NOTES ON BRITISH MOLLUSCAN DISTRIBUTION. 1 75 



.examination, on account of the group having been very much 

 neglected as compared with the shell-bearing species. (Parenthe- 

 tically it may be remarked that slugs should be sent alive in air- 

 tight tin boxes). 



To illustrate the limited extent to which we know the 

 distribution of slugs, it may be stated that so far the Testacellce 

 have only been reported from the following counties : — Isle of 

 Wight ; East Sussex ; Hertford ; Oxford ; West Gloucester ; 

 Worcester; Cheshire; S.E. Yorkshire; and Durham — nine 

 only. The common field-slug (Limax agrestis), which is supposed 

 to be everywhere, has so far been sent from the following 

 counties only : — South Hants. ; West Kent ; South Essex ; 

 Hertford ; Middlesex ; Bucks. ; East and West Gloucester ; 

 Hereford ; North Lincoln ; Nottingham ; Carnarvon ; Denbigh ; 

 Flint ; Anglesey ; South Lancashire ; all five divisions of York- 

 shire ; Berwickshire ; and Waterford. This leaves a balance of 

 126 counties from which specimens of this animal would be gladly 

 received. With every other species of slug, a similar state of 

 things exists, and until they have had the opportunities of 

 inspection which they desire, the projectors of the Monograph 

 will spare no pains in endeavouring to obtain specimens. 



0. Channel Isles ... .. — 6 — 6 lo 



1. Cornwall West ... ... — 4 2 6 n 



Divided from next by the highroad 

 from Truro through St. Columb to 

 the inland extremity of Padstow 

 Creek. 



2. Cornwall East... ... — i — 11 



3. Devon South ... ... — 3 — 3 5 



Divided from North Devon by the 

 watershed Hne : it commences at the 

 Tamar, about midw'ay between Tavis- 

 tock and Launceston, passes over the 

 ridge of Dartmoor, and joins the 

 Western Canal at Tiverton. 



4. Devon North ... ... — i — i 



