234 POPULAR BRITISH CONCHOLOGY. 



scarcely tinted wliite^ and claims the name of A. alhus. 

 Another variety has been called A. succineus^ for its amber 

 tint. De Terussac^ unable to find differences of a specific 

 value in these variations of colour, unites them under the 

 name of Arion emjnriconmi. The border of the foot is 

 lined with yellow or orange, the shield is marbled, and the 

 back generally streaked. Although the Arion has no shell, 

 properly so called, yet calcareous rudiments may be often 

 found under the shield. Their rather large, thick-skinned, 

 yellowish, oval eggs are deposited under stones and wood 

 in the autumn. The young are of a light speckled colour. 

 The disc and body of Arion Jlavus are longer and narrower 

 than in A. emjnricorMm. A rather pretty little slug, with 

 dark stripes down the back, which is said to lay phosphores- 

 cent eggs, not very uncommon in gardens, is called Arion 

 hortensis. 



Geomalacus maculosus, found in the west of Ireland, is 

 described as " an exceedingly beautiful animal, measuring, 

 when creeping, about two inches in length ; the colour of 

 the shield and upper part of the body is black, elegantly 

 spotted with yellow ; the under surface of the foot light yel- 

 low, and divided into three nearly equal bands; the edge 

 of the foot is brown, with transverse sulci.^' There are 



