ARION. 
69 
123. t. 9. f. 6.; Sturm^ Fauna^ t. — Limax succineus. Muller^ 
Verm. 7. 203. — Limax luteus. Razoum. — Limax mar- 
ginellus. Schrank. — Arion empiricorum. Ferns. Hist. Moll, 
60. 17. t. 1,2, 3. ; Alder., Mag. Zool. and Hot. ii. 105. Leach. 
Syn. Moll. 47. t. 8. f. 1, 2. ; Forbes and Hanley^ B. M. iv, 7. 
t. D. D. D. f. 4. — Limax subfiiscus. Lister., A. Ang. t. 2. f. 
1.; Drap. H. 125. — Arion subfuscus. Ferussac. — Arion 
rufus. A. albus and subfuscus. Moq. Tandon., Moll. Franc, 
ii. 10. t. 1. f. 1 — 27. — Limax albus. Linn. S. N. i. 1081. — 
Arion albus. Feruss. Moll. i. 64. t. 2. f. 3. — Arion virescens. 
Mill. Moll. Main, 11. 1854. 
Yar. emitting a yellow mucus. — Arion flavus. Ferussac., H. 
Moll. Supp, 96. n. 7. ; Alder ^ Cat. North. 30. ; Forbes and 
Hanley., B. M. iv. 9. 287. t. FFF. f. 2. — Limax ilavus. 
Muller^ Verm. ii. 10. 
Living under damp leaves, only coming to the 
surface in damp weather. The young specimens of 
the black variety are dull brown, with yellowish 
sides. 
They vary greatly in colour, from black to brown- 
ish rufous, yellow, and yellowish white ; the keel is 
sometimes greenish ; the edge of the foot is generally 
the same colour as the back, but in some of the 
dark varieties it is scarlet or yellowish, it is always 
lined with black. Some naturalists have considered 
these varieties as species ; hence the number of 
synonyma. 
Mr. Nunneley believes that the variation of colour 
is occasioned by habitation and food, as in fields 
it is nearly always of a deep black, while in gardens, 
where the food is more various, it is found of various 
colours.” This does not agree with my experience, 
for I have found them of very various colours in 
woods, and under exactly similar circumstances, and 
at the same period. 
The calcareous particles, particularly of the red 
