackish tubercles; tentacles 
very long and slender; shield oblong, about one-third the total length of the animal, rounded 
in front, angular behind, and forming an angle of about 80 deg. when in motion, usually of 
a similar tint to the body, but boldly marbled or maculate with black, somewhat concen- 
trically and interruptedly ridged around a sub-posterior nucleus. Mucus colourless and 
ridescent, not very adhesive...... 
Limax maximus is a large slug, of the family Limacidae, which has been 
imported into this country. It is found in the British Isles, and thruout 
Continental Europe, South Africa, and Australia. It has been in America 
for many years and may be found locally in many parts of New York State, 
where it frequents greenhouses, hedgerows, woods, and damp, shady places. 
It occurs also in and around houses occasionally, when it has been carried 
in on vegetables that are stored in the cellar. Taylor (1907) states that 
the slug is almost omnivorous, having been known to relish beans, tobacco, 
flowers of many kinds, cauliflower, fungi, custards, milk, bread, raw and 
cooked meat, fruit, and sugar. 
L. maximus has a keen sense of smell. It has been known to crawl, 
in the dark, straight to a plate of meat that was six feet away. The 
position of the plate was then changed three times, and each time the 
slug altered its course accordingly. It is said that L. maximus often re- 
turns to the same spot night after night, after its wanderings in the dark. 
The progress of the night’s journey is shown by the slime trail which 
is left wherever the animal goes. 
Arion circumscriptus Johnson 
The following description of Arion circumscriptus (Plate LXIX, 12) is 
taken from Taylor (1907: 228): 
Animal of the Arion shape, but stouter especially when contracted...... about thirty mill. 
in length when adult and fully extended; of a pale creamy-grey colour, darker grey dorsally, 
but shading to whitish towards the fringe; a black and sharply-defined lateral band extends 
the whole length of the body on each side, beneath which is sometimes an indistinct orange 
band, formed by pigment cells breaking through the skin; there is a slight mid-dorsal keel 
when young, which, however, gradually disappears during growth, but its place is almost 
