ARIOtf. 69 



123. t. 9. f. 6.; Sturm, Fauna, t. Limax succineus. Midler, 

 Verm. 7. 203. Limax luteus. Razoum. Limax mar- 

 ginellus. Schrank. Arion empiricorum. Ferus. Hist. Moll. 

 60. 17. t. 1,2, 3. ; Alder, Mag. Zool and Bot. ii. 105. Leach. 

 Syn. Moll. 47. t. 8. f. 1, 2. ; Forbes and Hanley, B. M. iv. 7. 

 t. D. D. D. f.4. Lirnax subfuscus. 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. 



Var. 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 flavus. 

 Miiller, 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 



