VARIATION AND DISTRIBUTION OF BRITISH SLUGS. 1 65 
country, but forms very closely allied have (Review of the Arion- 
idoe, W. E. Collinge, p. 6.) 
In the recent list of land and freshwater Mollusca, issued by 
the Conchological Society—the v. reticulata Rbk, is a doubtful 
form, the v. bicolor, Rbk=v. bicolor, Moq., brunnea Rbk, is only 
a minor form of ruber, Moq, and plumbea, Rbk, a minor form of 
razoumowskii, kal. 
Arion elongatus, Collinge 1893. 
A new species. Taken with other Arions at Wainsgrove, 
Southampton, in July 1893.^ 
Externallythisslugsomewhatresemblescertainyoungformsof A. 
empiricorum, F£r, and forms of A. hortensis Fer; its structure, 
however, is very different (W. E. C.) For full description of this 
interesting species, see “Annals and Magazine of Natural History,” 
January 1894. 
Arion lusitanicus, Mabille. 
=A rufus, Morelet. 
Collinge in the Review of the British Arionidae admits this 
species as a British slug on the following grounds.— 
1. Both Simroth, and Pollonera acknowledge its right to rank 
as a good species. 
2. Forms he has examined agree with the figures and 
descriptions given by these authors. It is not given in the Conch. 
Soc. List. 
Distribution. It occurs at Bevihenen, Bantry Bay, Ireland; 
and probably will be found, ere long, in the south of England. 
Variation. Professor Cockerell in his recent “ Check list of 
the Slugs” gives six varieties ; of which ‘simrothi’ is described by 
the author: fuligineus Morel., 1845, is doubtful. 
Rufescens, Collinge 1833, has the whole of body a dark red, 
sides of body bandless. Nigrescens, Collinge 1893. Body black; 
this variety includes all black or plumbeous coloured forms. 
Olivaceus, Collinge 1893. Various shades of olive green, 
Flavo-griseus, Collinge, 1893. Yellowish grey. Foot fringe 
usually lighter than the body. It is difficult to separate some 
forms of olivaceus from this variety (W. E. C.) 
Arion flagellus, Collinge 1893. 
This new species of Arion, an intermediate form between A. 
lusitanicus, Mab ; and A. subfuscus, Drap,—was figured and 
fully described, by Mr. Collinge, in the Annals and Magazine of 
Natural History, October 1893. It was taken by Mr. R. A. 
Philips at Schull, Co. Cork. Variation. Mr. Collinge has 
described a variety Phillipsi (associated with the name of the 
finder) taken at Schull with the type. 
Mr. Collinge writes “ A. flagellus differs in a number of well- 
marked anatomical characteristics from any other known species. 
* A list of the slugs, (as observed by the author), occurring at Southampton 
was given in the Naturalist's Journal March 1894. 
