40G 
MR. A. MAYFIELD ON NORFOLK SLUGS. 
IX. 
NOTES ON NORFOLK SLUGS. 
By Arthur Mayfield, M.C.S. 
Read 31st, January , 1893. 
Tiie great amount of attention that has lately been given by 
naturalists to the British Slug-fauna induced me to write an 
article on ‘ Norfolk Slugs,’ which appeared in the ‘ Eastern Daily 
Press.’ These further notes are written by the request of Mr. 
W. A. Nicholson, Honorary Secretary of the Norfolk and Norwich 
Naturalists’ Society. The records are, except when otherwise 
specified, the result of my own observation. 
Arion ater (L.). Abundant in damp places. Meadows near 
the Asylum at Thorpe. Meadow at Colney. Very plentiful upon a 
damp hedgebank at Horsham St. Faith’s, where many of the 
specimens approach var. brunnea Rbk. 
var. succinea. Four specimens under moss on a tree-stump 
at Costessey. 
Arion minimus, Simroth. This new slug is recorded for East 
Norfolk by Mr. W. Denison Roebuck, F.L.S. (‘Journal of Con- 
chology,’ vol. vi. p. 269). 
Arion iiortensis, For. Common, but requires careful searching 
on account of its habits. Earlham, Heigham, under moss on tree- 
stumps at Rackheatli. 
var. grisea. A single specimen with the type at Heigham. 
Amalia sowerbyi (Fer.) = (A. marginatus Jeffr.) I believe that 
this species has not been recorded for Norfolk by any one but 
myself. It may have been mistaken for L. marginatus (Midi), but 
it is easily -distinguished from that species by the shape of the 
mantle, as well as by the thicker shell. I have found it upon 
Hint walls at Kirby Bedon and Catton. 
