THE NATURALISTS’ JOURNAL. 
166 
The differences in the generative system are the best marked, and 
such as to at once indicate its specific identity.” 
Arion subfuscus, Drap 1801. 
Distribution. The Census records it for forty four counties. 
I have taken it at Wychling, Kent; and at Southampton it is a 
common species. Variation. Collinge enumerates five varieties 
of which brunnea, Lehm, is doubtful. At Southampton I took 
some peculiar forms, and sent some to Mr. Collinge who thought 
they greatly resembled A. cottianus, but Dr. Simroth, who saw a 
dissection wrote saying “ I think it a very developed A. subfuscus, 
richly folded in the distal copulatory portion of the oviduct.” 
Arion cottianus, Pollonera. 
An addition to the British list. 
In May 1892 I collected some Arions in a garden at Southamp¬ 
ton examples of which I forwarded to Mr Collinge who pro¬ 
nounced them to be A. cottianus, Poll.; and later this 
determination was confirmed by Dr. Scharff. 
Arion flagellus, (after Collinge). 
This slug may possibly be a common species in the south of 
England. 
Arion intermedius, Normand. 
In his Review of the Arionidae, Collinge says, “ This the 
smallest of our Arions was first identified as a British Slug by 
Dr. Scharff in 1890. Like A. empiricorum it assumes the peculiar 
arched position when at rest. Although priority rests with 
Normand as far as the actual name is concerned, Simroth was the 
first to re-establish its claim to rank as a species on anatomical 
grounds in 1885, and adds in a footnote “It is very questionable 
whether descriptions of new species omitting an account of the 
anatomy can be termed adequate, and malacologists are rightly 
refusing to recognise inadequate descriptions, or descriptions, of 
shells apart from the animal. In the Conch. Soc. List 1892, it is 
given as A. minimus Simroth. 
Distribution. Yorkshire, Oxfordshire, Derbyshire, etc. Also 
Co. Kerry, Ireland, and Connemara Co. (?), Ireland. 
Arion hortensis Fer, 1819. 
Distribution. I he Conch. Soc. list records it for seventy five 
counties. It is common at Doddington, Kent, also two varieties 
rufescens, Moq, and niger, Moq. 
