50 



lu the more distant places — found near LoDdon 

 (Forbes), Newcastle (Alder), Kendal (Gough), Batb 

 (Clarke), Bristol (Miller), Wiltshire (Mbutagu) and 

 Norwich (Bridjjman). In Ireland (Thompson). On 

 the Continent, in Germany (Pfeiffer), Sweden (Nilson). 

 M. Bouchard Chautereaux informs us that its eggs, 

 for the first fortnight after ^they are laid, are phos- 

 phorescent. 



Arion rLAVDS (The Yellow Arion). Muller. 



This recently-discovered British species appears to 

 be remarkably rare, but its habits are such as would 

 prevent any but the diligent conchologist noticing it, 

 therefore it may not be so uncommon as is usually 

 supposed. 



The tentacles and head, which are short are of a 

 pale leaden colour, the tentacles being semi-transparent. 

 The sole of the foot orange-coloured, with a narrow 

 dark mark in the centre. Respiratary orifice not quite 

 on the margin of the right side of the disc. The shield 

 a lengthened oval, being small, greyish orange, and 

 having small granules, The back of the animal, which 

 is rounded, has coarse longitudinal prominences, the 

 colour a greenish straw, that portion behind the mucus 

 pore dark orange. There is a circular indent in the 

 body, immediately above the mucus gland. The mucus 

 gland is triangular in form. The tail is tapering, and 

 terminates acutely. Mucus, pale orange-coloured. 

 Length rather more than an inch. 



It appears to prefer heaps of decaying leaves, into 

 which it penetrates ; it is also found at the base of some 

 ferns, fangi, lichens, and mosses. 



It has the power of suspending itself by a mucus 

 thread, 



I quite agree with M. Bouchard Chatereaux in con- 

 sidering this very distinct from Arion Empiricorum. 



