48 GASTEROPODA. LIMACID. 
Limax ater B et y, Drap. H. des M. 122. 
Var. 5. Niger, latere margineque laterali croceis, immaculatis. 
Var. e. Albidus, vel flavidus, margine laterali luteo simplici, 
aut nigro obliqué lineato. 
Limax albus, Mill. Swamp. 61; Linn. Syst. Nat. xii. 1, 
1081; Walch. Naturfor. iv. 136. tab. 1. fig. 7; Brug. 
Encycl. Méth. pl. 84. fig. 3; Bosc. H. N. des Vers, i. 80. 
Arion albus, Féruss. H. des M. 1. 64. pl. 2. fig. 3. 
Habitat in campis, ericetis nemoribusque passim ; var. € in cre- 
taceis. 
Black, sooty-black, fuscous, rufescent yellowish or whitish, 
the lateral margin of the same colour, or luteous, coccineous or 
saffron-coloured ; simple; or vertically or obliquely lineated 
with black. 
Inhabits the fields, the commons, and the woods, throughout 
Great Britam. Length four or five inches. The excrements 
generally green or brown. 
It is subject to a vast number of varieties, which have been 
described as different species by authors. 
Variety 1. Black, sooty-black, or fuscous, the lateral margin 
of the same colour. This is by far the most common appear- 
ance. The Black Slug of Pennant. 
Variety 2. Rufous, or slightly so, the lateral margin of the 
same colour. The Brown Slug of Pennant. 
Variety 3. Black or fuscous, the lateral margin coccineous, 
saffron-coloured, or luteous, vertically or obliquely lineated with 
black. 
Variety 4. Black; the sides and lateral margin, saffron- 
coloured, without spots or lines. 
Variety 5. Whitish or yellowish, the lateral margin simply 
luteous, or luteous obliquely lineated with black. This is the 
Limaz albus of Linné, Miller, and other writers. 
Head anteriorly blackish, striolated transversely, quite smooth 
between the tentacula, where it is marked with four grooved 
lines. Upper tentacula blackish tuberculated ; the tubercles 
elongated. Thoracic disc irregularly granulated. Back sculp- 
tured with elongate and intricate rugee. Sides and lower part 
of the foot smooth; latter part with transverse black lines. 
