LIMAX. 



23 



M. Bouchard-Chantereaux ascribed to Limax brunneus of Dra- 

 parnaud, a small slug varying from an inch to an inch and a half in 

 length, living in comparative plenty in the neighbourhood of Bou- 

 logne on the banks of running streams, and in damp places among 

 moss and under stones. Dr. Johnston, of Berwick-on-Tweed, and 

 Mr. Alder, of Newcastle, observed the species also in their own 

 locality, and it is from Mr. Alder's drawing, reduced to the natural 

 size, that our figure is taken. Since the publication of these details, 

 ten years ago, by Forbes and Hanley, no further observation has 

 been recorded, and M. Moquin-Tandon includes Limax brunneus 

 in his list of ' Uncertain Species.' The question presents itself, — Is 

 L. brunneus anything more than the young of a dark variety of L. 

 agrestis ? It is said to differ from that species not only in colour, 

 but in having a transparent mucus. These differences are not of 

 much specific value, and it is doubtful whether Limax brunneus can 

 be retained as a species. 



6. Limax tenellus. Tender Limax. 



Animal ; body slender, rounder on the back, compressed towards 

 the tail, pale dull yellow, very transparent and lubricous, with 

 an obscure band on each side of the shield and back, the tenta- 

 cles being black ; shield rounded behind, covered with fine con- 

 centric wrinkles. 



Shell ; ? 



Limax tenellus, Mtiller (1774), vol. ii. p. 11. 



Hob. Northumberland (in a wood at Allansford, near Shortly Bridge) ; 

 Blacklock. South of France, Ferussac. 

 The foregoing characters, published in 1853, by Forbes and 



Hanley, are derived from a single specimen, collected in the above 



recorded locality by Mr. Blacklock, and drawn by Mr. Alder, of 



