164 
THE NATURALISTS’ JOURNAL. 
Aurago were at first taken for light forms of A. rufina. The 
species had evidently been out some little time when first 
discovered. Mr. Brooks informs me that as soon as Aurago falls 
into the umbrella, it rapidly ascends the sides, in order to escape. 
C. vaccinii, A. rufina and X. ferruginea were all common at the 
ivy blossom. 
Mr. G. T. Porritt, in his exceedingly interesting and useful list 
of Yorkshire lepidoptera ; published 1883, says of Aurago —“A 
great rarity,” and gives “Sheffield ” 1859 and i860, and “York,” 
the latter place on the authiorty of Stainton’s Manual, but neither 
date nor captor, are given, as the only localities in which it had 
previously been taken. Dr. Corbett records its occurrence at 
Doncaster last season. 
The Rotherham record (proving as it does, that the species is 
well established with us), is therefore of great interest to York¬ 
shire Entomologists generally, and I should here like to urge 
upon all of them, to keep a sharp look out for it next Autumn, 
especially those resident in south Yorkshire, if this be done, I 
doubt not, but that we shall hear of it during 1894 .—William 
Hewett, Howard Street, York, February 1894. 
NOTES ON THE VARIATION AND 
DISTRIBUTION OF BRITISH SLUGS. 
Bv E. W. Swanton. 
Since the Conchological Society’s publication of a census list 
in 1885, many additions have been made to the list of British 
Slugs. In the following pages the words “the Census ” will 
refer to that of the Society. * 
Family Arionidce Sub family Anonince 
Genus. Arion , Ferussac. 
Species. Arion empiricorum, F6r, 1819. 
=A. ater, Brit. i\)uctt. 
Distribution. Ninety one counties according to the Census. 
An addition is Co. 15, East Kent, I have taken it at Wychling, 
near Sittingbourne, with the varieties, Albus Fer, and Ruber, 
Moq : the former variety is rare in the district, being found only 
in the Gardens of Wychlmg Rectory. Also at Bratton St. Maur. 
Somerset, it occurs in common with the var. niger. Moq; and at 
Southampton, Hants. 
Variation. Collinge in his recent Catalogue of British Slugs 
(British Naturalist, Aug. 1892) enumerates twelve varieties. The 
actual boragei of Simroth has not, as yet, been found in this 
* Lankester’s classification is followed ; it being given in Ency. Britt ; the 
last edition; also in Zoological articles by E. Ray Lankester. 
